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bigedp51

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Everything posted by bigedp51

  1. If you look at the OPs left and center cases in his photo the base diameter above the extractor groove is much larger than the inside diameter of the sizing die. If these cases were sized with a standard die then a undersize die would make this look much worse. What is the base diameter measurment just above the extractor groove on these cases? If its over .3910 then my guess is the case bulged due to high pressure, or the inside diameter of your die is on the small side.
  2. Make sure you clean the bolt of your SKS, I had one that went full auto. It has a floating firing pin and dirt, a sliver of brass etc and cause it to go full auto. This means compleatly disembling the bolt and removing the firing pin and cleaning.
  3. CHOOSING THE RIGHT PRIMER - A PRIMER ON PRIMERS http://www.sksboards.com/smf/index.php?topic=56422.0 Small Handgun Standard .017" cup thickness CCI 500Federal 100 - Has a soft cup - good to use if hammer strike is light.Federal 100M - Match version of aboveMagtech PR-SPMagtech PR-SPC - Lead-free "Clean Range" primer for indoor ranges etc. Remington 1 ½RWS 4031Winchester WSPWolf/Tula Small Pistol SP #KVB-9 - brass cup - "For Standard Pistol loads"Wolf/Tula Small Pistol #KVB-9SP - "For 9×19 NATO cartridges"Wolf/Tula Small Pistol #KVB-9S - "For Sporting Pistol loads" Small Rifle StandardCCI 400 -thin .020" cup, not recommended for AR15 use by CCI/Speer. Good for .22 Hornet, .30 Carbine. See Note 1 at the bottom of the page NOTE 1: According to Speer/CCI Technical Services - Both the CCI 550 Small Pistol Magnum and CCI 400 Small Rifle primers are identical in size. Both primers use the same cup metal and share the same cup thickness. Both primers use the same primer compound formula and same amount of primer compound. They can be used interchangeably. The image below shows cup thickness, the thicker .025 cups will be harder to set off.
  4. If you use a .310 flat base bullet with a lead core, when fired and kicked in the seat of the pants the bullet should expand and fill the bore. Many old .303 British Enfield rifles had bores as large as .317 and flat base .312 bullets would work just fine.
  5. If you are not loading "HOT" you could try using small pistol magnum primers. For the AR15 it is recommended to use primers with a cup thickness of .025 to help prevent slam fires. "BUT" many reloaders use the CCI 400 primers without ill effect. CHOOSING THE RIGHT PRIMER - A PRIMER ON PRIMERS http://www.sksboards.com/smf/index.php?topic=56422.0 CCI 400 -thin .020" cup, not recommended for AR15 use by CCI/Speer. Good for .22 Hornet, .30 Carbine. See Note 1 at the bottom of the page NOTE 1: According to Speer/CCI Technical Services - Both the CCI 550 Small Pistol Magnum and CCI 400 Small Rifle primers are identical in size. Both primers use the same cup metal and share the same cup thickness. Both primers use the same primer compound formula and same amount of primer compound. They can be used interchangeably.
  6. RGA I got the least neck runout using Forster full length dies, and the Lee collet die were OK but I saw no sense in sizing the case twice. Meaning using a Redding body die and a Lee collet die when I got the same results with the Forster die and sizing the case once. As a side note I got the most neck runout using bushing dies. And I believe this is due to the amount the neck must be reduced in diameter in SAAMI chambers. Bushing dies work best in custom tight neck chambers with neck turned brass. Below the Forster full length dies have a high mounted floating expander. And the case neck is held and centered in the neck of the die when the expander enters the case neck. This means the expander can not pull the neck off center and induce neck runout and the Forster die produces very concentric cases.
  7. Below is for the .308/7.62 and Forster dies, small base dies reduce the case body diameter approimatly .003, and not just the very base of the case. I would not use a bushing die for a AR15 rifle with larger military chambers. The more the neck is reduced in diameter the greater the chance of inducing neck runout. On top of this the Redding bushing die FAQ tells you if the neck thickness varies .002 or more to use a bushing a few thousandths smaller and use the expander to set the inside neck diameter. Read the links below on bushing dies Tech Line & Tips (FAQs) https://www.redding-reloading.com/tech-line-a-tips-faqs Bushing dies work best with custom tight neck chambers with neck turned brass. All my full length Forster dies produce less neck runout than my bushing dies in standard SAAMI chambers. Below just a few of the .223 dies I have used and tested. In the video below by the 6.5 Guys they tell you they get less neck runout with Forster dies vs Redding bushing dies. Save $$ By Using Lake City 5.56x45mm Once-Fired GI Brass http://bulletin.accurateshooter.com/2019/10/save-by-using-lake-city-5-56x45mm-once-fired-gi-brass/ Accuracy Potential of Mil-Surp 5.56×45 Brass So, how accurate can previously-fired GI surplus brass be in a good National Match AR-15? Well, here’s a data point from many years ago that might be of interest. A High Power shooter who wrote for the late Precision Shooting magazine took a Bill Wylde-built AR match rifle to a registered Benchrest match. His first 5-round group ever fired in a BR match was officially measured at 0.231″ at 200 hundred yards. This was fired in front of witnesses, while using a moving target backer that confirmed all five rounds were fired. He recounted that his ammo was loaded progressively with factory 52gr match bullets and a spherical powder using mixed years of LC brass with no special preparation whatsoever. Obviously, this was “exceptional”. However, he had no difficulty obtaining consistent 0.5-0.6 MOA accuracy at 200 yards using LC brass and a generic “practice” load that was not tuned to his rifle.
  8. In a semi-auto rifle the resized case body should be .003 to .005 smaller in diameter than its fired diameter. This allows the case to spring back from the chamber walls and extract reliably. So measure your fired and resized cases to determine if they are being reduced enough in diameter. Dies and chamber vary in size and the amount of brass spring back can vary also. NOTE, I buy bulk once fired Lake City brass and size it the first time with a small base die. Thereafter my standard Forster .223 die works for my AR-15 rifle, BUT a standard die "might" not work for your rifle. Example I have a standard Lee .223 die that will size the case body smaller than my RCBS small base die.
  9. It also looks like the die is "pushing brass" near the base where your red arrow is. Some guesses on the pushing brass, and the ring on the base. 1. Case off center with the die, meaning the case not centered in the shell holder. 2. Check for a bulge if you are using range pickup brass. 3. The brass is too clean and being grabbed by the carbide ring. Try some Hornady one shot on the cases and inside the die. 4. A undersize die will push even more brass because of it smaller diameter.
  10. The vast majority of rifle case gauges do not check case body diameter. Meaning they just check cartridge headspace and case length. Below are a Wilson, Dillon and JP Enterprise .223/5.56 case gauges with the case placed in base first. This shows that the JP Enterprise gauge is smaller in diameter. I use the JP Enterprise after sizing the case and again to check the loaded rounds. Bottom line if the case fits in the JP Enterprize gauge it will chamber in any rifle. I also use a Hornady gauge below to check the cartridge headspace and set the die up for the proper shoulder bump. Another example with .308 gauges, below a "FIRED" Lake City 7.62 case in a Wilson gauge. And now the same "FIRED" case in a JP Enterprise gauge showing its smaller diameter. A resized case should be .003 to .005 smaller in diameter than its fired diameter. This allows the case to spring back from the chamber walls and extract reliably in a semi-auto rifle. And this is the primary reason I use the JP Enterprise gauges to ensure they chamber and extract reliably.
  11. The U.S. Army Marksmanship Unit uses Hornady OneShot a "dry film" lube and it does not need to be removed. Read the link below. Slick Tricks: Techniques and Tools for Big-Batch Case Lubrication https://bulletin.accurateshooter.com/2018/09/slick-tricks-techniques-and-tools-for-big-batch-case-lubrication/ Any type "wet" lubes should be removed because it increases bolt thrust.
  12. The more the case is resized and reloaded the more work hardened the brass becomes. This causes more brass spring back after sizing and less bullet grip. The undersize dies reduce the case diameter more to counteract brass spring back and less bullet grip. Below is a 9mm cartridge sized with a under size die and the case is wasp waisted that increases bullet grip. (this is good) Two things pistol shooters never do, trim their cases and anneal their cases to make the brass softer. So use the under size die and "Get a grip".
  13. CHOOSING THE RIGHT PRIMER - A PRIMER ON PRIMERS http://www.sksboards.com/smf/index.php?topic=56422.0 Small Handgun Standard .017" cup thickness Small Handgun Magnum .017" cup thicknessCCI 550 See Note 1 at the bottom of page NOTE 1: According to Speer/CCI Technical Services - Both the CCI 550 Small Pistol Magnum and CCI 400 Small Rifle primers are identical in size. Both primers use the same cup metal and share the same cup thickness. Both primers use the same primer compound formula and same amount of primer compound. They can be used interchangeably. Small Rifle StandardCCI 400 -thin .020" cup, not recommended for AR15 use by CCI/Speer. Good for .22 Hornet, .30 Carbine. See Note 1 at the bottom of the pageCCI BR4 - match primer with a thicker .025" cup. Federal 205 - Mil-Spec cup thickness according to Federal - okay for 5.56mm. .0225" cup thickness.Federal 205M - same as the 205 but the match version.Magtech PR-SR - .025" cup thickness (not much feedback yet on this new primer as to AR15 suitability but with the same cup thickness as the Rem 7 1/2 it looks good so far) Remington 6 ½ - thin .020" cup, intended for older, lower pressure rounds Remington says do not use for the .223 Rem or other similar pressure rounds. Good for .22 Hornet, .30 Carbine.Remington 7 ½ BR - A match or "bench rest" primer. Lyman & Nosler classify this primer as a Standard. Remington says the compound is the same as the 6 1/2 but with a thicker .025" cup.RWS 4033Winchester WSR - some piercing issues noted when changed from silver to brass cup. Cup thickness is a bit thinner at .021". Most say they are good to go for the AR15 despite that, probably because of the hardness of the cup. Some feel they are less resistant to higher pressures.Wolf/Tula Small Rifle SR #KVB-223 - soft, sensitive copper cup, not recommended for AR15/military rifle use or high pressure rounds.
  14. I buy bulk once fired Lake city brass and size it the first time with a small base die. This brings the cases back to minimum dimentions and be able to be fired in any chamber. Once fired in my AR15 and bolt action rifles I use a standard Forster full length die. Bottom line if you are resizing range pickup brass and reloading for more than rifle then a small base die would be my choice. And if you are reloading for one rifle with cases only fired in your one rifle a standard full length die should be fine.
  15. A type "M" expander allows the bullet to start straight into the case. And if the seater plug does not fit the shape of the bullet it can cause the buller to be pushed into the case at a angle. Redding now makes their expanders the same as the Lyman type "M" expanders.
  16. During the 1968 Congressional hearings on the M16 rifle jamming problems, one of the problems was soft brass. The military hardness requirements were increased at Lake City and commercial contracts for the military. The case pictured in the OPs post was either loaded too hot or had soft brass and the base of the case expanded beyond its elastic limits. NOTE, to keep it simple I buy once fired bulk Lake City 5.56 brass for my AR15 rifles. These cases have the hardest brass and are above average in quality and uniformity. SIMPLE TRICK FOR MONITORING PRESSURE OF YOUR RIFLE RELOADS http://www.hodgdonreloading.com/reloading-education/tips-and-tricks/simple-trick-monitoring-pressure-your-rifle-reloads "One of the first rules of handloading is to always follow the approved reload data. The cautious reloader gradually works up to approved maximum loads to ensure his particular gun does not show pressure signs. Generally this is visual observation of the fired shell case head and primer. There is another slick way to check for pressure signs if you are interested. Using a blade micrometer that measures in ten thousandths (.0001"), new, unfired cases can be gauged before and after firing to determine reasonably accurate maximum loads. Micrometers measuring in thousandths (.001") are insufficiently accurate to perform these measurements, and should not be used. Previously fired cases cannot be used accurately due to various levels of brass hardening. Measurement is taken just ahead of the extractor groove on the case head and must be taken at the same place on the case before and after firing. By placing a small mark on the case head – entering the cartridge in the chamber with mark at 12 o’clock – a consistently accurate measurement can be taken with each firing. Lower pressure rounds, like the .30-30 Winchester, usually yield maximum pressures at .0003"-.0004" expansion. Modern cartridges, like the .223 Remington, will show maximum pressure at .0004"-.0005", while .308 Winchester, .270 Winchester, etc., typically yield .0005"-.0006" expansion at max pressure. Magnums, like the .300 Winchester Magnum, show maximums at .0006”-.0007” expansion, and should be measured on the belt. In conjunction with these measurements, case head signs of pressure should be monitored as well. These signs include very flat primers, slightly cratered primers, ejector marks on the case head, and stiff extraction. All these case head signs indicate high pressure, and loads should be reduced until these signs disappear. As always, start with the beginning load listed, and cautiously work up to the maximum shown for that set of components, using the methods listed herein."
  17. The JP Enterprise case gauge is smaller in diameter and closer to minimum SAAMI body diameter. Below a Wilson, Dillon and JP Enterprise .223 case gauges, I have placed the cases base end first into the gauges to show how much smaller in diameter the JP Enterprise gauge is. In a semi-auto the case body diameter after full length resizing should be .003 to .005 "SMALLER" than its fired diameter. This allows the case to spring back from the chamber walls when fired and extract reliably. If your resized cases will not drop all the way into the JP Enterprise gauge it means the die is not reducing the case body diameter enough. If you are using once fired or range pickup brass you might be dealing with brass spring back after sizing. Meaning the case was fired in another chamber and you might need a small base die to reduce the body diameter more. NOTE, I'm loading for three AR15 rifles and use bulk once fired Lake City brass and size them the first time with a small base die. This brings the case back to minimum SAAMI diamentions and allows the case to chamber in any .223/5.56 rifle. No matter what type full length die is used the case springs back larger after sizing. And the bigest problem comes from cases fired in another chamber and the die not reducing the case body diameter enough. I check the resized cases with the JP Enterprise and again performing a plop test with my loaded rounds. If the resized case fits the gauge but a loaded round does not, normally the case neck is bulged because the seating die is not setup properly. Meaning seating and crimping in the same operation and creating a bulging crimp. Below another example using .308/7.62 case gauges. Below a "FIRED" Lake City case in a Dillon case gauge, and the case body diameter is preventing the case from dropping all the way into the gauge. Below the same "FIRED" case in a JP Enterprise gauge and showing its smaller diameter. So remember if the case fits in the JP Enterprise gauge it will chamber in any .223/5.56 rifle because it is closer to minimum SAAMI case body diameter. Bottom line, my guess is your problem is brass spring back after sizing or a bulging crimp. Meaning you may need a small base die and seat and crimp in seperate operations. I would color the compleat cartridge with a black felt tip marker and see if you have any marks when chambering a round in your rifle. Then again dropping a loaded cartridge in your JP Enterprise gauge. Below three types of Forster .308 dies.
  18. With Quickload you need a chronograph and measure the velocity of your ammunition. You then adjust the powder burn rate in Quickload until the velocity matches your chronograph. Quickload defaults to the lowest case capacity for a given cartridge and this increases the chamber pressure. Meaning their is a lot of adjusting and tweaking that needs to be done to Quickload to get it to spit out a close computer generated guesstimate. And without any tweaking of Quickload and at its default settings its output data is not even close to the reloading manuals. Example, with .223/5.56 cases Quickload will default to 28.0 case capacity and my Lake City 5.56 cases have 30.6 case capacity. And with the same load of 25.0 grains of H335 the default capacity of 28.0 will read 5,000 psi higher than the Lake City cases.
  19. The more a case is reloaded the harder the brass becomes and springs back more after sizing. The Lee under size die will size the case .002 to .003 smaller in diameter to compensate for brass spring back. And if using range pickup brass the Lee and EGW undersize dies are added insurance to prevent bullet setback. Below a 9mm cartridge resized with a Lee undersize die, the case is wasp waisted and showing the increased bullet grip.
  20. The more a case is reloaded the harder the brass becomes and it springs back more after resizing. The Lee and EGW undersize dies will size the case .002 to .003 smaller in diameter and reduce brass spring back and increase bullet grip. Below is a 9mm cartridge that was resized with a Lee undersize die and the case is wasp waisted. This will increase bullet grip on range pickup brass and prevent bullet setback. Below the new Redding pistol dies now have a Lyman type "M" expanders that will aid in straight inline seating and prevents the bullet from tipping during seating. The above message was brought to you by "Society for the Prevention of Cruelty to Pistol Brass"
  21. Small pistol primers have a cup thickness of .017 to .020 and small rifle primers have a cup thickness of .020 to .025. Read the link below CHOOSING THE RIGHT PRIMER - A PRIMER ON PRIMERS http://www.sksboards.com/smf/index.php?topic=56422.0 Small Rifle StandardCCI 400 -thin .020" cup, not recommended for AR15 use by CCI/Speer. Good for .22 Hornet, .30 Carbine. See Note 1 at the bottom of the page NOTE 1: According to Speer/CCI Technical Services - Both the CCI 550 Small Pistol Magnum and CCI 400 Small Rifle primers are identical in size. Both primers use the same cup metal and share the same cup thickness. Both primers use the same primer compound formula and same amount of primer compound. They can be used interchangeably. Below you can see the small rifle primers with the thinner cup thickness.
  22. Best answer above! This man must be almost as smart, good looking and modest as I am.
  23. FYI, Remington ran Lake City from 1941 to 1982 and used their 7 1/2 primers in all the 5.56 ammunition. And the greatest chance of a slam fire in a AR15 type rifle is if a single round is loaded without the magazine in the rifle. When the rifle is feeding from the magazine the bolt velocity is slowed down and the free floating firing pin has less inertia. During the trials period both the M14 and M16 had the firing pins lightened to prevent slam fires. And any primer with a .025 cup thickness is all that is needed for safe operation of your AR15 rifle. Meaning millions of rounds were fired by the military in the M16 rifle with the Remington 7 1/2 primer without slam fire problems.
  24. Before anyone recommends the CCI 400 primers for the AR15 rifle read the link below. CHOOSING THE RIGHT PRIMER - A PRIMER ON PRIMERS http://www.sksboards.com/smf/index.php?topic=56422.0 Small Rifle Standard CCI 400 -thin .020" cup, not recommended for AR15 use by CCI/Speer. Good for .22 Hornet, .30 Carbine. See Note 1 at the bottom of the page CCI BR4 - match primer with a thicker .025" cup. Federal 205 - Mil-Spec cup thickness according to Federal - okay for 5.56mm. .0225" cup thickness. Federal 205M - same as the 205 but the match version. Magtech PR-SR - .025" cup thickness (not much feedback yet on this new primer as to AR15 suitability but with the same cup thickness as the Rem 7 1/2 it looks good so far) Remington 6 ½ - thin .020" cup, intended for older, lower pressure rounds Remington says do not use for the .223 Rem or other similar pressure rounds. Good for .22 Hornet, .30 Carbine. Remington 7 ½ BR - A match or "bench rest" primer. Lyman & Nosler classify this primer as a Standard. Remington says the compound is the same as the 6 1/2 but with a thicker .025" cup. RWS 4033 Winchester WSR - some piercing issues noted when changed from silver to brass cup. Cup thickness is a bit thinner at .021". Most say they are good to go for the AR15 despite that, probably because of the hardness of the cup. Some feel they are less resistant to higher pressures. Wolf/Tula Small Rifle SR #KVB-223 - soft, sensitive copper cup, not recommended for AR15/military rifle use or high pressure rounds. Small Rifle Magnum CCI 450 - same thicker .025" cup as the BR4 and #41. CCI #41 - commercial version of the fully-qualified DOD primer for use in U.S. military ammo. With this primer there is more 'distance' between the tip of the anvil and the bottom of the cup than with other CCI SR primers. .025" thick cup. Same primer mix as CCI 450. Remington 7 ½ BR - A match or "bench rest" primer. Hornady, Handloads.com, and Chuck Hawks classify this primer as a Magnum, differing from other sources that classify it as a Standard. .025" cup thickness. Wolf/Tula Small Rifle Magnum SRM - hard, less sensitive brass cup intended for AR15/military rifle and high pressure rounds - #KVВ-5,56M. Wolf/Tula Small Rifle 223 SR223 - #KVB-223M "This is the newest primer available in the Wolf line. It is ever so slightly hotter than the small rifle magnum primer and it comes with a brass colored thick cup. This primer can be used in place of the SRM primer or used when a different powder is used that is hard to ignite." NOTE 1: According to Speer/CCI Technical Services - Both the CCI 550 Small Pistol Magnum and CCI 400 Small Rifle primers are identical in size. Both primers use the same cup metal and share the same cup thickness. Both primers use the same primer compound formula and same amount of primer compound. They can be used interchangeably.
  25. The pattent for the Lyman type "M" expander expired and Redding pistol dies now have the type "M" expander. The expander is Titanium Nitride coated and slicker than snot on a door knob. Example below a .223 Lyman type "M" expander, normally with a jacketed bullet you just bump the case mouth onto the .226 section of the expander. This only opens the case mouth slightly larger than bullet diameter and also aids in straight inline seating.
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