rhyrlik
-
Posts
254 -
Joined
-
Last visited
Content Type
Forums
Profiles
Events
Store
Posts posted by rhyrlik
-
-
They don't have to pass the plunk test.
Cast bullets are going to fit tighter in the chamber because they are sized larger and are covered with lube. Some will have splotches of lube on the nose that will interfere with plunking. The force of the slide slamming into battery will overcome these minor fit issues. As was suggested, determine max OAL with dummy rounds and work up a load.
-
.374" is too much crimp, but not all that excessive. I set mine to .375", but measure some Win factory ammo. Talk about over crimping!
Something else is going on. Are you seating them straight? Are they bulged on one side of the case? Or is the bulge nice and even all the way around? If they are seating crooked, that could explain why some are sticky.
-
More likely an overcharge of a fast powder under a heavy bullet, like Clays under a 147. When you use a large flake powder in a powder measure, due to the way it meters, some charges are going to be too light and some too heavy. Most are going to be just right.
That's why it is better to meter by weight rather than volume whenever you are playing with a sensitive combination of components.
-
"Some guys just want to shoot and not deal with the hassle of paying strict attention to details when loading ammo."
Those people should not reload.
-
"May I ask how do figure over 50,000 psi?"
By the fact his primers are falling out.
-
Primers falling out means the casehead expanded and it has nothing to do with the firing pin or soft primers.
Old, pre-"dot FC dot" brass is soft. Use newer FC or Win brass as it is hader and stands up better to pressure.
You do realize you're running close to 50,000 PSI, don't you?
-
If your throats are .358" then you should lengthen the freebore. Get a reamer and do it yourself.
-
Right.
An easy way to measure the throat is to take a bullet and smack it with a hammer to increase the diameter, then load it in a case, and hammer it into the chamber. The throat will reduce the diameter of the part of the shank sticking out the case mouth which you can then measure.
I like to size .0005" under throat diameter. That allows easy chambering with good obturation and no leading. If your throat is .357" then using .357" bullets will result in difficult chambering. You have to allow for a little clearance. You may have to run them through a .356" sizer which will create a .3565" bullet due to alloy spring back. Only then can you establish OAL with a plunk test.
-
Is the bullet being engraved by the lands or by the freebore?
-
You need to determine throat length and diameter, then size the bullets appropriately. Then they will pass the plunk test.
-
FC factory 9mm is loaded with magnum primers. Usem.
-
The KKM 9mm chamber is very generous. Mine accepts .359" 38/357 bullets and actually needs that size to prevent leading. I normally use 125gr TC FP .359" bullets on top of 3.5grs of bullseye @ 1.040" OAL.
-
Universal Clays typically gives large ES in the 45 ACP.
Bullseye gives 20 FPS ES at the same velocity.
Try 4.6grs of Bullseye.
-
"Only leading i've ever had was with a batch of too soft bullets that I cast with the wrong alloy."
Too soft for the 45 ACP?
What is the minimum hardness for the 45 ACP?
-
I noticed a couple of statements I want to address:
One was that FCD helps with problem rounds that fail to chamber reliably. If your gun is that unreliable where a properly assembled round fails to chamber but a FCD massaged round chambers reliably, then you should first look at the gun. But the more likely culprit is you and your reloading technique. If you are loading 255gr LSWC bullets in your 45 ACP, you will bulge your case because the bullet is too long for use in an auto. The solution is not the FCD. The solution is to use another, more appropriate, combo. If you are bulging your cases with appropriate components, then you are seating the bullets crooked. Contrary to popular belief, the seater die will not straighten out a crooked misaligned bullet. It will seat the bullet crooked and cause a bulge in the case wall. Start your bullets straight. I know you want to load 1000 rounds per hour, but that yields crappy ammo.
Another was that the owner of the FCD never had any problems with lead bullets. OK, that's great. Maybe he uses thin brass and his FCD is on the loose end of tolerances. However, many people use thick brass, many times mixed headstamps, and their FCD is on the tight end. Thick brass plus tight FCD equals bullet diameter reduction and bullet setback during feeding, and leading due to a now undersized bullet.
A correctly sized case will accept a correctly sized bullet and that assembly does not to be resized in a FCD in order to function reliably.
-
1. Red Dot is fine for the 357 as long as you plan on duplicating 38 ballistics, maybe +P as well. But don't try to duplicate 357 ballistics for the reasons stated above.
2. You can use more powder with a lighter bullet because of increased case volume. The amount of useable case volume affects pressure. Given a certain powder charge, the lower the volume the higher the pressure. Since lighter bullets don't seat as deep you end up with more case volume. This allows you to use more powder while staying below max pressure. More powder means more velocity. If you don't want more velocity you can always use less powder, but your pressure will be lower. Sometimes the pressure will be too low to combust the powder efficiently and you'll end up with unburned powder in the barrel and a lot of soot. For example, you don't want to use 2400 in a 38 Special because the low pressures will not allow the powder to combust efficiently.
-
I went out and shot it again today. I tried 231 powder with WSP primers and they pierced. I also tried FC-200 and CCI-500 primers with Bullseye and they did not pierce. I think the piercing issue is a combination of the heavy hammer blow and the pressure curve of the load. WSP does not pierce with slower burning powders like AA#7 or WSF, but these don't deliver the same accuracy as Bullseye or 231 in this rifle.
Thanks for the feedback.
-
Hi:
I built a 9mm 16" barrel AR a couple of weeks ago and been trying different loads. I noticed that with 4grs of Bullseye and 125 grain Zero JHP (#162) bullets it pierces primers. I found a vague reference that fast burning powders are a no no in long AR barrels. I don't understand the reason. My 4 gr load is nowhere near max. It has an OAL of 1.135". It uses WSP primers. It works in my pistols without any issues.
Please explain this cuz the load shoots four times more accurate than factory WWB and I wanna keep using it.
Thanks for any help.
-
I've been able to get 1" 10-shot groups at 15 yards from my Glock using Xtreme 125gr FP .357" revolver bullets and mixed brass and reclaimed primers!
125gr Xtreme FP .357"
3.7grs Bullseye
1.050" OAL
I'm usually anal and sort brass by head stamp. But this time I needed to use up all my left over mixed brass and pulled primers for a desert blasting session where noise was more important than accuracy. I bought a box of these thinking I could use them in my revolvers too. So I quickly worked up a load just to cycle the Glock. It turned out to be a pretty decent load.
-
Try 1.050" OAL.
9mm's prefer a short OAL with a TC profile bullet.
-
If they are underpowered at 1.1" then they will only get weaker the longer you load them. Try 1.050" OAL.
-
Is this maybe a headspace issue? I admit I'm stumped by this and now having someone have this same problem with standard pistol primers just adds to the mystery. In some thread here, or elsewhere, someone suggested that headspace might be behind this. Under this hypothesis, excessive headspace allows the primer to back out of the case far enough to allow gas to escape around the primer before the case is pushed back by the pressure to re-seat the primer. I thought it was an interesting if not downright elegant explanation.
Bluemooncricket, could you maybe take a look to see if you have too much headspace? Don't ask me how to do this, except maybe drop loaded rounds in the chamber and see how far the base is from the breech face / end of the barrel hood.
For what you say to happen, the headspace would have to be .100"
-
OAL affects accuracy and point of impact. When working up a load, vary the OAL. FMJ RN bullets can be seated anywhere from 1.169" to 1.100".
I found best accuracy in the 9mm with blunt RNFP or TC bullets seated very short, in the 1.050" range.
-
I have the GRX and its stupid easy. Better yet, it detects incipient casehead seperation.
Powerpistol for 9mm
in 9mm/38 Caliber
Posted
Power Pistol was designed for 9mm NATO. It is stupid proof.