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Tango

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Posts posted by Tango

  1. On 11/21/2020 at 4:20 PM, konkapot said:

    Mixed feelings. 

     

    It seems that a some shooters want to take the easy route. 

     

    They don't want to aim. Or plan reloads. Or do basic stage breakdown. Or draw from a holster. In trying to make it "Easier" they end up missing out on what makes this sport what it is. 

     

    Production includes everything this sport is about. 

    nice one :)

  2. I had a blood test during a time when I was shooting a lot, both indoors and outdoors. I was not not reloading or handling spent brass, though.

     

    Lead levels were undetectable. My habits were: never touch face or food when shooting, wash hands and face immediately after shooting, and take a cool shower and change clothes when I arrive at home.

     

    So, it is certainly possible to eliminate lead exposure if you are just a shooter. Reloading is a different issue.

     

     

     

  3. On 6/25/2021 at 4:09 PM, Umbrarian said:

    No, recoil is Force (F=ma), not momentum (p=mv).

     

    Unless you are shooting a revolver, what you feel is also a result of the Recoil Spring absorbing energy.

     

    Supersonic bullets do not create more blast. 115 seem to have more blast over 147 as more powder is used.

    No, recoil is momentum. No, supersonic bullets create a supersonic shock wave, subsonics don't do that. I agree though, generally the total energy (i.e. powder) is a better measure of "felt recoil". 

  4. 1 hour ago, GBertolet said:

    The muzzle energies of 115 gr bullet and the 147 bullet are not even close when loaded to the same power factor. The foot pounds of energy are considerably less with the heavier bullet, even though the power factors are the same. Pick any caliber, and bullet weights to compare, and compute what velocity is needed to make power factor. Go to a ballistics chart, and see what the energy is for those bullet weights, and compare. The heavier bullets are less powerful, energy wise. This will explain why heavier bullets recoil less. You get to choose your poison. Heavy bullets=slower cycling, and light bullets= faster cycling.  In revolvers, the heavier bullets really shine, as there is no sluggish reciprocating slide.

    "Pick any caliber, and bullet weights to compare, and compute " 

     

    That is exactly what i did in the OP :)

  5. 13 hours ago, Guy Neill said:

    Power factor is a momentum value.

     

    Definitely, if you are shooting the bullets at the same velocity, the heavier will recoil more.  However, you are normally shooting the bullets at the same power factor so that the recoil is the same.

     

    The heavier bullet, going slower for a given power factor, will take longer to exit the barrel (though not by much), so the recoil is delivered over a longer period of time.

     

    Most will not likely notice the time difference.  The choice comes down to what feels best to the shooter, delivering quicker follow-up shots and accuracy.

     

    Other factors include the moment arm and the amount of powder.

     

    Since the powder charge plays a part in recoil, and the heavier bullets normally use less to make a power factor, the resultant feel is different since the force on the gun changes.

     

    As an example, taking some charge weights from one of the reloading manuals, we have, for 9mm,

     

    Bullet          Velocity          Charge          Recoil          Force      PF

    115               1130               5.2                 2.52            6.4          130

    124               1048              4.9                 2.47            5.9          130

    147                 884              4.0                 2.34            5.6          130

     

    so, do you agree with my assessment that the so called "perceived recoil" is actually supersonic blast of the lighter 9mm bullets?

  6. When I was a beginner and shooting only factory ammo, I was told to stay away from lighter bullet weights like 115gr, and use 147gr because heavier rounds would recoil lighter. My experience confirmed this: 147gr rounds felt better and easier to control. Physics, however, tells us that recoil is momentum, and a heavier bullet at the same speed would generate larger recoil. So I compared momentum of a typical factory ammo like Speer lawman, at 115 and 147 grains. Based on factory specs, the momentum of the 147gr is actually larger than the 115gr, but by only about 5%. I do not think anybody can notice this difference in their hand, but even if they do, the heavier bullet should recoil more. This is contrary to what people feel. What I believe happens is that because the 115 grain bullet is actually supersonic, it creates blast that makes it feel more "snappy" vs. 147 grain is subsonic and doesnt create the same shock wave and the perceived snappiness. 

  7. I twice had dead triggers with p320 line pistols; one time due to the tiny little springs under the sear breaking or coming loose, the other time the striker "hook" that engages the sear completely shearing off....i have several sigs and like them but the p320 line is not the most reliable pistols out there

  8. Once I compared my accuracy in bullseye shooting when target focused vs. front sight focused. I did not see much of a difference in 25 meter 5 shot groups. Perhaps front sight focus is a bit more accurate, but I think the difference would be negligible for action shooting. I think you can be 100% target focussed, with fuzzy front and rear sights, and still get your hits, provided that you are aware what is happening to the sights as you pull the trigger.

  9. On 5/31/2021 at 4:05 PM, rpm8300 said:

    FWIW - I'm in law enforcement and most engagement are 7 yds and in, and quite a few are in lower light situations; for anything personal defense I would train on night sights; having the dot is good but in high stress situations, you can bring a gun up and not see a dot; it will take you a second to hunt and find it.

    At those distances you can pretty much point it and press the trigger, or use the window of the dot as a reference, and you will hit. I still struggle from time to time finding the dot when I am at awkward positions, but it is never a full second delay. When I lose the dot it is always high, so it just requires a quick downward adjustment.

  10. 21 hours ago, Bowman said:

    I shoot CO in USPSA but carry an iron sighted Glock.  I feel more confidence in iron sights for EDC, as I have had dots suddenly go out a couple of times in practice.  I do shoot some other matches using iron sights so I still get practice shooting that way.

    Same here. I am a dot shooter in competition but have seen many dots that fail and broke so I prefer irons for serious use, for now. When they become very robust and easier to install (and when my eye sight deteriorates), I will switch.

  11. On 5/29/2021 at 3:41 PM, SGT_Schultz said:

     

    My experience, and that of most who I know, doesn't track with his.

     

    Same here. I think the dot is better and easier for a beginner, for intermediate shooter, and for an advanced shooter. But, it is particularly better/preferable for a beginner. Which is exactly the opposite of what he says.

  12. On 5/13/2021 at 6:22 AM, jejb said:

    I have a non-Legion X5. Been a great gun I bought new a couple of years ago, before the Legion version hit the scene. Very accurate and fun to shoot. But I bought a CZ Shadow 2 Orange a few months ago and have been shooting it almost exclusively since. I shoot at least weekly. Decided to take the X5 to the range the other day and found out pretty quickly that I'm now spoiled by the trigger on the S2. I used to think the trigger on the X5 was very good. And it is for a stock striker fired gun. But wondering what options are available to get it closer to the S2? I know it will likely never be the same as the S2, but I am hoping I can get it closer. I've put trigger kits in several guns, so I'd go that route if it's a good one. But I'm also willing to have pro work done, if that is the best way to go.

    GrayGuns trigger is excellent. Installing it yourself is tricky, but doable. There used to be good videos on how to install, which would save you a lot of headache.

  13. 1 hour ago, AverageJoeShooting said:

    exactly why i shoot open 

    to separate myself from the paupers :D:D

     

    totally kidding of course, i think now a days the only advantage for open is major scoring

    comp? single action trigger? open holsters? non-moving optic?  

  14. On 11/16/2020 at 4:13 PM, tjmitchem said:

    Mark built an absolutely beautiful carry gun for me.  Shoots like a dream.

     

    IMG_0339.JPG.abed5751709291b5dc79a2c1166a63a1.JPG

    IMG_0332.JPG

    Nice gun. How does the grip texture feel on your skin?  

  15. 5 hours ago, SGT_Schultz said:

    Need to accept the wobble.  It's there with irons too, you just can't see so much of it.

    For me, the dot covers too much for precision shooting. Nothing beats all black target sights and a 6 o'clock hold on a circular target. Extreme precision, because you are aligning a straight line (front post) and an arc (target), which intersect in a single point.

  16. 5 hours ago, SGT_Schultz said:

     

    It depends on your shot call.  If you are absolutely sure the shot broke when the sights were exactly on point of aim, then yes one shot is all it takes.

     

    Personally, I cannot zero a pistol with iron sights in one shot.  Occasionally I can do it with a pistol equipped with a red dot sight.  A scoped rifle fired from a bipod, pretty much every single time.

    I can do much better precision shooting with irons than the dot, but it has to be nice thin target style sights not the combat style thick ones. I agree that if you are certain of your shot calling, 1 shot should be enough if you hit the bullseye from 10 yards or further. What is the likelihood that you hit exactly where you are aiming, by chance? Very, very small. For this to happen, your trigger pull or sight picture should be off in a way to perfectly compensate the misaligned sights, which is very unlikely to happen.

  17. pull the trigger when the dot is somewhere on the A zone without worrying too much

     

    if you miss, its either your trigger pull, or you transition too early

     

    finally, dot need to be zeroed properly, and you have to think about height over bore issues for very small targets up close

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