The Original CZ Forum
GENERAL => Ammunition, questions, and handloading techniques => Topic started by: aflevine on August 11, 2019, 09:51:06 PM
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To date, I've been practicing with 115 gr ammo, but carry 147 gr HST's. Considering going to 147 gr practice ammo, so that it's apples to apples. For practice purposes, I can only see it mattering if I'm practicing at longer range (25 yards+). Does it matter enough to make the change?
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I can tell a pretty big difference in felt recoil of my defensive rounds vs the practice FMJs. I occasionally fire my +P defensive stuff - more or less as a function test after I tinker with my firearms.
I was working towards trying to reload rounds to mimic the defensive rounds for a more realistic practice round - but it was pointed out to me by some of the fine folks right here on this forum that my methods were unsafe. I was working in the blind without knowing how fast the rounds were going, and probably flirting with disaster. I heeded their warnings and advice and just accepted the fact that my practice rounds would be different.
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I loaded some ammo with the same weight and muzzle velocity. I practice with them sometimes. I don't feed my gun a steady diet of +p.
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I practice with my carry ammo only when I rotate out of the magazine. That tends to be every 6 months or so.
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I reload.
I load the same weight and type bullets to the same bullet speeds as my SD ammo.
Accuracy and "feel" are much the same for both cartridges.
I do believe practicing with your SD ammunition or ammunition that performs the same is a good policy.
A good quality SD pistol, quality ammunition and as realistic as possible practice will be worth the cost and effort.
Just an opinion.
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I’ll practice with 115 or 124 and I carry 124.
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You shouldn't be surprised about another reaction, they should be as similar as possible. For training and competition I use the same ammo, just different quality of bullets, but the reaction is the same
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Carry 124gr and practice with 124/125gr bullets.
I reload so some of my practice ammo is loaded to carry ammo specs the other for range..
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In the 9's I carry the same ammo I sometimes practice with. If you can call load development "practice" then I sometimes shoot ammo that is not the same as my carry ammo. I just keep looking for something I can reload cheaper/easier than my carry ammo.
In the .40's I found a load (lead/coated bullet) approximately the same weight that shoots to the same point of aim as my carry ammo. So I shoot those more for practice.
I want my practice ammo to have the same POA/POI as my carry ammo. And similar group size as well.
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I practice with fairly hot 9mm 115 and 124's that I believe are closer in velocity and PF to my carry ammo. Usually high 300's in rated energy (when tested from a 6" barrel).
I could be wrong but because my carry pistols are sub-compact 2.9" to 3-1/2" short barreled compact, I'm concerned that 147's wont achieve the necessary velocity to get full penetration and expand properly from a short barrel. So, I'm using 115gr JHP's. I wish I could test velocity, penetration and expansion to see if my theory is correct.
But here's some links to articles that at least indicate I'm on the right path:
https://www.ammoland.com/2017/06/short-barrel-ammo/#axzz5wP0q9KP1
https://www.shootingillustrated.com/articles/2010/10/21/snubby-ballistics/
Meanwhile....I found a cost-effective solution that allows me to practice regularly with my carry ammo. I shoot over 20,000 rounds/year so I'm not going to be practicing with 50 cent rounds. S&B 115gr JHP's (SB9C) seem to have good expansion characteristics from gel tests I've seen; yet cost <25 cents in bulk. The nose shape with no sharp edges feeds 100% every time. JMO
But, I'm here to learn if anyone else can provide factual data.........
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Same grain weight (124g) but different bullet.
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I usually shoot 124gr FMJ for practice, I carry 147gr +p. I do shoot my carry ammo a couple times a year, just a mag or two, the stuff I've been carrying.
I don't notice enough difference in how the gun handles or were the bullet strikes between 5 and 25 yrds to get too wrapped around the axle on it.
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Always the same weight bullet, but very rarely the same brand of bullet.
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Same bullet weight (124gr) and same powder. Not the usually the same brand bullet.
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Yes
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Same weight but lower velocity.
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I reload.
I load the same weight and type bullets to the same bullet speeds as my SD ammo.
Accuracy and "feel" are much the same for both cartridges.
I do believe practicing with your SD ammunition or ammunition that performs the same is a good policy.
A good quality SD pistol, quality ammunition and as realistic as possible practice will be worth the cost and effort.
Just an opinion.
Same here-just makes sense to me.
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I stock both. 115 just for cheap plinking. 147 for the gun suppressed stuff