Author Topic: Do you practice with the same grain ammo as you carry?  (Read 641 times)

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Offline aflevine

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Do you practice with the same grain ammo as you carry?
« on: August 11, 2019, 09:51:06 PM »
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?
« Last Edit: August 11, 2019, 11:04:51 PM by aflevine »

Offline MadDuner

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Re: Do you practice with the same grain bullet as you carry?
« Reply #1 on: August 11, 2019, 10:05:33 PM »
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.

Offline Smitty79

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Re: Do you practice with the same grain cartridge as you carry?
« Reply #2 on: August 11, 2019, 10:47:15 PM »
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.
Don't mistake my high post count for knowledge or wisdom.   I just like hearing myself type.

Offline Ma}{imus

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Re: Do you practice with the same grain cartridge as you carry?
« Reply #3 on: August 11, 2019, 10:48:45 PM »
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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Offline 1SOW

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Re: Do you practice with the same grain cartridge as you carry?
« Reply #4 on: August 11, 2019, 11:19:46 PM »
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.



Offline seebee62

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Re: Do you practice with the same grain ammo as you carry?
« Reply #5 on: August 11, 2019, 11:20:33 PM »
I’ll practice with 115 or 124 and I carry 124.


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Offline deadsh0t

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Re: Do you practice with the same grain ammo as you carry?
« Reply #6 on: August 12, 2019, 03:13:28 AM »
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

Offline DWARREN

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Re: Do you practice with the same grain ammo as you carry?
« Reply #7 on: August 12, 2019, 03:25:00 AM »
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..
SHUT UP AND RELOAD!

Online M1A4ME

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Re: Do you practice with the same grain ammo as you carry?
« Reply #8 on: August 12, 2019, 06:42:05 AM »
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.
I stopped carrying the SIG 556R.  SIG changed models and couple/three times and stopped supporting it with parts.  So, I stopped supporting SIG.  Back to the tried/true AR15 Carbine.

Offline Vinny

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Re: Do you practice with the same grain ammo as you carry?
« Reply #9 on: August 12, 2019, 08:43:11 AM »
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.........
« Last Edit: August 13, 2019, 01:14:44 PM by Vinny »
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Offline Tok36

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Re: Do you practice with the same grain ammo as you carry?
« Reply #10 on: August 12, 2019, 12:03:28 PM »
Same grain weight (124g) but different bullet.
Will work for CZ pics! (including but not limited to all CZ clones)

Offline FALer

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Re: Do you practice with the same grain ammo as you carry?
« Reply #11 on: August 12, 2019, 12:15:30 PM »
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. 

Offline Wobbly

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Re: Do you practice with the same grain ammo as you carry?
« Reply #12 on: August 12, 2019, 09:21:46 PM »
Always the same weight bullet, but very rarely the same brand of bullet.
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Offline nettle

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Re: Do you practice with the same grain ammo as you carry?
« Reply #13 on: August 12, 2019, 09:44:35 PM »
Same bullet weight (124gr) and same powder. Not the usually the same brand bullet.

Online recoilguy

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Re: Do you practice with the same grain ammo as you carry?
« Reply #14 on: August 13, 2019, 10:51:49 AM »
Yes
What I lack in speed , I make up for with inaccuracy