Author Topic: Do you practice with the same grain ammo as you carry?  (Read 414 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.

Online 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!

Offline 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.
Better to have it and not need it, than to need it and not have it.  So, if you see me walking the dogs with my SIG 556R, its okay.

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.

Offline 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

 

anything