M&P22 Pistol & Mini-Mag ammo test - MP-Pistol Forum

M&P22 Pistol & Mini-Mag ammo test

This is a discussion on M&P22 Pistol & Mini-Mag ammo test within the MP Ammunition forums, part of the Smith & Wesson MP Forum category; Tested my M&P22 pistol with two types of CCI Mini-Mags, 40gr solids and 36gr HP. The results are just the opposite of what I expected. ...


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Old February 5th, 2013, 01:06 PM   #1
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M&P22 Pistol & Mini-Mag ammo test

Tested my M&P22 pistol with two types of CCI Mini-Mags, 40gr solids and 36gr HP. The results are just the opposite of what I expected. Sandbagged off a bench at 25 yards: 36gr HP consistantly shot 2" groups and the 40gr solids shot 3.5" groups. I tried 12 round mags of each, four times. It was really a surprise. You could actually feel a slight amount of greater recoil with the 40gr, which also surprised me.
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Old February 6th, 2013, 04:26 PM   #2
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M&P 22 mini mag test

Interesting. I've got a box of the 40gr mini mags and just found some Remington Yellow Jackets HP. Still have not fired a shot with my M&P 22.
Hoping to do that soon - having some ammo helps!
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Old February 6th, 2013, 10:23 PM   #3
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I was surprised about being able to notice a difference between only a 4 grain difference. I like shooting the 40's though.
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Old February 7th, 2013, 07:27 AM   #4
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Interesting...I will have to take a closer look at that.
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Old January 21st, 2014, 12:41 PM   #5
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I have both. I will take notice next range trip
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Old February 5th, 2014, 03:50 PM   #6
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Quote:
Originally Posted by agksimon View Post
Tested my M&P22 pistol with two types of CCI Mini-Mags, 40gr solids and 36gr HP. The results are just the opposite of what I expected. Sandbagged off a bench at 25 yards: 36gr HP consistantly shot 2" groups and the 40gr solids shot 3.5" groups. I tried 12 round mags of each, four times. It was really a surprise. You could actually feel a slight amount of greater recoil with the 40gr, which also surprised me.
That is odd since the 40 grain bullets have less muzzle energy than the 36 grain bullets.

You should try the stingers. 1640 fps.





.
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Old February 5th, 2014, 04:02 PM   #7
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How to convert bulk .22 into expensive target grade ammo - YouTube
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Old February 5th, 2014, 04:37 PM   #8
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Originally Posted by 24th id View Post
That is odd since the 40 grain bullets have less muzzle energy than the 36 grain bullets.

You should try the stingers. 1640 fps.
I just looked it up and according to the CCI website:
Mini-Mag 36grain muzzle energy is 127
Mini-Mag 40grain muzzle energy is 135
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Old February 5th, 2014, 09:30 PM   #9
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Quote:
Originally Posted by agksimon View Post
I just looked it up and according to the CCI website:
Mini-Mag 36grain muzzle energy is 127
Mini-Mag 40grain muzzle energy is 135


That's odd I just looked and to was 127 for the 36 grain and 98 for the 40 grain.

OK, I found it. You have the mini-mag high velocity. You are right




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Last edited by 24th id; February 5th, 2014 at 09:33 PM.
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Old February 6th, 2014, 03:49 AM   #10
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Not sure if it translates... but a 40 Cal hollow point is typically a bit more accurate than a 40 Cal FMJ/solid. I think it is due to more of the weight of the bullet being spread out away from it's center-line and shifted to the rear of the bullet, so it spin-stabilizes better.

The same may be true for 22s. Hollow-points of the same quality may out-shoot solids.

Jeff
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Old January 1st, 2015, 03:08 AM   #11
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Quote:
Originally Posted by agksimon View Post
Tested my M&P22 pistol with two types of CCI Mini-Mags, 40gr solids and 36gr HP. The results are just the opposite of what I expected. Sandbagged off a bench at 25 yards: 36gr HP consistantly shot 2" groups and the 40gr solids shot 3.5" groups. I tried 12 round mags of each, four times. It was really a surprise. You could actually feel a slight amount of greater recoil with the 40gr, which also surprised me.
I own the M&P22 and the only ammo it reliably shoots is the CCI AR Tactical. I kept having stove-pipes or mis-fires with Winchester Super-X. Can you recommend other brands of reliable ammo? Could this be a problem with the gun?
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Old January 1st, 2015, 02:10 PM   #12
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Originally Posted by rmf11699 View Post
I own the M&P22 and the only ammo it reliably shoots is the CCI AR Tactical. I kept having stove-pipes or mis-fires with Winchester Super-X. Can you recommend other brands of reliable ammo? Could this be a problem with the gun?
If you have the M&P22 full sized version, they are made by Walther and use a heavier recoil spring than other brands like the Ruger. CCI Mini-Mag and AR tactical are the only ammo I've been able to run 100% and I've tried all the bulk ammo out there.
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Old January 2nd, 2015, 03:27 PM   #13
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Originally Posted by rmf11699 View Post
I own the M&P22 and the only ammo it reliably shoots is the CCI AR Tactical. I kept having stove-pipes or mis-fires with Winchester Super-X. Can you recommend other brands of reliable ammo? Could this be a problem with the gun?
I have that problem with Winchester Super-X in my Ruger 10/22 of all things. The only brand it has a problem with. It was a brick in the wooden box from Cabela's.
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Old January 2nd, 2015, 04:36 PM   #14
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My M&P .22 has run 100% only on mini mags.
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Old January 2nd, 2015, 04:52 PM   #15
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I've put Blazer Bulk, CCI Standard, Thunderbolt, Stingers, Mini-Mags and something else I just can't remember, through my M&P22 without any failures. Granted, only about five 12 round mags of each though.
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