PSA for the AR15 guys......

robtattoo

Well Known Rokslider
Joined
Mar 22, 2014
Messages
2,471
Location
Tullahoma, TN
I know it's been mentioned before. Maybe not here, but if you own a couple of different caliber ARs, I KNOW you've heard it.

DO NOT PUT .300BLK MAGS & 5.56 MAGS ON THE BENCH AT THE SAME TIME!!!!

I've been so f'king careful for 11 years about this. My mags are all very obviously marked & I only use steel in my BLK, poly mags in my 5.56s
I never, ever switch out mags & until today I've even gone so far as to never take both rifles to the range at the same time.

But.....I had to zero a new scope on my 5.56 & test out a new bullet in my .300 & I freaking did it.
I actually.
Freaking.
Did it.

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Thankfully, I was wearing my glasses & shooting from the bench, so no debris actually hit me, but the mag floorplate was embedded about a quarter inch into the bench top. Had I been shooting offhand, it would've effed my left arm up, royally.
 

ptmn

Junior Member
Joined
Mar 6, 2022
Messages
27
I'm just glad you didn't get seriously injured. Sucks that the weapon was destroyed, but weapons can be replaced, eye sight, life and limbs can't.

Also, thanks for the reminder. I've been complacent with different ammo on the bench before. I'm going to be a lot better about it from now on
 

Fatcamp

Well Known Rokslider
Joined
May 31, 2017
Messages
4,557
Location
Sodak
Dang. Whole reason I only own 5.56 I'm too dumb to complicate things. Passed on a .260 recently as well, cuz Creedmoor.
 

Dos Perros

Well Known Rokslider
Joined
Jul 30, 2015
Messages
3,687
Location
Lenexa, KS
So I'm dumb...

...did you put the little bullets in the big gun, or the big bullets in the little gun?
 

ChrisAU

Well Known Rokslider
Joined
Jan 12, 2018
Messages
4,570
Location
SE Alabama
I guess I'm surprised it even chambered? Maybe because I'm dumb tho.

They will chamber just fine. 300 Blk rounds are overall shorter and the 300 Blk bullet can sit right where the neck of a 5.56 is with a ton of headspace to give. I’ve seen this happen a few times on various forums lately. Even seen some barrels cut open to reveal a longggg cylinder of lead in .22 diameter.

DB2B49D2-E7AB-4276-A67A-19D020E8AE1A.jpeg
 

FLS

Well Known Rokslider
Joined
May 11, 2019
Messages
485
Watched a guy do that at a local 3 gun. Blew up an SBR, totaled the stamped lower, luckily no one was hurt. I was ROing him and we both had to go check our shorts.
 

manthb3

Junior Member
Joined
Jul 11, 2022
Messages
12
Glad you are ok. I have grabbed the wrong mag before while shooting both and just in time noticed the polymer tip was the wrong color.
 
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