Home Forums Hunting & Shooting AR and Tactical Rifles Most lethal ammo/bullet for 10.5" AR 15

I just ordered a 10.5" 5.56 pistol kit from PSA and I'm really looking forward to playing with it, I think it will make a neat little truck gun for critters and defense.

My question is what bullet/loadings will give the best terminal performance out of the 10.5" barrel?

I hope it is accurate and powerful enough for 300 yard shooting.

Any info will be appreciated

A 55 or 60gr VMax bullet in .223 has pretty massive expansion, without a requirement of extreme velocities.

Thin jacket and rapid expansion.

There's all sorts of "lethality" though. Depends on the application.

I've got a 10.5" PSA 5.56. It's not bad at all for accuracy. I have irons on mine now, but had a scope on it when I first started shooting it, just to see what was what.

Here are some 50 yard targets,




75gr HPBT, or similar will probably give best results further out. Maybe the Sierra 77gr TMK.

I did some rock plinking with mine out to around 550 yards, with M855 Green Tip. It was consistent, and reasonably accurate.

Thanks guys.

MM, your posts on the above gun are what made me pull the trigger on my own pistol build.

You may want to look into the 77gr TMK. It penetrates very well and causes a lot of destruction/good wound channel..

An old 50 gr Speer TNT bullet ought to do the trick.

Pass the 75 Hornie HPBT and hold the Fluff.

Hint..............

between the 77 Sierra and 77 nosler, the nosler was the more destructive far as fragmenting up. They didn't test the 75hornady, but from online reading it's just as destructive far as fragmenting.

I think it's safe to say you are going to have a lot of fun with it. They are a 'blast'....grin

Thanks guys.

I'm very tempted to put a linear comp on it to try and make it a little less of a "blast"

one shot without ear pro is permanent hearing damage with a 10.5 gun. Want to kill a deer or something to 100 or better?

Hornady TAP 55 gr. GMX.

Lethal for what. Coyotes or 200lb mammals? Barrier penetration a concern?

Form,

Barriers are of minimal concern to me.

Coyotes on down I feel ok with any varmint bullet.

Guess I'm more concerned with the 200lb variety, but if that bullet will still perform on varmints and predators more the better

Thanks

Formidilosis,

1) 200lb mammals w/o barrier?

2) Same with barrier?

Thanks.

I've never zooked a 75 Hornie HPBT at any angle,upon any Critter...no matter the speeds,from 3500fps on down.

Hint................

Zooked?

Stick,

I'm not at all worried about a 75 hornady zooking in the platform, I'm worried about them not expanding at all past really close distances. It's a badass bullet but I dont know what they will do when slowed down that much.

They'll crunch skeletons and what more could a guy WISH for?!?

Hint.................

77gr TMK, Speer Gold Dot 75gr, and probably the easiest Federal fusion 62gr. All will expand/fragment to 350+ meters from a 10.5” while penetrating at least 14”.


Have and do shoot a lot of 75gr Hornady HPBT, but below 2,100-2,200’ish FPS fragmentation/expansion is sporadic.







1) 77gr Sierra TMK

2) 75gr Speer Gold Dot.