Home Forums Hunting & Shooting AR and Tactical Rifles Modern use of a 7.62 AR10

Here's the numbers, I was actually flatter than predicted at 1800. actual correction of 22 mils, vs 23.2 mils calculated by JBM.

I ran calcs based on 4000' ASL, but shot at 4600' ASL. That could account for some of the difference.

Shane, that looks an awful lot like a bolt action. I believe the op was asking about the ar10/ar308 platform. Are you running one of those, or just the bolt gun? In my previous posts, I was comparing my experience tit for tat, but pertaining to the ops question on the ar platform.

You're right.

When precision shooting came into the conversation, I kind of de-railed.

Ha ha. I hear you.

yeah, that's a good load. My 14.5 308 is 2.5 mil at 400m, but that was with a lighter bullet going faster.

The whole genesis of my thought process here is my 14.5 308 is outperformed by a 6.5 at every range from an external ballistics perspective, and the 308 isn't reaching some magical level of terminal bullet performance at close range that the 6.5 is not. Dead is dead, and bullets only need above certain velocities to work. Something shot at the range where 308 brings more energy than 6.5 creedmoor is not going to know the difference between the two, and the 6.5 starts to pull away the further you get.

I know that I am not a wind-reading master, (yet) and I have been investigating higher BC bullets driven fast as a way to stack the odds in my favor. Why leave mechanical advantage on the table? If given a choice between two loads that both delivered a bullet at a velocity above its performance threshold, then the one that was more efficient should be the choice. I grant that caliber selection should be a holistic process, and what works for someone's situation may not work for someone else. I also grant that I may be too caught up in the theory on this.

I'm sure there is a niche military use for shorter 308s, but for us this may all be academic. It's certainly more important to get out there and get hunting instead of sitting at home. I know for the ranges I tend to take game, this is all a meaningless comparison at the end of the day. But greater performance at range, with a larger margin for error on wind calls, for less recoil all seems like a pretty nice advantage.

Well said, so why are you dragging your feet?

I keep one beside the bed loaded with AMAXs and topped with an aimpont.
You figure out why.

Just for chits and giggles, post up a pic of that precision AR10. Also, how "precise" is it?

It's more precise than a FAL

And perhaps stoked with some 125gr Nosler Ballistic Tips?

And tracers..

Ha ha.. Good one buddy. My airbore ranger buddy says the same thing. Steve, is that you? He has a bad azzed FAL and M1a that damn near shoots as good as his AR10, but he admits the AR platform produces better accuracy. In a recent AR shoot, it wasn't much of a match against some a holes 6.5 cm AR10 performance center.. It was almost as good as last year: some yay hoos from some bigger clubs in the Portland/Vancouver area came and wanted to impress us with some "speed shoots". I guess they didn't like our slow course of fire and proposed we shoot one of their shoots. To them 10 shots in 60 seconds was fast, or what they called a "speed shoot". Being the A hole that I am, I said that is not a "speed shoot". If you guys want a speed shoot, lets do 10 shots in 10 seconds. You are only scored for the bullets that hit the target in the time allotted. They were frazzled. Most were only able to get 7-8 shots on target and boy let me tell you what a joke for scores. Besides the fact they were only going to get 70 or 80 points IF they even hit the 10 ring. Needless to say, they did not even hit the 10 ring. Talk about hurt feelers. The 10 ring, as you know, is a pretty big target... Back to the OP, I know there are guys that don't like the 6.5 creedmoor, but they also need to face the facts that it has an edge over the 308 in terms of accuracy and even terminal ballistics (the further you get out there). As for a factory off the shelf rifle, I'd bet money that similar rifles chambered in 308win and 6.5cm, the cm is going to place hits closer together on the target. At least that is what I've seen. Also keeping in mind that when we shoot comps, its 10-20 shots for score.. None of this 3 shot group bullchidt.. As we know, anyone can get lucky every once in a while when it comes to 3 shot groups:

Here is a AR-10 You might find interesting, notice it has 2 pistol grips, the one in the back is a small electric drill clamped to the stock, then 2 bolts go to a bridge across the trigger, the drill is turned on by a bite switch, made from a electric car antenna, when you bite down on the red tip, it fires the rifle.

We made this up for a disabled vet that lost both arms at the shoulder, we put a scarf around the stock and his neck so he could wiggle his head around look threw the scope, when he got it all figured he could hit a 2" bull at 100 yrds every shot,if he didn't bite to hard and get a double tap, we set him up in a deer blind, and he shot a nice management buck, at about 150 yrds, he got a little excited and double tapped him, DRT. I backed him up, in case it didn't work but he didn't need my help. Rio7

Pretty cool rio. Good on you for helping that vet out.. I'm sure he loved that experience..

Pretty neat rig there!

Barry,

The first one like this i built on a AR-15 , but it cycled so fast, when you bit down on the bite switch it would rip of 3 or 4 rnds, the AR-10 cycles a lot slower. Rio7

Bet that would get your attention!

Knew a guy out in west Texas who was a pilot, and mounted semi auto Remington 6mm rifles on his wings, and hunted coyotes with it. He had rigged an old set of Ford pickup electric door locks to trigger them. Had a sight on the fuselage and had them sighted pretty close at 100 yards.

Ammo was cheaper then.

Barry, Yeh, the faster it would fire the harder i would bite down, couldn't hit anything, learned to only put a couple of rnds in the mag. I have shot hundreds of coyotes from a R-44 with my shot gun, but never cared for a ar-15, for coyotes, or pigs, I have shot a few Coyotes, from a Tri-Pacer, fixed wing but used my shotgun, I would liked to have seen the 6mm setup on the fixed wing, bet that was kick ass set up. Rio7

168 AMAXs at 2500 MV.
Doubtful they will penetrate even the skinniest vermin at hallway distance.

What have you shot with that combination and how did it work? I may bust a few nuisance hogs with it at about 2550.

Thanks.