I was recently given an Ar-10, its a delton. The barrel is 16in. Its previous owner didnt take the greatest of care of it, but doesn't have rust or pitting in the barrel. Been trying to group it and see what i can get. Any advice on what works good in this gun specifically or things similar to it?
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Best round for ar-10 .308?
- Thread starter ShooterVaughn
- Start date
Mine loves M118LR...although it seems to be as much as FGMM these days.
The FGMM 168 / 175 is used as a standard to see what the gun is doing by many people.
You might find a better round for a particular barrel but the op is tying to evaluate his newly acquired ar 10.
If it won't group with these I think time for a new barrel if no other problems are found.
My sons rifle liked the fgmm so well it took me a long time to best it with reloads.
Undoubtedly the firearm was specked out with it as test criteria back in the day.
So ya a bit biased for that stuff as a universal test round. It has held steady for years and always used to check for problems if groups open up.
Sub 1/2 inch in his gun we stopped shopping and started reloading.
Using the same brass primer and bullet the only powder I could beat it with was Varget that I tried. When we ran out of varget I could not get past 0.6 with anything.
Edit: 20 inch ruger tactical bolt gun.
You might find a better round for a particular barrel but the op is tying to evaluate his newly acquired ar 10.
If it won't group with these I think time for a new barrel if no other problems are found.
My sons rifle liked the fgmm so well it took me a long time to best it with reloads.
Undoubtedly the firearm was specked out with it as test criteria back in the day.
So ya a bit biased for that stuff as a universal test round. It has held steady for years and always used to check for problems if groups open up.
Sub 1/2 inch in his gun we stopped shopping and started reloading.
Using the same brass primer and bullet the only powder I could beat it with was Varget that I tried. When we ran out of varget I could not get past 0.6 with anything.
Edit: 20 inch ruger tactical bolt gun.
I think Freedom Munitions has some 308 ammo with TMK's loaded, some M118LR its not great ammo, maybe 1.5 MOA stuff but good enough to plink steel out to 1K. Just not FGGM ammo which is the goto for 308 factory. Norma factory ammo is not bad in 168/175 pills.
TAP 168 is great ammo.
PB
TAP 168 is great ammo.
PB
This is in stock and I have read from several folks on here raving about accuracy and low SD. About as cheap as you’re gonna get for match ammo.
www.midwayusa.com
IMI Razor Core 7.62x51mm NATO Ammo 175 Grain Sierra MatchKing Jacketed
This IMI 7.62x51mm NATO Razor Core Hollow Point Boat Tail ammunition is a great choice for shooters looking for an affordable target shooting round,...
www.midwayusa.com
I have shot a match with this ammo, all I had at the time .https://www.federalpremium.com/rifle/premium-centerfire-rifle/nosler-partition/11-P308E.html
It shot sub MOA. I was not hand loading at the time. Groups great out of my RR 26" 1:10 twist. Give it a try. I have switched to hand loading berger VLD's. With berger handloads I have shot one hole 5 shot groups a couple times. So get hand loading.
It shot sub MOA. I was not hand loading at the time. Groups great out of my RR 26" 1:10 twist. Give it a try. I have switched to hand loading berger VLD's. With berger handloads I have shot one hole 5 shot groups a couple times. So get hand loading.
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Just curious as to your reason for your preference? It does seem more folks do this. I’ve had good luck with 185 Juggs from both and better ballistics than lighter bullets from my rifles so stick with those.
Maybe it's Garand/M1A related.
I get great "close" distance groups with 168 and all that metal mass flying around.
No need to stress an oprod or deal with more .308 bolt carrier velocity.
I think of semis as awesome 800 and in but beat by bolts beyond.
I have shot mine further but you have more working against you.
.....and 168s will go beyond 800 also.
The 800 and in was my mantra also with the caveat of (with shorter barrels). The longer the barrel the more you can push this limit.
185 Jugg is 920 ft/lb vs 710 and 530 respectively for 175 SMK and 168 SMK at 800 yd outta my Seekins w/ 18” Proof CF 1:10. Similar results interestingly enough from my 24” bolt gun. Approx 40-80 ft/lb difference only.
Drift difference in 10mph wind is 25” at that distance.
Drift difference in 10mph wind is 25” at that distance.
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M80A1.
FGMM is for limp-wristed manbuns.
Go big, or GTFO.
FGMM is for limp-wristed manbuns.
Go big, or GTFO.
Easiest answer
Shooting at paper : FGMM 175 and 185.
Shooting at living things - Fusion 150.
Shooting at paper : FGMM 175 and 185.
Shooting at living things - Fusion 150.
Remind me never to build a sand castle when you’re at the beach.
Terrible out of my 18" Ballistic Advantage barrel. The 155 Amax shows the best promise but I've reduce the load to the point where I may be compensating for my poor marksmanship skills. Granted its a cheap barrel. About to test four or five different 168 gr bullets next. The 168 SMK shoots reasonably well but still not happy.
It's fine just basic milspec stuff. I don't remember the primers being crimped so that's one less thing to worry about reloading.
