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Joined: Jan 2018
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Joined: Jan 2018
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I see Hornady makes a .308 125gr FMJ bullet. Was wondering how it would work in an AR. Any here have experience with a 125gr bullet in the 308 AR? If so what powder worked in this platform? Need a load that stays under 50,000 PSI.
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Joined: Nov 2002
Posts: 21,772 Likes: 2
Campfire Ranger
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Campfire Ranger
Joined: Nov 2002
Posts: 21,772 Likes: 2 |
I have shot the hornady TAP 115 grain Vmax ammo in a 308 AR.
Quite accurate. Wind moves it around past 200 yards.
The 125 should be fine
Never hand loaded anything in 308 except 175 SMKs
God luck
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Joined: Jan 2018
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Campfire Regular
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Campfire Regular
Joined: Jan 2018
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Was hoping someone had experience with this weight bullet in the AR platform. In a bolt action, many different powders can be used. In the AR type action their are powders in a specific burning rage that function the action safely & properly. Powders like H-4895 & Varget.
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Joined: Jul 2015
Posts: 14,722 Likes: 2
Campfire Outfitter
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Campfire Outfitter
Joined: Jul 2015
Posts: 14,722 Likes: 2 |
Just take the powder charge from your 150 or 168 or even 175gr load and seat a 125 instead. Makes a wonderful, accurate, low-recoil load especially with stick powder.
Any of the normal sticks will work - 4895, 4064, Varget, AR Comp, Re-15, N-140, etc.
Ball works too (748, BLC-2, etc), but unless you have a muzzle break they don't seem to be much less recoil due to the rocket effect of their muzzle blast.
Politics is War by Other Means
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Joined: Sep 2001
Posts: 19,077
Campfire Ranger
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Campfire Ranger
Joined: Sep 2001
Posts: 19,077 |
With a gas gun, port pressure will have more effect on cycling, than peak pressure.
Most M80 ball ammo uses a 147-150gr bullet and a powder charge around 41-42 gr of powder.
So a powder charge of around 41-42 gr should provide similar gas volume/port pressure.
I'd look into a loading manual and find a load for the 125gr bullet that gives suitable performance at around 41-42 grains of powder. Something with a burn rate similar to RL-7, or RL-10 should get you in the ballpark.
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Joined: Jan 2008
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Campfire Tracker
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Campfire Tracker
Joined: Jan 2008
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This is what I've found. Warning! Notes: All handloads were fired from a Colt LE901 with a 16-inch barrel. The three-shot groups were fired at 100 yards over a Shooting Chrony Beta Master chronograph 10 feet in front of the muzzle. Winchester cases and Winchester Large Rifle primers were used throughout. The Leupold Mark 4 3.5-10x 40mm scope was set on 10x. (Rifle AR Special Edition - Fall, 2013) Wt. Bullet Powder Charge Velocity
125 NBT TAC 49.0 2908 Warning! Notes: Sun Devil AR, 22-in. barrel. Velocity was measured with an Oehler M35P chronograph at 8 feet from the gun's muzzle. Accuracy is the average of two or more five-shot groups fired from a benchrest.
Wt. Bullet Powder Charge Velocity
125 Sierra H-335 47.0 3016
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