What would be a good powder to use in my AR? Esox357.

50 different answers from 50 different people.

Me first.....H335.

The cleaner the better in an AR.

The military changed to BL C-2 to minimize chamber fouling in the M16's.

It's a good selecttion.

WC 844

get it from Gibrass.com

Thanks for the suggestions guys. I think I will use the H335 in a bolt gun and try the BL C-2. Esox357.

Benchmark is my favorite.

my bolt has great groups with accurate 2230 and 2015

H335, Varget, 748

An AR will work better and longer if you stick to a powder at the faster end of the suitable burn rates. The reason is the remaining pressure when the bullet uncovers the gas port. You want that to happen when the pressure curve is as flat as possible, so the pressure is as consistent as possible at that instant. If the port is uncovered while the pressure curve is still steeply descending, the slightest variation in timing (bullet velocity) at that instant will give widely differing impulses to the gas piston and concomitant differing vibration patterns in the rifle. At extremes, the bolt can be slammed back hard enough to rip the rim off the still-expanded and firmly stuck cartridge case!

If I had an AR shooting normal weight bullets (50-55), I'd feed it powder in the 4198, Benchmark, H322, RL-10X, 2015 area.

gas piston? Where did I miss that?

all of the above choices are not bad. I've run just about every powder that could be tried in the AR over the years. In a correct and accurate barrel they don't seem to mind much at all.

The above answers can very much so be tainted by what bullet weights you are using and what you are after. Much as choice of primers can be somewhat dictated by choice of powder.

FWIW I had some really horrible luck with AA powders some years back. Lot to lot varying up to 200 fps and never knew if you'd get accurate loads or not. Have refused AA since then.
For cost savings 844 is not a bad place at all to start!!!

Jeff