The Firing Line Forums - View Single Post - Sierra .22 cal 65 grain Gameking in an AR

MJFlores · June 2, 2013, 10:54 AM

I'm having a tough time working up a really good load with H322. Looks like I'm averaging 1.5" groups at 100 yards. Not bad, but I'd like better. They also shoot about 4 inches higher than 55 grain loads so if I choose this load to hunt with I'll need a scope adjustment of 12 clicks. I really need a second scope to use on the AR for load development...it's near impossible with a 4X scope. Also I'm thinking a chronograph will be in my near future. So far I've settled on 21.3 grains of H322 but will try adjusting bullet seating depth and maybe other powders once I have a higher power scope and chronograph.

June 2, 2013, 10:54 AM	#16
MJFlores Senior Member Join Date: April 8, 2013 Posts: 539	I'm having a tough time working up a really good load with H322. Looks like I'm averaging 1.5" groups at 100 yards. Not bad, but I'd like better. They also shoot about 4 inches higher than 55 grain loads so if I choose this load to hunt with I'll need a scope adjustment of 12 clicks. I really need a second scope to use on the AR for load development...it's near impossible with a 4X scope. Also I'm thinking a chronograph will be in my near future. So far I've settled on 21.3 grains of H322 but will try adjusting bullet seating depth and maybe other powders once I have a higher power scope and chronograph.