Mil Spec AR 15, 16 " barrel. 1:8 twist
Stock S&W MP, not a match grade anything
55 gr FMJ BT w/c, LC brass trimmed to length, seated to the cannelure center.
AA 2230 powder with 23.0, 24.0 and 25.0 grains tested I also had been using IMR powders but can not believe it's the powder
Shot from a V shape sand bag rest Sighted in and shot at 50 yds.
Have been using Hornady bullets but found a stash of a bag of Winchester bulk bullets and used them. They look almost the same but are they really?
I have a Burris 3.5-10 scope on this rifle and can not seem to get decent groups, more of patterns
I am used to shooting my Savage Heavy barrel bolt Varmint and one hole accuracy. Really do not expect the same accuracy but better than 3-4 inch groups.
A 55 gr bullets seems light to me for a 1:8 twist but I have a bunch of them. I can try some 62 gr bullets but would like to get these to work.
Stock S&W MP, not a match grade anything
55 gr FMJ BT w/c, LC brass trimmed to length, seated to the cannelure center.
AA 2230 powder with 23.0, 24.0 and 25.0 grains tested I also had been using IMR powders but can not believe it's the powder
Shot from a V shape sand bag rest Sighted in and shot at 50 yds.
Have been using Hornady bullets but found a stash of a bag of Winchester bulk bullets and used them. They look almost the same but are they really?
I have a Burris 3.5-10 scope on this rifle and can not seem to get decent groups, more of patterns
I am used to shooting my Savage Heavy barrel bolt Varmint and one hole accuracy. Really do not expect the same accuracy but better than 3-4 inch groups.
A 55 gr bullets seems light to me for a 1:8 twist but I have a bunch of them. I can try some 62 gr bullets but would like to get these to work.