SD/ES Help!...pleaseee

[Ringostar]

It could be a lot of things. What is your barrel twist rate? It might not be fast enough for the 77gn bullets. What is your barrel length? It will make a difference on which powder works best. What do you have for a trigger? The standard AR trigger is fairly heavy for shooting good groups. Do you have access to a different scale? I don't have any faith in my Gempro, it varied way to much. My shooting really improved when I switched to a good older balance beam.

 

[Tha Gunson]

It could be a lot of things. What is your barrel twist rate? It might not be fast enough for the 77gn bullets. What is your barrel length? It will make a difference on which powder works best. What do you have for a trigger? The standard AR trigger is fairly heavy for shooting good groups. Do you have access to a different scale? I don't have any faith in my Gempro, it varied way to much. My shooting really improved when I switched to a good older balance beam.

20", 8 twist barrel with a 4.5 pound geissele trigger. I've checked many times over-basically every time-and am very comfortable with the accuracy and precision of each weighed charge. I've tried varget and h4895 because it's important to me that the powder is very temperature stable (for this build). Open to any and all suggestions, thanks.

 

[Ringostar]

I don't load 223 for an AR yet. I've had parts for years to put together an upper, just haven't done it yet. I have a Brux 26" barrel for it. I know a lot of ATC shooters that say to use Varget for longer match rifle barrel. But to use RL15 for 20" service rifle barrels. Maybe you need a slightly faster powder for the barrel that you have. The IMR Enduron 4166 could be a possibility. It's a little aster than Varget and temp stable.