300 Blackout Sub-sonic Load Development

[jkonzal]

When doing sub-sonic load development for 300BLK, is it best to shoot groups at 50 or 100 yards? I am working with a bolt gun. Just wondering which distance guys with experience would recommend.

 

[Alabama556]

I always use 100 yards. I have a custom remington 700 and with aa#5 and 208 grain amax I get a bug hole and it is real quiet.

It really all depends on what you want to do with the gun. I don't shoot past 200 with mine and most shots are between 125 and 150.