300 Blackout CB Loads
Posted: Tue Mar 15, 2016 5:43 pm
My first thread on this forum.
I recently purchased a custom 300 Blackout barrel from MGM and have been having a difficult time getting a jacketed bullet to group less than 2.5" @ 100 yards.
I have tried about 8 different bullets and 8 different powders with about 8 different loads per bullet.
That's about 512 combinations.
So now I would like to add to that mass of variables by using a good cast bullet and appropriate powder load.
Anybody have any suggestions?
My 357 Remington MAXimum shoots consistent 1" groups at 200 yards using 180 grain Cast Performance products with 19.0 grains of IMR 4227.
I would like to attain this same or similar performance.
I recently purchased a custom 300 Blackout barrel from MGM and have been having a difficult time getting a jacketed bullet to group less than 2.5" @ 100 yards.
I have tried about 8 different bullets and 8 different powders with about 8 different loads per bullet.
That's about 512 combinations.
So now I would like to add to that mass of variables by using a good cast bullet and appropriate powder load.
Anybody have any suggestions?
My 357 Remington MAXimum shoots consistent 1" groups at 200 yards using 180 grain Cast Performance products with 19.0 grains of IMR 4227.
I would like to attain this same or similar performance.