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.

Are you talking about casting your own, or buying them already cast ?
Here is a list of company's selling cast bullets

http://www.go2gbo.com/forums/cast-bulle ... e-review)/

im shooting .300 BLK in informal silhouette matches. Im running 14.5 graiuns N110 with 110 V max and Sierra 125 SP. It takes the rams.

ML