450 Bushmaster heavy cast subsonics from an Axis?

[mattri]

Put together a 450 Bushmaster using a 1:16 barrel on an Axis platform.

Would like to use 300+grn lead bullets at subsonic velocities.

Thoughts?

[shagerott]

Not seeing Mfr published data. Some forums - googlefu - show fair results using Trailboss. That would be my pick - better fill ratio and less chance of sticking a bullet or making a ka-boom.

[mattri]

Thanks for the reply, surprised there isn't more info out there.

[mattri]

http://www.accuratemolds.com/bullet_detail.php?bullet=45-400S-D.png

This is the mold I ordered.

Any suggestions for load data?

[GaCop]

Thanks for the reply, surprised there isn't more info out there. I've been playing with a 273gr cast HP, G/C, poly coat and 316 gr cast G/C, poly coated, over Lil Gun. Accuracy so far has been nothing to get excited about but good enough to drop a hog at 100 yards. Over all, fantastic accuracy has been with the 250 grain FTX and 300 grain XTP-Mag with Lil Gun. I'm waiting on some 245 grain Hornady Interbonds to come in so I can test those.