Hmmm

Very interesting...

This 450 seems to be a lot heavier, and made stronger also.

Is this some relation to cordite or what?

I cannot believe they would make a 450 bpe 10.5 lbs dolls head etc etc just to fire that round....

Or am i wrong?

The 577's are from 10-11 lbs normally, so whats going on?

Many thanks

Ben