Quote Originally Posted by loiner1965 View Post
tac...
i myself dont leave airspace in 577 / 450 rounds at all , weather i use betram / kynock or much larger capacity cbc cases which can swallow 120gns of bp.
i tend to use around 60gns of swiss and 3 gns of kapok.
another forum i frequent is the the british military forum where many experienced shooters shoot martinis with 85gns and air as the filler....
please check it out.....https://www.tapatalk.com/groups/...r+space#p18340
I only load .45-70 Govt, and leave no air-space at all, by using a drop-tubed load that allows of around 1/8th inch compression when loading the usual 405gr bullet. By all means continue to do what you have always done - same goes for your acquaintances and their empty spaces.

I guess I've nothing more to add to this thread.