Have you tried any WMR? I have used this powder in loads of 90gr Bergers with good results, have loaded some 55gr bt's around 4200fps that shot sub min., but not good for long range I figure.I have some friends that have the Gibbs cartridges and Winchester Magnum Rifle works well in them also.
Hey Bandit try 46gr of WMR and a 55gr B.T.
Nosler, work your way up from here, most of my rifles have free bore so the OAL you will have to work out. Start with 43gr WMR and 90gr berger and work up, I use large rifle BR
primers with these loads. Sorry I haven't posted sooner, have been really busy with other projects. Most of my work with the 6/06 Ack Imp. has been 450 yds and closer
with devestating results on white tail Deer.
I really believed Roy Weatherby when he said velocity kills!!!