Originally Posted by
sabotloader
builder459
Ray, i have hesitated getting into this one because I honestly do know the twist rate of the GM-LRH 45 cal barrel. I have a couple of 50 GM's and they are 1/28 and I would assume the 45 would be the same thing.... BUT.... GM seems to believe that 1/30 twist (mathematically) is the ideal twist for a 45 and the shorter 45 cal bullets available. So when you look at a .451/488 gr. Bull Shop how that might do in that twist - I am really not sure. If the bullet is made well it should be OK but I just do not know.
Mike the GMB site is confusing lol. if i wanted to shoot .45 cal .460 or 488 gr bullets the 1:20 is the ticket. like you said the 1:30 shoots the lighter conicals well. where does that leave the .45 1:28? about the same as the 1:30? Ray