577-PM me when you can -
There is some confusion among the uninitiated about the 450 Alaskan. They are wildcat cartridges,
so the dimensions may vary. The "real 450 AK is the cartridge designed by Harold Johnson of Cooper Landing, AK. in the 1950s-
It has about a 25 degree shoulder.
Ballistically, the performance of the 450 Alaskan or 450 Fuller, is about equal to the 45-90 WCF.
It surpasses the 45-70 by quite a bit.
A "Straight" 450 has no shoulder and it is not a true 450 Alaskan. It is a long tapered case made from the 348 WCF ,
just like the original. It resembles the 45-90.
There are those who think it may feed better in the 86/Model 71 action.
Both versions properly chambered will work like they are supposed to. RCBS makes the correct dies.
