.450 Ackley

[superwolf]

I am building a new hunting rifle and I am interested in the. 450 Ackley. While looking for info on the net and came across two types of Ackleys. One was the.450 Ackley Magnum and the other was the. 450 Ackley Improved.

Are these the same cartridges with different names or two different sized cartridges all together?

 

[superwolf]

Re: .450 Ackley

Are the .450 Ackley Magnum and .450 Ackley Improved the same or different? Thanks.

 

[cav has been]

Re: .450 Ackley

According to PO Ackleys handbook, vol.1, they are two different critters. The 450AI is formed from 348 Win. Shows a max load pushing 500gr at 2060 fps.
The 450mag.AI is formed from 375H&H brass and shows a max load pushing a 500gr. at 2470 fps and a 600gr at 2200 fps.