I would like to know what rifle and what magazine. The savage can shoot smokeless powder and the fastest load they show for it is 2330 fps. That is with 43 grn of IMR smokeless powder and a 250 grn hornady bullet.

I can't see 2900fps with a 350 grn bullet, especially with a black powder substitute. My gun with 100 grn of 777 fffg only gets around 1600-1700 fps with a 350 grn bullet. I can't imagine how much powder you would have to use to get that kind of velocity. I honestly don't think you could do it. If you put that much powder in there I doubt it would all burn so it wouldn't do you any good. If I did I highly doubt it would be accurate.

I looked at some load data for 150 grns of smokeless and bullets over 300 grns and none of them even broke the 200 fps mark. I'm going to search for this rifle and see if I can find it. It is going to have to be with smokeless powder, and the only one I know of is the savage.

Paul