Hmm, I that’s interesting. It doesn’t account for the Bolt riding over the round though. That can only be caused by the round sitting too low. Either in the magazine (feed lip adjustment) or the mag held too low in the stock. One other thing: You said you tried the mag from your Axis? Is it also chambered in 350 Legend? If not, I would not expect it to work. The 350 Legend magazine from Savage is pretty strange lol design. The lips are farther forward than others for bottle neck cartridges & there is a cutout portion of the lips in the back where the block is.

This the same mag you have for yours? (The feel lip design is crucial)