Anyone else seeing this happen?? Shooting a 338 RUM LSS remington 700 with a muzzle break on and the Federal 225 accubond's are deforming in my magazine.These are brand new right out of the box...Last time I shot them was at a moose in 20 deg Fahrenheit and both tips were deformed.........
I have a 300 RUM and I have noticed that happening before in my gun. This is what I found in my case.....I put a shell in the mag and then watched the tip of it as I closed the bolt. Mine was catching the metal in the front of the magazine as it made it's way up and into the chamber. I could see the tip of it hit the metal and when I slammed the bolt shut after a shot the tip of the bullet would break or shear half of it off. I may be way off, but that may be what is happening to your bullets. Just a suggestion.
I have a light 325wsm, and I bend the plastic tips on every bullet in the magazine. The recoil is fast and the shells slide forward and flatten the tips with every shot. My 300rum has no problem, but it is a heavier rifle and the recoil seems slower.
If you have bullets from the same lot that have not been loaded in the rifle check them also. I had a box of 200 grain 30 cal accubonds that some of the tips were deformed as if they were melting like an ice cream cone. About 1/2 the bullets were bad. They shot terrible also.