A longtime reloader just sent me a box of 7mm Rem mag cartridges as a gift topped with 175g Speer magna-tips.
I found today that they would not chamber properly. the bolt would only close with extreme difficulty, so I did not care to experiment with my trigger.
The bolt removed, the 7mm cartridges fit the face well, but I had to remove the bolt to tap back the cartridge, which was (lightly) lodged in the chamber. Other rounds chambered fine. What should I investigate? OAL was fine, but I didn't measure any other parts at the range.