If my reloads get warm the lever will pop open.
To the first part of the thread, I replaced the finger lever plunger and spring not because the lever was popping open, but because it was too loud on fully closing gripping the rifle in preparation for a shot, that loud CLINK would have caused a deer in the thickets to bolt to the next county.
To the hot loads, I don't think so, I push the 220gr Speers to 2175 fps with Leverevolution powder in an old Matlin 336 35 Remington, that's a hellbender load in a lever action for sure, I use Hornady brass, the pockets are still good and tight, accuracy is stupid good for a lever rifle.
