In spite of the fact that a lot of information has been put forth concerning recoil, the original post was:
Quote:
I read that early manufacturers liked to shoot 2 5/8" shells in 2.5" chambers because they felt it gave a better seal and performance. I have also heard that 2.75" shells in 2.5" chambers can dangerously increase pressures and tear the edge of the shell off, while I have also read that the increase in pressure by doing so is not all that much, say 500 psi +/-. There's a lot of conflicting info out there. Bottom line: would a 7k psi low pressure 2.75" shell be dangerous in a 2.5" chamber Lefever? I am reloading 2.5" shells anyway, but I would like to know if I can shoot some of the shells I already have.

Answers should be forthcoming.

JC

"...it is always advisable to perceive clearly our ignorance."ť Charles Darwin