I just slugged to Win M-94s and a Marlin 1895 G . The M-94s were .429 and .375-376. The bullets were very easy to pop through once they got past the crown. The Marlin was at .459 and I had to tap pretty hard to get the bullet to come out the chamber. Do I purchase my bullets one size up from these measurements. They are a .375 Win and a .444 Marlin and a .45-70.