Comparing 7.62x54R PPU and 7.61x53R Lapua
1Since I had a few minutes and have not had a chance to slug either of my Finns I thought I'd briefly look at the PPU and Lapua cartridges. The PPU is 182gr and the Lapua 123gr. The big difference between the two is in the measurement of the bullet diameter. The PPU measures .310 and the Lapua is a .308. The neck seems slightly longer on the PPU than on the Lapua.