Kuyong_Chuin
Member
I pulled a bullet from a 7.62x54R surplus round. I weighed the powder and I am logging each rounds powder of the ones I pull to check to see if the powder levels are the same. I wanted to replace a few of the steel cored FMJ bullets with the soft point boat-tails I have, and I was wondering if anyone knows what effect the new bullet would have on not only pressures but accuracy?
The bullet on the left is the original bullet and it weighed in at 147.8 grains.
The bullet on the right is a PPU 150 grain soft point boat-tail that weighed 149.2 grains. I lined up the channels for the picture. As you can see the SPBT has a shorter base as well as over all length but it is slightly heavier than the steel core bullet. I am figuring that the SPBT is going to have a lower pressure because it will not be seated as deep as the FMJ round.
By the way the powder that was in this first round I pulled is a stick powder that weighed 49.5 grains total if that helps.
The bullet on the left is the original bullet and it weighed in at 147.8 grains.
The bullet on the right is a PPU 150 grain soft point boat-tail that weighed 149.2 grains. I lined up the channels for the picture. As you can see the SPBT has a shorter base as well as over all length but it is slightly heavier than the steel core bullet. I am figuring that the SPBT is going to have a lower pressure because it will not be seated as deep as the FMJ round.
By the way the powder that was in this first round I pulled is a stick powder that weighed 49.5 grains total if that helps.