This bullet has two cannelures. I'll use the one nearest the nose of the bullet as I'm loading for my 1895G. I use a load of 56 grains of Varget for the 400 grain Speer flat nose. Do you think the Swift bullet will generate significantly higher pressures than the Speer slug with that load? I realize I should start low and work up, but, in your experience, do the "A-Frame" bullets generate higher pressures?
Just curious.

The bullet weight is OK. The issue that tends to raise pressure is seating it deeper in the case. With a straight wall case, deeper bullet seating eats up powder space fast. My data shows the Speer bullet is 0.97" long and the Swift is 1.13" long. QuickLOAD says that if you seat both bullets to the same OAL (so the Swift base is deeper in the case, because of its greater length), you would have to reduce the charge from 56 grains of Varget to 50 grains to compensate for the reduction.

Keep in mind this from a computer program that works best with bottleneck cases. Even so, it is pretty good at apples to apples comparisons in other case shapes, so I expect the charge ratio will proove to be about right. Nonetheless, I would knock the load down to 45 grains and work back up toward 50, watching for the same pressure signs you used in developing the original Speer load.

Thanks Unclenick! You know your stuff.

John