Designing the 2-diameter paper patch bullet.

[beltfed]

Kurt,
I am fairly certain that it was when I was shooting the 40-72 on Sat that you observed the yaw.
Mike R had , in a previous match saw the same yaw when I was shooting the 40-72 with that 1.55" long BFSS bullet
As you know, last couple years , I am using DDEPP -Dual diameter Elliptical PP bullets in both the 40-65 and 40-72.
But still, the 40-65 outshoots the 40-72 for me at all distances.
beltfed/arnie