breech seating bore diameter pp

[bruce moulds]

kurt,
thank you for the reply.
that compressed powder certainly looks like a projectile!
that slamming into the back of a bullet could offer much unhappiness.
my scheutzen friend and reading suggest that droptubing is all that is required. most cases will hold sufficient powder for long range by this method.
their 38/55 cases are using 60+gns, and I use 85 to 90 gns in the 40/72, depending on powder lots.
your photo has convinced me not to try compression, at least yet.
with droptubed powder and a gap, you probably have loose powder at primer pop, but we will never really know this.
it is easy to confuse creedmoor ammo with bison hunting ammo as they are from the same era. as well, compressed charges have become the norm because of the domination of sil shooting with fixed ammo.
it is just a mental adjustment to pursue creedmoor ammo if that is your interest. long range accuracy is the priority at all costs, and the odg seemed to breech seat to be competitive.
keep safe,
bruce.