kal long range bullet

[bruce moulds]

for some time I have struggled with shooting bore dia pp bullets in greaser chambers, 40 cal & 45 with fixed ammo.
with so much to do, most of the work has gone to 40 cal for economic reasons.
I have tried thick brass. yes it works a bit, but is not a cure all.
I have tried the 7 degree thing, and while that eliminates lead and paper rings, it is not without problems either. the main one being that the gap presented by the transition is so long that the paper is often blown away at the base of the bearing surface. the way to minimize this is to use a softer alloy, which allows the bullet to bump into the transition quicker, thus protecting the patch.
this of course also allows the nose to come back more as well, reducing b.c. and increasing wind deflection.
the old rule that came to mind was that you need to fill an obturated case with bullet in the chamber, equally so for gg and pp bullets. if the bullet is already full size in the chamber it cannot bump up further on firing. this means that it will not allow as much bumpup in the transition as well.
with this in mind I contacted rick at kal, and he made a 2 diameter elliptical mould for me which is the work of an artist.
the larger diameter is 0.225 long, with a 7 degree taper at the front end, and then a patch to bore nose.
patched bullets can be finger seated in fired brass, with a groove dia base, and the rest of the bullet is a bore dia pp bullet.
patching turned out to be easier than expected, just making the patch a little longer at the base. it rolls on like a cone, and shrinks to the shape of the bullet as it dries.
first trial was at 700 metres where it held the best vert I have ever achieved.
the bullet is only about 0.1" in the case, with the change in diameter up against the transition/leade angle.
this assures very consistent coal, as that pushes the bullet back onto the wad.
the theory seems to work, but credit must go to the quality of the mould, and hence the bullets that come out of it.
how many of us have gone down the experimental road unknowingly using sub standard bullets and wasting our time?
from 700 metre(800 yds) on out is where issues start to arise with vert caused by less than perfect bullets.
of course this ammo is for specialized long range targets, and totally unsuited to hunting in general.
making the major diameter longer to go further in the case, and the smaller diameter smaller to allow chambering dirty rounds loaded with grease wads might be interesting.
keep safe,
bruce.