7 Degree Lead

[bruce moulds]

I have a 7 degree transition/leade combined, and it has definitely done away with paper and lead rings.
it is not however a universal panacea.
greasers shot better right from the getgo, and pp lost the fliers, but groups were not fantastic.
dual diameter pp bullets solved that issue.
the thing is that in front of the case, there is the thickness of the case neck clearance on the bullet, and this tapers away for 0.100 length to nothing.
even 30/1 alloy cannot bump up to fill this area, and the back of the patch is blown off.
my next experiment in this area will either be a 12 or 15 degree transition.
keep safe,
bruce.