Brent:

I kind of get the impression that your barrel was chambered with a reamer that was meant to be used with a seprate throating reamer. Such a reamer would have a 45* transition from the OD of the case neck to the bore diameter at the end of the chamber. This is sometimes referred to as the case stop.

This would in effect give you a 45* leade angle and mayhaps account for the lead shearing you seem to be experiencing.

What you might want to try just for giggles is to seat some bullets, if possible, so a grease groove is located right at the end of the case. Something like 1/3 of the groove in the case and the rest exposed. The idea is that when the big light goes on and the bullet bumps up, the lube flows into the space at the end of the case and filling it up. Once the space is full of lube, the lead cannot flow into it.

Best of luck,

Glenn

HST,
I currently seat the bullet with one groove fully exposed.  This puts the bullet tight against the rifling.   

I think you are right about the lead shearing issue.  I tapped a bullet into the throat a short distance and then back out and flakes of lead were sheared off of the bands. 

When I breech seat a bullet in this rifle, it does not lead at all.  And the accuracy is considerably better.

Long_Rifle, I have yet to shoot your bullets.  The rifle range is currently preempted for the Iowa Games shooting events so I won't shoot again until next weekend I think.

Brent

Hello Brent, Thanks for your report and hopefuly you can resolve that leading problem soon. Also thanks for the information on the Deep Creek range. I understand it is a class act and I hope to visit it this summer.  Long Rifle