Hi Kurt------i understand the fit considerations specially with PP
I only work the "neck" expanding it to just a push fit for the GG bullet----------it does seem to matter that the rest of the case continues to fit itself to the chamber
We will see saturday
I did have a reamer ground for the 22 silhouette rifles i'm building---its sized to the particular ammunition, head-space will also be set to the specific rimfire ammo----looking forward to the final build as soon as barrels get here
have fun shooting the steel critters
Dave