Someone asked me for more info on 8.15x46mm case length as it relates to case mouth ID. I have used RP 30-30 brass, fire-formed it and cut it to length. The specs. for  the 8.15x46 call for a length of 46.50mm or 1.833". At this length the case mouth ID. is .328". At a length of 48.50mm or 1.910 the case mouth ID. is .322". With stop-ring bullets the longer the case the deeper the bullet is pushed into the rifling. Attached is a picture of both of these case lengths and the bullet engraving into the rifling. Please forgive the picture as my camera doesn't like close ups. I have marked the picture with red to show the amount of rifling engagement. I hope this answers more questions than it creates.

A. J. Palik

P.S. the bullet is by accurate- mold# 32-182L in 1:25

the bullet is by accurate- mold# 32-182L in 1:25

I am able to insert the round with my thumb but for the last little bit. The Buchel Meister has enough camming ability to seat the last little bit. If I cast in a harder alloy I think seating would be a lot harder. I  tweaked the dimension of the base bands to .322 (bands below the stop-ring) as that is the mouth ID of the longer case. Depending on your chamber dimensions the stop-ring could also be a little larger but as this round being new to me I didn't want to push the limits too far. I will report what it does on paper as soon as the weather turns a bit milder.

A. J. Palik