All,

I’m new to breach seating and am looking forward to trying it in a CPA rifle I just ordered, chambered in .38-55. The barrel will be a 30” Bartlien, 1:12 twist. I won't have the rifle for 3-6 months.

I have two molds, both tapered. An NOE 376-329 RN at about 330-grains and a Saeco #571 of about 300-grains. I'm getting a plugged case from CPA. I won't see the rifle for 4-6 months. 

I just filled the casting pot with about 30:1 alloy or slightly softer. I plan to make (50) of each mold, to get ready for the first range session. 

Question....not being real familiar with Stevens action, does it have some "camming" action that will let the plugged case be adequate to properly seat the bullet or should a breach seating tool be sought out? 

I've been shooting both bullets in a Rolling Block that has a 12 twist Green Mountain 30" octagon barrel, using fixed ammunition. The matches I shoot in are 100 and 200-yards, from the bench. These are CBA BR matches, score and group. Scope is a 24X Unertl. In the Roller, IMR 4227 grains seems to work best, 16-17 grans. 

Thanks for any suggestions, observations, etc.

Tom 
Minnesota

My dad is shooting a CPA 32-40. With 1:20, he can use the plugged case CPA sells no problem. It's been about 6 months and he does not see the need for a tool.

The only advantage I see if a tool is it may make it easier to find tune seating depth

I would keep an eye on the fore sale section to see if someone puts up a Weber breach seater for a cpa.  Even if it's for a different cartridge you can always convert it.

Chris.