Shoot BR Cases from Your PPC Action with Rebated Rims
Butch Lambert of ShadeTree Engineering provided this tip. Butch notes that many 6 PPC benchrest group shooters also enjoy shooting in score matches. But to be really competitive in the BR for score game, that means shooting a 30BR, which has a wider, .308-class rim (0.4728″ diameter). Likewise, if you want to compete in 600-yard registered BR events or in varmint matches, you probably want to run a bigger case, such as the 6BR, 6mm Dasher, or 6-6.5×47. Those cartridges also have the larger 0.4728″ rims.
To convert a PPC-boltface action to shoot the bigger cases you can spend a ton of money and buy a new bolt. That can cost hundreds of dollars. The simpler solution is to turn down the diameter of the larger cases on a lathe. Butch explains: “We’ve seen plenty of interest in rebating case rims. This lets you shoot a 30BR in score matches using your PPC action. All you need is a new barrel. This saves buying another bolt, receiver, or rifle if you have a PPC boltface. Anyone who has access to a lathe can do this job pretty easily. Yesterday I turned 150 case in about an hour.” Below are photos of a rebated 6BR case, along with the lathe form tool Butch uses to rebate the case rims.
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Tags: 30BR, 6BR, Benchrest, Brass, Butch Lambert, PPC, Reloading, Shadetree
What about just having the bolt-face opened up? Cost is minimal (around $50) and it’s a one-time thing. What am I missing?
What you are missing is the bolt will no longer pull a PPC case. The rebated case allows you to use both cases.
Butch
I would like to see that lathe assembly, because I would need it for one project.
Where can you get those tools?
You can call me if you like at 972-524-2247 from 4:30-6:30pm Texas time. Basically, I put a Wilson BR case holder in the collet of my lathe. I have to trim it a bit so that the butt of the case sticks out enough for my form tool to cut the rims. You can hand grind a form tool to match the PPC rim and you just make a plunge cut. Pop the brass out and push another in.
Butch
If you have a BAT action, simply send in your bolt and they will open up the face for a very nominal charge. This is cheaper than a new bolt, saves buying a lathe, and the new .308 bolt face still shoots the 6PPC round with no trouble.
Same with the Kelbly actions.
would it not be easier to just build a 30PPC…?
Rich