I bought a Rolling Block on Gunbroker. It has been rebarreled to 45-70. I suspect that it was not completely chambered. It has a .053 rim cut?
I have read where Paul Mathews had his chambered with a rim cut to accept brass with no more than a .066 rim thickness, which itself is less than the standard dimensions. Mathews talks of trimming brass to fit this.
I have found a few cartridges that would fire, but the hammer still binds up on the block.
My thoughts are to finish ream until it will chamber any cartridge.
What are your thoughts?
BW
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