Thanks. I sent notes out to two British barrel makers, we'll see I guess. It's all silly of course, but I'm sentimental about these old wildcats and the world they came out of. This happened the same week I found an original .300 Hoffman barrel on ebay so it's kind of a perfect storm.
I did call Krieger and they said they couldn't do it. I didn't offer to pay for a reamer, didn't know it was an option, he didn't bring it up. Lothar Walther touts their "anything goes" custom options, I may call them tomorrow, but I'm not hopeful.
.284 may be the best option. What's 4 thousandths between friends?