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Jon, most people on this board would probably fire-lap with cast bullets, not jacketed. It is pretty easy to roll your own. Hence you aren't going to see much discussion of various brands.
I think that Marshall will sell you a small quantity of lapping bullets, 20 or 30 should be plenty for the average rifle, and he may have lapping compound also. If not he can give you some recommendations on what to use.
As an example I lapped my .30-06 with some of his .30 cal. lapping bullets. I used 4 grains of Bullseye in the '06 case. That should work for you or maybe you can even cut the charge back to 3.5 grains. But 4 grains should definitely work.
If you haven't gotten the Beartooth technical guide I'd highly recommend that also.
I think that Marshall will sell you a small quantity of lapping bullets, 20 or 30 should be plenty for the average rifle, and he may have lapping compound also. If not he can give you some recommendations on what to use.
As an example I lapped my .30-06 with some of his .30 cal. lapping bullets. I used 4 grains of Bullseye in the '06 case. That should work for you or maybe you can even cut the charge back to 3.5 grains. But 4 grains should definitely work.
If you haven't gotten the Beartooth technical guide I'd highly recommend that also.