lemoyne

You can get to loose! and I really believe it will effect accuracy as well as velocity.

If you are able to load the SW's now comfortably that is great. The sabot should be a MMP HPH-24. So with that sabot and any .451/452 bullet you really should be set.

I was shooting the A&H again today doing some testing. It was mid 20's in temp. The 452 Speers in HPH-24's did load tight this morning, I could still push it down the bore with my thumb and palm pressure from the other hand, but it took both hands on the range rod to seat them. 451 Speers went down piece of cake. I have used "crush ribs" in this gun but they dow fit a little to loose, but good enough for a quick second shot while hunting.

The blue MMP HPH-40 cal with a Hornady 200 grain XTP were really tight. Tight enough that I might not use them with this particular gun but I am sure they would be OK in the Remingtons or any of the Green Mountain 1/28 Hawken barrels.

Polishing the barrel with something like JB's is a good thought. Use to be I would shoot a bunch of conicals from a new barrel to smooth it out also. I would use JB's as the conical lube.