KenSel,
I might be wrong, but I thought 1 MOA equaled 1 inch at 100 yards, or 1/2 inch at 50, or 2 inches at 200, etc.
The groups you are getting are similar to the groups I'm now getting from my 44 magnum barrel (after compensating for a poor barrel/receiver fit). Your experience seems to confirm that H&R is now producing some very nice 44 magnum barrels.
Unlike the barrels H&R used to produce, my new barrel slugged out at about .429 inches. With this tighter bore, these barrels may not need the wider XTP bullets to shoot well. But the XTP's still seem to shoot just fine in them. In my gun, the XTP's shoot about the same as winchester partition golds and remington JHP's.
Duane