Randy, are you doing any fire lapping or using any JB paste on the Savage ML'ers you are testing? - - - Any advice, personal experience, and info is appreciated.
No, I've not done any hand lapping / fire lapping on 10ML barrels, though some have and have reported easier loading, velocity increases, etc. I have gone the J-B Bore paste route on a few guns, but that is such a mild abrasive it is have served more as a really thorough cleaning / scrubbing vehicle for me than anything else.
One thing that is normally not present with bore lapping (and assorted other things) is a thoroughly documented before / after log. More than a few times, I've run into folks at the range (not only muzzleloaders) that have gushed, "
Man, does this gun shoot great! I sent it off for accurizing, they polished the heck out of everything, I had it magna-ported, the action re-bedded, trigger was stoned, added an extra pillar, oversize recoil lugs as well, and had the barrel hand-lapped as well. This thing really shoots!!!!![/b]"
So, you answer by congratulating them on their fine shooter, and then ask what their average group size was "before" and "after" all the modifications. "
Oh, never shot it before," is often the response. :roll:
So, the only real advice on lapping that I can toss out is to just relax, have fun, and shoot your new 10ML-II for a while to establish some sort of baseline. The 10ML-II I'm testing right now is a far more accurate shooter than I am. The test target it came with shows that it is just over a 1/2 MOA gun. I've not shot any groups with it
that good, personally, but there are three different bullets that have done better than 1" for me day after day at 100 or 120 yards. That's better than most muzzleloaders, and far better than required (for me, anyway) in a 200 yard hunting rifle. 1-1/2" repeatable accuracy to me is just great, and anything better than that is just icing on the cake. That barrel just will never be touched. I'd just look for a problem first before trying to solve it.
The 4140 Chrome-Moly vs. 416SS as "accurate" barrels has been debated quite a bit, but there seems to be no clear consensus on that. The 4140 is easier to machine, so my vague impression is that it is easier for some manufacturers to turn out closer tolerance barrels with it rather than 416. But, bench rest shooters seem to have a strong preference for SS, and Dan Lilja for example has observed that SS barrels last longer, and are more resistant to throat erosion. I personally prefer SS in inline muzzleloaders over carbon steel-- yet the Austin & Hallecks and now the T/C Contender in carbon steel are excellent shooters.