Chronographed some duplex loads with the 158gr RF and I was pleased with the numbers, although there is room for improvement in the spread. I believe that deviation is the result of my powder scale struggling with very small measurement amounts, and in subsequent loadings I'm going to use a mechanical powder dropper which has proven very repeatable even with small amounts.
1.5gr Green Dot + 16.5gr IMR-4895 - 1473fps avg, spread = 49fps
2.0gr Green Dot + 16.0gr IMR-4895 - 1521fps avg, spread = 22fps
I am actually really pleased with the performance. I'm going to load up a few more and test for accuracy as well as I can - I don't have access to a shooting bench so accuracy for me usually falls into three categories: bad, OK, and good.
In my "bad," "OK," or "good" rating (calibrated for shooting at various sized target plates with iron sights offhand inside 100 yards) the 2.0gr Green Dot + 16.0gr IMR-4895 load rates a good. It is among the straightest-shooting loads I have developed for my Henry H015 Single Shot. I would absolutely consider using this load for anything which needed around 800ft*lbs of directly applied energy.
EDIT: Chronographed some duplex loads with the Accurate 35-245P. Eliminating unburned powder kernels took less Green Dot than with the 158gr boolit, but up to 2.5gr did not completely eliminate what I consider atypical residue in the barrel and my spider-sense told me not to venture further for reasons I can't articulate. Despite its velocity, because of the residue I don't consider the 1.0gr load a candidate for suppressor use. Will do more chrono and accuracy testing on 2.0gr load when I get some more time.
All values from single shot of each load:
0.5gr Green Dot + 12.0gr IMR-4895 - almost no reduction in unburned powder
1.0gr Green Dot + 11.5gr IMR-4895 - 1040fps, a single unburned kernel of powder and lots of residue
1.5gr Green Dot + 11.0gr IMR-4895 - 1104fps, no unburned powder, lots of residue
2.0gr Green Dot + 10.5gr IMR-4895 - 1151fps, no unburned powder, some residue
2.5gr Green Dot + 10.0gr IMR-4895 - 1197fps, no unburned powder, some residue
Additional velocity data from 5 shots with Accurate 35-245P:
2.0gr Green Dot + 10.5gr IMR-4895 - 1155fps (39 spread), no unburned powder, little residue; "good" accuracy.