Chronographed the 46 inch barreled 45 caliber SMR

[Leatherbark]

For what it is worth I shot 5 across the chronograph last week with my Kibler 45 caliber SMR with 46 inch barrel.  I used 65 grains of Goex 3fg a .018 ticking patch lubed with LHV and a .440 Speer ball.

 The 5 shots averaged 1795 fps

[Bob McBride]

That correlates to what I've found in mine with the same load but with .022 patching. I used Swiss and was pushing 2000fps. That's just enough to set off Tannerite, which is nice.

[RichG]

55 gr Old Eynsford .445rb .020 patch, wet lube, Colerain round groove barrel, 1800fps. Was hoping a lighter charge would shoot better for trail work.
70 gr Old Eynsford .435rb .015 patch , mink oil 1980fps. Anything lighter wont shoot and 80gr load blows patches. Was using 75gr Goex with this load and getting 1950fps. Old Eynsford seems to require 5-10% less powder than the Goex I was using.