I have and have used both. I see no difference in their shooting, either from the accuracy standpoint or their cleanliness
in shooting. With the smaller bores, Mr. Flintlock, like LHV needs more powder to get the same accuracy as a water based
lube. In the .40 and .45, this amounted to 10gr. more powder.
In the .69, they seem identical to any other lube. No wiping needed at any time, same poi and accuracy. The vel. however,
could be different. I have not chronographed it to find out. It matters not.
In the .40 and .45, however, LHV, in the 65gr. 3G F GOEX in the .40 and 75gr. 3F GOEX weight in the .45, both made over 2,230fps
- 2,240fps, seems to me IIRC. These velocities are higher than I have seen others post for these calibres and loads. I can
only chock that up to the ball and patch combinations I use, in comparison to theirs.