lemoyne
I only use T7-3f in my side locks.... I do use 2f in the inlines basically because I know I can ignite 2f in really cold weather with a 209 or a 25ACP. On the other hand in a side lock using percussion caps it is a toss up if it will go off. Everything is just to cold, but with 3f I can get the powder out under the cap and it ignites just fine...
The only comparison test of the two powders I have done is from a side lock. 3f did not give me a great velocity boost nor was it any more accurate.... I think I have some velocities here someplace - let me look. These are from a TC Renegade 1/48 twist
Here is some information if it will help any....
(17-18-19) were shot at the top right bull...