Holley

I myself personally would go with the 3f in Triple 7 - I have not shot enough real BP to give a good evaluation there, but again I do prefer T7 because it is not near as corrosive as BP....

The difference in 2f and 3f is in the size of the granuals - it will not make, or it has not for me made a big difference in velocity or accuracy. I believe that 3f ignites quicker, reachs peak pressure quicker, and burns out quicker than 2f. + plus I lean to the fact that it burns a little cleaner...

You get to make the decision though....