I use T7-2f in all of the inlines and 3f in the side hammers. I use the 3f in the side hammer because it is easier to ignite than 2f in severly cold weather. Other than that not a big difference.

It may burn a little cleaner - but I am not sure since I am using #11 caps in the side hammers there is not 'crud ring' and with the 209's in the inlines there is a hint of a 'crud ring' but nothing significant.

Shooting a MK-85 with 110 grains of T7-3f and I number #11 cap I have shot 31 shots in a row with out a patch - 2f would have probably done the same thing with a cap.

Hodgdon says to reduce loads by 10% when moving from 2f to 3f but after all the shooting I have done with the two, I am now loading pretty much grain for grain but in the rifles I am using they are all rated for more than I am shooting of ether one.

I shot this table awhile back and you can use it for a comparison of the two powders.... This one is for a 45 cal gun shooting a 200 grain bullet. As you look through the table you can see that at a point the 3f which ignites faster and burns out faster starts loosing velocity as you move up the powder scal



This is a 50 cal table but it is incomplete and the shooting date was so long ago I would have to start all over now...