[freedom475]

I use 4f in my 44 Remingon 1858 with round balls for deer hunting. 25gr of 4f gives me 930fps...that is still slower than Pyrodex P but quite a bit faster than 3f which only yields 780fps. You can sure hear a difference in the muzzle report if you shoot it a lot.

I researched the use of 4f a lot and I even went over the testing data with a ballistics tech... his pressure testing did always show an increase in pressure but there was never any danger until the powder column reached +3" in length...When the powder column reaches 3 inches in length, bad things happen with 4ffff.