I can remember years ago, no one shot 3f powder except in small bore rifles and pistols. There used to even be a rumor that shooting 3f in large bore rifles could damage the bore. Which I never did believe.

The advantages of shooting 3f is use it only if your accuracy is better then when you shoot 2f. I have rifles that tend to shoot better with 3f powder and then again just the opposite. So try the 3f and see how it works. You will still have fouling. But there is some that really like 3f.