I've been using 2F without issue , but plan to order some 3F on my next order any reason to get a pound of 4F also ? I don't shoot matches just plink in the back yard but do plan on hunting this fall and winter. I've read that 4F can soak up moisture on a damp humid day and cause issues, not so much with 2F or 3F. Just think with the 3F I could use as main charge if needed and get more use out of it rather than a pound of 4F I'd likely never get half way through.