jonbearman
New member
I use 24.0 grains of h335 and 50 grain remington plhp's and get 1/4" groups. If you need more h335,hi-techammo.com has surplus for 99.00 for 8#'s . If you can do a buy with a few friends and buy 4 canisters they will waive the haz mat.It works great and clean burning. R-15 is a very dirty powder and is more suited for bolt guns.