I have a couple of nice loads for the 300SST/SW. It shoots nearly the same accuracy using 100gr loose 777 and 130gr of Pyro pellets with the latter being about 170fps faster at around 1950. Using a 3" high at 100 yards sight in the 130gr load is down about 5" at 200, the 100gr load is down about 7.5". Typical groups at 200 are 4" or less.

I hope that helps.