How much powder?

[EncoreBilly]

Try 100 gr first with the 250 shockwave,then see what it does with 110.
This year I shot 300gr shockwave with 2-30's and a 50 in pellet form and was very pleased.If I where shooting 250 in mine I would use two 50's and see what you got.
By the way Hornaday SST's the same bullet,only difference the Shockwave tip a little longer .005,but shoot the same poi.
I have used the 300 gr the last two years, 4 deer,and liked the knock down performence better than the 250.Still can make the 150yd shot with out much drop.
And yes rimshot can really drag out a can of 777.