RE: Triple 7: powder or pellets???
You are probably pretty close on 85 grs of loose being equal to 100 grs of pellet 777. A 100gr load, of loose 777, behind a 300gr Shockwave should be pleanty, a 120 gr load would be a max load in your encore. The advantage to loose powder is that you could work up to a 120gr load, in increments of 5grs, to get the best accuracy. The loose powder also ignites a little easier than pellets and it is quite alot cheeper per shot.