by SCJ429 » 13 Dec 2018, 6:15 pm
Unless Aliant powder is dirt cheap where you are I would stick with ADI, tons of data and we make some of the best powder in the world, apart from Finland.
You will find that 2209 or 4350 has a similar burn rate to RL17. You can use this data as a starting point, then add powder until you get the speed you want. Something over 3,300 fps should be easy for you.
125 is very light for that boomer of yours, I would stick with 180s or 200+ which is where the WSM excels. Give the 125 to a mate with a 308 or use them for plinking at rabbits.