When i look up loading data, i find low, and high powder weights, along with FPS. So my question is, Are the pressures and FPS data linear with diffrent weight of the powder?
I do not have a conograph, yet, would like to load a few sub-sonic for the grandsons to get accustom to shooting lever action.

Thanks for all the suggestion. My rifle is a Win 92 trapper (modern Japan). The bullet is 452 LRFN at 215 wt. Rolled crimp (mid to heavy) I have a William's sight (peep). Our three gun is a homemade shoot, no fancy names, no fancy apparial, rule number 1, no rules, rule number 2, see rule number 1, ...

Have used my winchester 45 lever for cowboy three gun for a couple of years, and just started long range (100 meters)targets.am using 7 grains Unique, 230 lrfn, wlp primer. Any advice for smaller groups (5.5 inches)?