Some of my own favorite plinking loads are 148 grain wadcutters over Unique or 231 and 158 grain LSWC over 231, Unique or 2400 .
I read your question about 296 last night so I looked through my notebooks. I don't even like 296 for full power magnum loads. It seems to produce too much flash and bang compared to other powders. I should show you the underside of the top strap on my GP-100. There is clear frame cutting from my experiments with 296 during my misspent youth.
Жить стало лучше, товарищи. Жить стало веселее.
Life has improved, comrades. Life has become more joyous!
I.V.S, 1935