" One grain more than your normal load or one grain over Max? I have a couple of 357 mag loads that you could easily add a grain to install stay under max. "
Over max.
The powder I used to use is no longer available so got some Tightgroup, since Im not familiar with it didnt know what kind of loads were proper. On the bottle it says 7.5 grains, but when I go to their website to the calculator it says 3.3 max. My Spear loading book didnt have the current powders listed.
On my Lee loader the last powder disk I used was .66cc (works out to 7.9grs), couldn't find any conversion charts at the time so didnt know how many grains, well the blast was strong enough were I had to hammer out the spent shells
Did a load of 50 with 5.1grs, so will check them out tomorrow. 3.3grs I think are meant for 38special.