I reload 41 Mag with W231(light loads) and H110(heavy, max loads).
I've read H110/W296 are the same, just different lot numbers.
H110 is big boom with lots of smoke, used in magnum pistols, oddball rifle cartridges requiring a slow pistol powder and some shotgun, 28ga. I think. it measures better now since the Lee Auto Disk is coated with graphite from powder residue. Initially, it was inconsistent.
W231 is fast powder that has lots of load data for lots of calibers. Handy to have around.
I went with Remington JSP and Nosler JHP. They were easier to deal with than lead or lead with gas check.
Once I get some of my 45 ACP lead bullets downrange, I will get a .410 mold. There are more selections in .357 caliber, and more sources for .357 gas checks.
I didn't crimp initially and had no issues even with max loads in my revolver. For testing purposes, I am crimping (roll) now.