They will work but not in 41 mag cases due to the short FA cylinder. I used 41 Special length cases and H110, limited powder room, only got 1097 fps with them. Shot 1/2" groups at 25 yards, never tried any longer ranges, built the load for hog hunting, didn't get a shot that year. Expansion?
? Velocity is pretty low, then again it is already 41 caliber
Side note.....I used the same bullet in my 411 JDJ Contender at 1900 fps on a hog this past summer, bullet didn't survive very well on the quartering shoulder shot at 20 yards
Gunner