The 44 Spl. loads I made for fun shooting my CA Bulldogs (had a pair) years back were more like 44American; IIRC, about 600-650fps with a 215-240ish cast bullet. I had 750ish fps Ly429421's for social work and, thankfully, never had to use such, though I have no doubt about 'em. The hole in the end of that barrel was.....intimidating.