I've used it to great effect on deer in the past where legal. Shot placement is a must with this critter.
Sure makes for lots of fun for smaller shooters when recoil and blast may present an issue. Several customers have used the 70 and 75g for hunting, I prefer the 87g SP myself, but I almost always opt for the heavier bullets regardless of caliber.
.357 mag brass is easy to re-form, just anneal it and run it into a .30 Mauser, 7.62x25, or .32-20 die first to start the necking down, then into the FL die for the final.