I hadn't heard of Buffalo Bore and had to look them up.....

WOW 357 mag 180grain at 1500ft/sec

That same round produces 1800ft/sec in a 16" carbine

Here's a review:
http://www.gunblast.com/MilesFortis-...uffaloBore.htm
"Primers pushed into the firing pin bushings on the venerable import, and this tied up rotation."
Sounds like too much pressure to me though. They are probably exceeding the 40,000PSI in the mag loads if they are pushing primers and locking up a single action revolver.

They have fixed the problem and now use a different primer though.....kinda makes me skeptical. I keep seeing from different reviewers that you should only use their ammo in newer "only certain" revolvers and carbines.