I've shot a few dozen or so of the BB 180 .357 Mag's through K's and they are not that hard to control. Stiff yes, but I can easily keep 2 - 3 round groups within a few inches at 30 feet. This is the load I use when in Bear Country and hiking. Not setting out to hunt...... just for protection. I do not own a .44 Mag so I use a 3" M65 with these BB loads. THANKFULLY, I have never had a reason to test them out on Yogi, but have had the revolver drawn a few times as the Black Bears are less and less scared by humans it seems. They have gotten pretty darn close - closer than I like. When in the cabin, a 12 gauge loaded with slugs is what I rely on, but again, so far I have been able to scare them away - again, sometimes they are pretty "ballsy".
I do not know much about the Federal load, but I do trust the BB implicitly! At over 1300 feet per second from a 3" tube (1400 fps from a 4") and almost 800 foot pounds of energy I feel confident with it for Black Bears where I hang out. AGAIN, maybe it's NOT the ultimate Bear round - I got that, but the M65 is so convenient to carry it's always with me. Remember, the best gun to have is the one you HAVE ON YOU rather than having a "better gun" back at the cabin.