Without digging through my ammo cans, I would be willing to bet that it's MagSafe. If I
remember correctly, I have seen some MagSafe marked as the OP described, although
they also use a case marked with two stars, with a line going from one star to the
other. I just checked the ammo in my yard gun and it has the "star" marked cases.
I can't say how effective MagSafe would be on people, especially during a Michigan
winter when people are wearing heavy clothing, but can say that it is
extremely
effective when it comes to dealing with "critters" like 'Coons & 'Possums.
I'm finding that one shot of MagSafe .32 H&R Magnum is more
than a match for a 'Possum, which are usually "lead sponges."
I've also had impressive results, on critters, using MagSafe 9mm, .45 Colt & .45 acp.
In one case, where I shot a 'Coon off of our roof using a Glock 26 (9mm), I had to
shoot high so as not to poke a hole in the roof, and even with bad shot placement
it only took one shot. In addition, that 'Coon was the largest I've ever seen, and
I trapped the buggers for a number of years. It was like a freak of nature!
