Cat Whisperer,
The reason I mentioned it was because since I started casting way back when I saw articles saying frosted bullets weren't a good thing.I never saw an explanation as to why.
I see in my Lyman 47th reloading hand book that Frosted bullets, or bullets that break apart easily, are sign of a mould or alloy (or both ) that are too hot. This I already knew, but I was the first time I have seen it in print as to why frosted bullets aren't as good as the ones that aren't frosted. Far be it from me to say that they aren't shootable, as I have yet to hear a paper target or aluminum can complain about what it was hit with, but I have seen where a frangible bullet isn't the best to use on game, as there is the chance of it breaking apart into small fragments and not giving a quick or humane kill. My son watched and commented on some I had loaded up for my .45Colt. We were shooting at 6inch stainless steel plates at the bottom of a clay pit. When hit with his 480 the plates caved in some, but there wasn't a huge spray of lead. When hit with my bullets, there was visible reaction to the overhanging trees, which were about 40 feet above the targets.