The first deer I ever shot with a bow was an old doe, and it was with the famed Magnus 4-blade Stinger. Lots of guys on the web praise the heck out of this broadhead - I'm not one of them. I didn't make a good shot; it was too high, and it didn't penetrate worth a darn. The deer ran off into the woods, bent the crap out of my then aluminum arrow, and snapped the ferrule of that Stinger clean in half.[:'(] I threw it out, even though Magnus says if one ever breaks, they'll send you free BHs. But, who wants free, crappy broadheads? The deer lived, and I felt like a tiny, little piece of turd for wounding her.[

] Since then, I've upgraded the bow, upgraded my skills with the bow, switched to carbon (Axis) arrows, and changed broadheads repeatedly.
I haven't tried Steel Force yet, but I like the looks of them. The best COC I've found thus far are American Broadhead's Sonics and Liberty heads. The Sonics are just nasty sharp out of the package and accurate as can be, but they're small - they don't inspire a lot of confidence IMO - even though I've seen firsthand that they can do an excellent job. The Liberty head is basically the same BH as the Sonic but larger and less accurate, though still a darn good BH. (However, I'm still planning to switch to Slick Tricks next season.

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You can also check out 5shot's broadhead review website, broadheadtests.com.