RE: Winchester Supreme 140 gr Fail Safe
They work fine on deer. My hunting partner used the 160 CT Failsafe for deer to moose in his 280 rem, never witnessed any problems on the game end of things. I have used them for elk and moose with great results. The only problems I have found is they seem to be bore picky, some love em and some hate em'.
Why they are blowing them out is because they have been discontinued and haven't been produced by Nosler for awhile now, just depleting stock. If you love them you may have troubles finding them. FYI, part of the Combined Technologies lineup, a partnership between Olin(Winchester) and Nosler. Nosler makes the: Failsafe, Accubond and Ballistic Tip bullet to Winchesters specs. Winchester produces the loaded cartridgesusing the CT bullets.
Ihave not been able to figure outwho is producing the XP3 bullet for Winchester, but it appears to be the Failsafe successor as mentioned.
Can't go wrong with that price though!!