The 85 grain Sierra BTHP has always been an accurate bullet for me in the 243, 6mm, and 6-284. I have shot deer with it, but no longer use it for that purpose, after I had 2 failures to penetrate with it and 2 more with its 90 grain .257" brother. They are a little, well actually a lot, on the fragile side, but still a great bullet for shooting varmints, if you're not planning to keep the pelts, and paper. A buddy of mine shot a nice bobcat with this bullet and nearly tore it in half, but 'cats are pretty fragile too.
Combined with Winchester/Olin brass, Remington LR primers, and H4831, the 85 grain Sierra BTHP is a consistant MOA shooter in the faux CDL-SF 243 parts gun that I put together in 2011.
Jeff
