I currently reload 135 grain Sierra Matchkings (HPBT) in my 270 win. They are a great round, I haven't killed anything with them yet but have taken them out to the range for testing. I compared the SMK to 130 Ballistic silvertip and they had about the same results on a SunnyD bottle filled with water at 200 yards. They both blew the bottle skyward and both bottles were found 2-3 feet away from the spot they were initially sitting. Both bottles were shredded, still one peice, but were completely torn apart. I like the SMK more because a higher B.C. for longrange shooting.