I have been using a 270 on deer for a long time also. I use the 130 Federal hi shoks....I almost always get pass thrus but what I dont get is instant death like you are getting. Dunno if I would complain bout that or not..lol. Anytime the bullet doesnt come out that means it gave 100% of its energy to the vitals on that deer. I dunno if its typical with those bullets but it sound slike a good deal. I get meat damage galore also....

Theres a lot of 270 hunters on here I'm sure you'll get some good opinions.