True enough! I've ruined lots of meat with the .270 Winchester over the years. I don't understand why most jacketed bullets for the .270 are so frangable, it isn't as though .277" bullets are used over a wide variety of velocity thresholds as is true with the 7mm's and .30 calibers. The type of bullets available for the .270 is probably why Elmer Keith called it a great coyote rifle when it first came out!
However, things have gotten much better for the .270 in recent years with the introduction of the Barnes X bullet. It works superbly in the .270 Winchester, is very accurate when loaded properly and performs flawlessly on game. No more bloodshot meat like with the other conventional bullets.
If you gun copper fouls with the Barnes X bullet, fire-lap it a few loads, then polish the bore and your fouling problems will dissappear! By the way, I don't recommend the moly-treated bullets.
Hope this helps in your bullet selection for the .270!
God Bless,
Marshall