I've read that the E-Tip may open easier than the TTSX. I use both (120 gr) in my 26 Nosler and at that speed they both are pretty expansive and tend to mess up stuff.
They're both very accurate in that rifle (M-700, Shilen #2 26" SS barrel).
At 270 Wby speeds they should do very well.
You are correct, shopping at SPS will often yield prices on E-Tips better than TTSX's. Just get a good supply when you can.
I don't use these bullets at conventional speeds, like 2,800 or so. I use softer C&C's in those rounds, as I usually chest shoot WT's to save meat and like more expansion.
Hard to beat monos at high speed.
DF
