I don't believe the 270 win in that letter is legit, it claims a 8.8% and a 7.8% gain, I guess I will assume the 8.8% was likely with 150 grain bullets,

if you are getting 3100 from a 130 from your regular 270 win, this article claims you should be getting 3341fps from your acklyized 270, how many of you guys wanna call bull$hit on that, thats faster than the fasted 270 weatherby mag load I have listed