My experience with two rifles in this caliber is that it is very easy to load for and very accurate. 60-63 gr of IMR4350, 215 primers, 140gr Accubond or Ballistic tips. 3200 fps, .25-.5 MOA out of my Winchester Model 70, Two of my buddies get the same results out of a Kimber and a Browning.
"Let us speak courteously, deal fairly, and keep ourselves armed and ready"-T. Roosevelt
Thank you bigngreen, I was doing some research on the site and came across your 270wsm 865yrd elk kill. Awesome to say the lest. I love the fact that there are not a lot of people shooting 270wsm for long-range. I would be the odd man out not using the "typical" cartridges. How many grains of retumbo are you using and what is your overall length. Can I seat the matrix bullets out far enough in a short action?