I have one built on a Rem 700 action. 26" Ron Smith gain twist barrel. I get 2940 fps with 250 gr bullets, and 100 meter clover leafs with 250 gr Speers. I've been trying to find a premium bullet load that groups as well, but no luck so far. Not at that speed anyway. With Noslers I can get that kind of accuracy, but at 2800 fps, which kind of negates the whole purpose of the 340. One of my favorite hunting rifles, but it doesn't weigh much, and it kicks like a mule. - dan