On that 257, you say you only got 2-3 inch groups? Where they handloads? I worked at a sporting goods shop once and we sold a Rem bdl .270, that is what it said on the bbl, but was actually chambered in 3006! The guy shot 6 boxes of shells before he wanted us to ship it back. Just thought it was kinda funny, might have been your prob too.

Could have been a bad lawsuit for Rem if something would have happened to that poor sap.
NRA Life member since 1991!
Why am I sittin here on this stupid PC when I could be huntin'