I have one of the original Fibermarks with the solid recoil pad, and that thing will smack you. When hunting you don't even notice it though. For the bench I bought a Past shoulder pad and it makes a HUGE difference. I can shoot a box or more at a session and not have any ill affects. Prior...
Ross Seyfried wrote an article on shooting the #1 in fast twist 22-250 IIRC at 600-800 yards. He used Scenar or Sciracco 80 Grain bullets and was getting like a 3" group. If I can find it I'll let you know.
Do you like them for general hunting or just for steep mountain stuff? I'll be looking for a new pair soon, but we don't always hunt in the steep stuff and I can't really swing for 2 pair.
Daniel Defense M4 Profile, 16", 1:7, Chrome Lined Barrel, w/Pinned, Low Profile, Gas Block. This barrel is UNFIRED.
If you would like an Upper, BCG and Flash Hider, I do have extras available.
$325
Lapping it incorrectly will ruin it for sure - have someone who knows how to do it take care of it if you want it done.
Of course, a lapped barrel will benefit from break in, but a straight factory barrel is a waste of time.
The Super Grades are now made in Portugal...if that matters to you. I just found an NOS Featherweight that is Made in USA, so there are still a few out there if you look around.