I had a 31" stainless supermatch heavy target barrel from Pacnor in 338 edge installed on a sleeved remington 700 for 50 shots. I then sold everything but the barrel to a friend. I sent the barrel back to Chris @ Pacnor and he re-contoured it, choped it to 30", re-crowned and rechambered it, and threaded it for my Ruger m77 mk2 stainless. Since the barrel was his he did the work and the shipping for $50.
It shot in the.3's with 300 gr. Sierra Mk new, and it shot in the .3's when I got it back. Different charge af Retumbo is all that changed.
That barrel is chambered in 338 Edge and has exactly 2,186 rounds through it, and it still shoots in the .4's. Last 5 shot group I shot was .447" @ 100 yds.
I'm sure some barrels won't take the stress, but this one was uneffected.
Thats just a few more reasons I am a Loyal customer. I only shoot Pacnor and have for 20 years.