I've found that the JES rebores do foul. I cleaned mine very well then did the Dyna Bore Coat treatment. The more I shoot and clean it, the less it fouls. And I'm using a Hawkeye borescope.
They're not gonna group like a new Shilen, but do pretty well. I'm pleased with how well mine shoots.
DF
Well maybe, maybe not....
This gun, even though it's a 12 twist, has always preferred lighter bullets. I have no idea why, just go with what it shows me.
The 160 CEB Raptor was a bonus. I'm gonna post pictures of the gun with the Trijicon 3-9x40 Accupoint in horizontal Warne rings. I was thinking I was going to have to shim a base, as I was near the edge of the scope adjustment when I found the right zero. But, it's working and I'm not gonna worry about it. And, even at the edge of adjustment range, the Trijicon sight picture and glass clarity is perfect. So, if it ain't broke, don't fix it.
DF
