It didn’t have end shake when I gave it to him, so I’m assuming he’d have to cut the yoke barrel. My son bought a couple of 100 round packs of really hot .357 magnum rounds, and gave me one. I blasted through the entire bag as quickly as I could reload, and didn’t experience any thermal expansion. Just lots of laughs and hoots from the usual suspects at the range. I called the go between today, and told him NO END SHAKE. If it does have end shake, I have a yoke stretching tool. There aren’t many gunsmiths around here, at least none that I know of.