It locks up loose on my Sportster frame. I can fit it, but I don’t like fitting loose locking barrels. Too tight is ok. It locks up perfectly on one of my centerfire rifle frames. I can rechamber to 17 Ackley Hornet, rechamber to 17 Hornady Hornet, rechamber to 17 MACH 2. Or just put the barrel up for sale. what do you think? FWIW, I bought a little bolt action 17 HMR, so while there is nothing wrong with a spare rifle in 17 HMR, I really don’t need it. ***i did intend to add the sell it option as a poll option, but I touched something and inadvertently posted. Can’t edit the poll questions ???