I bought a 22-250 for a pretty good price knowing the crown didnt look the greatest. I was wondering If any one has had any luck with the hand crowning tools you can buy at midway or brownells. this is a heavy barrel and I would like a 11 degree target crown. I havent loaded any thing up for the rifle yet and plan on doing that before I do anything. here is a pic.
there is one smith I would consitter taking this to in the area but he is swamped with stuff and would take awile.

shoot it as-is....see how it shoots.....it may or may not need repair.

quote:

Originally posted by vapodog:
shoot it as-is....see how it shoots.....it may or may not need repair.

JJ, I would shoot this rifle first to establish it's current state of affairs. Then:

I would get a round headed brass screw and some 600 wet or dry paper, and some oil. Pressing with a cordless drill the 600 paper will remove the burrs which are visable in your picture. If not the 600 paper, lapping compound on the brass screw will work as well. For myself, years ago I acquired a piece of 1/4 inch round stone with a ball like end. Putting it in a cordless drill and lightly turning with careful attention to alignment can make a new rifle out of this crown. Or you can be a gentleman and spend the money, or the time and money and get the same results!

Good shooting.

I use a round headed screw and auto valve grinding compound with a cordless drill to clean up crowns. Just put a wad of paper towel down the barrel, to keep grit from going down, and put the muzzle up. About a one pound pressure down, and a slow speed, while rocking the back of the drill around in a 2" circle, and stop and clean to see how the ends of the lands look every miniute. 2 shots of this will do it-use a screw with a head about 2x bore diameter. I used this on a 308 Palma rifle that shoots 3/8" groups at 100 yds, and has cleaned the 800 and 900 yd targets. I also have used the Brownells 1/2" dia 79 deg crowning tool on target rifles, to recess the crown-just clean chips out every 5 turns, and use cutting oil.

I would have it done,by a professional gunsmith. As anyone can see its got two dinks in it already that can effect accuracy.I would have a recessed target crown or a 11 degree as you stated. IMHO van

If you missed the recent posts on the effect of damage to the crown of a 22 cal, I suspect Saeed could dig them up for you. He has data on the effect on group size from using a hand tool to remove crown damage.

I suggest you wait for his next set of data (read this) before you begin.

https://forums.accuratereloading.com/eve/forums/a/tpc/f/9411043/m/234100006