I have a yugoslav sks that i have chopped of at 18 1/2 inches on the barrel. I refaced the muzzle on a mill and used a counter sink to crown it. my question is, does the crown have to be perfectly sqaure with the muzzle or can it be alittle lopsided? I know that burrs on the crown can destroy accuracy but i cant find any info on this.
muzzle crown
- Thread starter DiN BLiX
- Start date
Well...
I'm certainly not an expert, but what I've been taught is that it doesn't matter how wide the crown is or what angle the bevel is at, just make sure that it's completely concentric. I would imagine that, if there's plenty of metal left, just redo it with a slightly larger countersink and take more care to keep it on center. But then I also recommend getting the opinion of someone who knows slightly more about what they’re talking about than me.
I'm certainly not an expert, but what I've been taught is that it doesn't matter how wide the crown is or what angle the bevel is at, just make sure that it's completely concentric. I would imagine that, if there's plenty of metal left, just redo it with a slightly larger countersink and take more care to keep it on center. But then I also recommend getting the opinion of someone who knows slightly more about what they’re talking about than me.
Brownell's has a tool to cut and square a crown. It uses a pilot in the bore to keep it square to the muzzle.
http://www.brownells.com
http://www.brownells.com
Listen to mtnboomer
I've never seen a "home grown" muzzle crowning procedure that really worked...I tried a couple my self....Save your money (and frustration) and get the proper tool from brownells...I bought the facing tool (to square the end) and the 11 degree cutter....after that I bought the pilots as I needed them, which are cheap...Use cutting oil (or I just use WD-40) and the cutters will last a long time...I've now done several rifles with them...Sooner or later you'll wanna do others, and the cost won't seem so high.
P.S. Shouldn't you be able to get a dead-square cut on a mill if you set it up right?
I've never seen a "home grown" muzzle crowning procedure that really worked...I tried a couple my self....Save your money (and frustration) and get the proper tool from brownells...I bought the facing tool (to square the end) and the 11 degree cutter....after that I bought the pilots as I needed them, which are cheap...Use cutting oil (or I just use WD-40) and the cutters will last a long time...I've now done several rifles with them...Sooner or later you'll wanna do others, and the cost won't seem so high.
P.S. Shouldn't you be able to get a dead-square cut on a mill if you set it up right?
Harry Bonar
New member
crown
Dear Shooter:
There are barrels too short to go in my lathe; I know it's not kosher but I use a file and square to get the muzzle as square as the eye can see. Since the barrel is tapered I know this isn't precise.
After I get that muzzle as square as I can see I use a trick an old gunsmith taught me (Dave Taylor of Little Hocking Ohio who has passed) and take a regular sharp countersink and put about two or three thicknesses of denim on the muzzle, keep the hand drill straight as I can and crank - it produces a clean crown! Try it and them sometimes to get rid of the burr I will lap it using a brass bar between the hands with some lapping compound on it. Does a pretty good job. I've seen "crowns" put the bullet 3 feet off!.
Hope it works; but the Brownells tool will do better.
Dear Shooter:
There are barrels too short to go in my lathe; I know it's not kosher but I use a file and square to get the muzzle as square as the eye can see. Since the barrel is tapered I know this isn't precise.
After I get that muzzle as square as I can see I use a trick an old gunsmith taught me (Dave Taylor of Little Hocking Ohio who has passed) and take a regular sharp countersink and put about two or three thicknesses of denim on the muzzle, keep the hand drill straight as I can and crank - it produces a clean crown! Try it and them sometimes to get rid of the burr I will lap it using a brass bar between the hands with some lapping compound on it. Does a pretty good job. I've seen "crowns" put the bullet 3 feet off!.
Hope it works; but the Brownells tool will do better.
Find a Smith
that has the hand crowning reamer setup. I use the Dave Manson setup. It produces a crown equal to or better than a lathe can. It only takes a few minutes, and I charge $30.00 because it is so quick and easy. Now the Manson reamer setup is about $400.00, and it will take some time for it to pay for it's self, but by giving a quality and economical service I get more jobs by word of mouth. Good Luck
that has the hand crowning reamer setup. I use the Dave Manson setup. It produces a crown equal to or better than a lathe can. It only takes a few minutes, and I charge $30.00 because it is so quick and easy. Now the Manson reamer setup is about $400.00, and it will take some time for it to pay for it's self, but by giving a quality and economical service I get more jobs by word of mouth. Good Luck