Best way to polish and hone your barrel crown.
- Thread starter rocknemo
- Start date
Best is dependent on skills and equipment, and the muzzle’s initial state. Please give some context and you will get useful answers.
With hand tools, it’s possible to get good results.
With hand tools, it’s possible to get good results.
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With hand tools, the hardest part is the square facing operation. The second operation is applying a bevel, and the brass screw method requires no alignment.
Before I had a lathe, the way I did the squaring was in a drill press. Breech end chucked up, muzzle end supported by a board with a hole drilled in it. Slowly bring in an emery wheel in a Dremel and kiss the muzzle gently to abrade down the high spots until it’s cutting for the full rotation. Then on to the brass screw to apply the bevel.
Before I had a lathe, the way I did the squaring was in a drill press. Breech end chucked up, muzzle end supported by a board with a hole drilled in it. Slowly bring in an emery wheel in a Dremel and kiss the muzzle gently to abrade down the high spots until it’s cutting for the full rotation. Then on to the brass screw to apply the bevel.
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you could probably rig up a jig with wood to use even a hand drill, most wiil chuck a breech end .. dont ask how i know lol .. theres a steep learning curve though really before you go hacking on a gun barrel .. i wouldnt experiment and learn on a 'good' gun .. mini lathes arnt too expensive these days either, again, just a steep learning curve ... barring all that, you can get some lapping grease in any grit you want, id say 400s about right .. put several knots in a piece of suitable size cord like paracord, grease it up with the compound and work that bad boy smooth ... guess you could finish off with the brass screw ..
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Rather than deal with Polish and hone....
I Alway re-cut my Barrels to a 11° Target Crown!
With a Lathe and proper tools.....
You start with a properly trued up flat barrel face.
Then I use the Mason Crown Cutting Tooling. The best I tool I have used!
This system consists of a cutter head with 3 serrated Carbide cutters.
And the correct fitting Bore arbor. The bore brush is to remove any chips when you remove the arbor....
The unique thing about this Crown cutter, it doesn't create "chips", It shaves thin threads of metal off!
The result is a Perfect 11° Target Crown. Clean, sharp with No polishing needed... unless you want to make it look Pretty...
I even do all my FX M3 barrel liners!!
Stuart
I Alway re-cut my Barrels to a 11° Target Crown!
With a Lathe and proper tools.....
You start with a properly trued up flat barrel face.
Then I use the Mason Crown Cutting Tooling. The best I tool I have used!
This system consists of a cutter head with 3 serrated Carbide cutters.
And the correct fitting Bore arbor. The bore brush is to remove any chips when you remove the arbor....
The unique thing about this Crown cutter, it doesn't create "chips", It shaves thin threads of metal off!
The result is a Perfect 11° Target Crown. Clean, sharp with No polishing needed... unless you want to make it look Pretty...
I even do all my FX M3 barrel liners!!
Stuart
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The Manson crown tooling is very nice. For perspective, it’s about the price of a mini lathe.
www.brownells.com
MANSON PRECISION PRECISION REAMERS MUZZLE CROWN REFACING KIT | Brownells
Hand driver with spring-loaded adapter provides a fast, no lathe way to cut a smooth, concentric muzzle crown on both rifle and handgun barrels for an immediate improvement in accuracy. Expandable pilots provide precise alignment of the facing cut...
www.brownells.com 
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Squared up end ... CRATEX point of @ 45* lightly touched off with edge of bore, direction reversed ... perfect deburr and light bevel created.
I generally create a large diameter yet shallow counter bore of perhaps .020" at muzzle to have actual bore recessed and somewhat protected.
I generally create a large diameter yet shallow counter bore of perhaps .020" at muzzle to have actual bore recessed and somewhat protected.
Upvote 0
True....The Manson crown tooling is very nice. For perspective, it’s about the price of a mini lathe.
MANSON PRECISION PRECISION REAMERS MUZZLE CROWN REFACING KIT | Brownells
Hand driver with spring-loaded adapter provides a fast, no lathe way to cut a smooth, concentric muzzle crown on both rifle and handgun barrels for an immediate improvement in accuracy. Expandable pilots provide precise alignment of the facing cut...
The Standard kit has a manual "Crank" handle assembly,
So You can Cut your Crown with the Barrel Mounted!!
Or just get the "Military rifle kit" setup to use a power screwdriver.....$140....with 1 arbor of your choice.
Stuart