i have a 28" sheiin barrel. there is no crown on the barrel. would it help accuracy to have the barrel shaved just enough to make a target crown. the gun will be used in f-class
Gunsmithing cutting new crown
- Thread starter 42769vette
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Re: cutting new crown
Face it off square. Then set it in .050 to .070" and make it a recessed bore by opening it out about half the diameter of the barrel.
If the barrel has the factory ends left on it, you probably need to trim at least an inch from the muzzle end. I prefer 2".
Face it off square. Then set it in .050 to .070" and make it a recessed bore by opening it out about half the diameter of the barrel.
If the barrel has the factory ends left on it, you probably need to trim at least an inch from the muzzle end. I prefer 2".
Re: cutting new crown
If that is a Shilen 28" blank it's meant to be a 26" finished barrel.
A recessed target crown like "Victor" said or even an 11 degree will work. Doesn’t really matter for accuracy as long as the crown is cut straight to the bore and is burr free. All the other cutting is to get the crown set back to better protect it.
If that is a Shilen 28" blank it's meant to be a 26" finished barrel.
A recessed target crown like "Victor" said or even an 11 degree will work. Doesn’t really matter for accuracy as long as the crown is cut straight to the bore and is burr free. All the other cutting is to get the crown set back to better protect it.
Re: cutting new crown
so is there any point in messing with it. i bought the gun used and it shoots great but it could always shoot better
so is there any point in messing with it. i bought the gun used and it shoots great but it could always shoot better
Re: cutting new crown
I mis-understood. I thought it was a new barrel. Most new barrels have to be trimmed a bit from both ends to make sure the areas where the lapping rods may have rubbed.
Randy is right about the 11 degree crown. A lot of benchrest shooters use it. It's on a few of my barrels.
I mis-understood. I thought it was a new barrel. Most new barrels have to be trimmed a bit from both ends to make sure the areas where the lapping rods may have rubbed.
Randy is right about the 11 degree crown. A lot of benchrest shooters use it. It's on a few of my barrels.
Re: cutting new crown
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 42769vette</div><div class="ubbcode-body">so is there any point in messing with it. i bought the gun used and it shoots great but it could always shoot better </div></div>
It couldn't hurt. Crowns can get worn and simply re-cutting them can bring a rifle back to life.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 42769vette</div><div class="ubbcode-body">so is there any point in messing with it. i bought the gun used and it shoots great but it could always shoot better </div></div>
It couldn't hurt. Crowns can get worn and simply re-cutting them can bring a rifle back to life.
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