Originally Posted by dud
what kind of crown would you put on a 2506ai,10 twist,27 inch barrel?gun will be mostly used off bench for 100 gr and under bullets under 500 yd shots at groundhogs.does it matter
One of these:
What is important about the crown is to have the plane of the crown at the muzzle perfectly orthogonal to the bore centerline at the muzzle, and have the edge of the exit hole perfectly symmetrical. For me that is easiest to do with a recessed target crown like this one. Crisp square edge, no bevel is easiest way for me to make sure all is symmetrical.
The only reason for the recess it to provide some measure of protection from damage. Other than that if it was a perfectly flat crown it would work fine.
The 11 degree crowns with a crisp edge work as well, they are just harder to make, so I do it this way.