I was reading some of the archive threads and a member mentioned a couple of procedures he used to improve his revolver accuracy. He mentioned "lapping the crown" and "opening up the forceing cone." I'm not familiar with either one of these procedures and was wondering if someone could enlighten me as to exactly what these procedures are and how they serve to improve accuracy. Thanks a lot. Fleiger
Accuracy Modifications
- Thread starter fleiger
- Start date
Sir William
New member
There are some simple things that you can do or pay to have done that improve servicibility, durability and accuracy. The cutting of the lead-in or forcing cone of the barrel to 11 degrees helps greatly. Imagine a funnel opening versus straight wall tubing. The added cleaning of the end of the barrel to remove cutting debris is the lapping of the bore. Some people swear by a 11 degree cone shaping at the crown, it looks nice. The additional step of slugging your bore to determine what bullet size to use can help. Ruger has had major issues with oversized bores. The other step related to this is to ream the cylinder throats to better match the bore size and remove cutting debris. I also see many revolvers with relieved chamber shoulders for easier loading. I have one friend who went an extra LEAP and replaced his barrels for improved accuracy.
Before embarking on these adventuresome changes, I remember 3 things;
1. Most handguns are plenty accurate with the right ammo loads. What works in my S&W M-999 may not work as well in yours.
2. Before blaming the gun for accuracy problems, check the nut that holds he grips.
Get a pistol rest and shoot from that first, to eliminate "user error".
3. With adjustable sights be sure to take the time to align them to your favorite load. If you change loads check your point of impact.
1. Most handguns are plenty accurate with the right ammo loads. What works in my S&W M-999 may not work as well in yours.
2. Before blaming the gun for accuracy problems, check the nut that holds he grips.
Get a pistol rest and shoot from that first, to eliminate "user error". 3. With adjustable sights be sure to take the time to align them to your favorite load. If you change loads check your point of impact.