Macchina
Member
- Joined
- Nov 14, 2006
- Messages
- 998
I have a Ruger KLCR (357) with less than 100 rounds through it. Cleaning it today I noticed a significant amount of forcing cone erosion on the top of the cone only. The bottom of the cone was completely perfect.
I have shot mostly mid-range SWC lead loads from this gun with the exception of 10 H110 loads to get some chronograph readings. All bullets have been 158 grains. I have shot hundreds of each of these rounds through my SP101 with zero damage to its forcing cone. As you can see below the damage is only to the top 40% of the cone, absolutely no abrasion has occurred to the bottom 60%. NOTE: I know this is not lead buildup. I have scratched at it with hardened tools and did not remove any lead. Also, it appears to clearly be a concave depression where the chamfer used to be.
This is really frustrating. What would cause damage just to the top of the cone? Misaligned cylinders?
I have shot mostly mid-range SWC lead loads from this gun with the exception of 10 H110 loads to get some chronograph readings. All bullets have been 158 grains. I have shot hundreds of each of these rounds through my SP101 with zero damage to its forcing cone. As you can see below the damage is only to the top 40% of the cone, absolutely no abrasion has occurred to the bottom 60%. NOTE: I know this is not lead buildup. I have scratched at it with hardened tools and did not remove any lead. Also, it appears to clearly be a concave depression where the chamfer used to be.
This is really frustrating. What would cause damage just to the top of the cone? Misaligned cylinders?
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