Post by "DoubleAction" on Jan 18, 2007 9:12:34 GMT -5
I first mentioned having feeding problems with the flat nose fmj .40 S&W with the Sig Sauers. This problem was echoed by others I know, of which I've also seen at the range. Chuck Taylor mentioned this problem in an article he wrote several years ago but he blamed it on the magazine. I examined the flat nose .40 S&W bullet's path into the fully supported chamber of the Sig Sauer and found the bullet binding at the top of the chamber as it was being fed.
I've seen this occur in the P-229 and the P-226. I've also seen binding issues with my P-220 in 38 Super. I attempted to correct the problem by lightly polishing the bottom edge of the chamber and the ramp to smooth the feeding. I avoiding removing any metal, but rather to smooth the feed of the .40 S&W bullet and the very tight chamber.
Taking the P-226 to the range, after having smoothed it up, I experienced no feeding malfunctions through 100 rds of Winchester and Aquila flat nose fmj bullets. These two cartridges were the ones which we found to be notorious for feeding malfunctions in the Sig Sauers. After 200 rds. the ramp was still very clean, which led me to believe the polishing also reduced the accumulation of fouling.
I've seen this occur in the P-229 and the P-226. I've also seen binding issues with my P-220 in 38 Super. I attempted to correct the problem by lightly polishing the bottom edge of the chamber and the ramp to smooth the feeding. I avoiding removing any metal, but rather to smooth the feed of the .40 S&W bullet and the very tight chamber.
Taking the P-226 to the range, after having smoothed it up, I experienced no feeding malfunctions through 100 rds of Winchester and Aquila flat nose fmj bullets. These two cartridges were the ones which we found to be notorious for feeding malfunctions in the Sig Sauers. After 200 rds. the ramp was still very clean, which led me to believe the polishing also reduced the accumulation of fouling.
