I know that this is a common problem with heavy recoiling single actions. I took my new SBH 10.5" out yesterday to shoot it for the first time. The base pin would jump out and lock up the cylinder every couple of rounds if I didn't check it. With out resorting to the Belt Mountain alternative, I was wondering if anyone can give feedback on the Wolff extra power spring. These are pretty inexpensive and if they fix the problem, that would make my day.