I have a 6 br , stiller viper action, .262 neck, 20" barrel, 1 in 13 twist, 4 groove cut rifling Mark Chanlyn barrel, jewel trigger, stock by Speedy Gonzales gun shoots great. the problem I am having is every now and then the extractor will not extract a fired case. have tried 0 shoulder set back, to .002 set back,and still the same intermittent problem. if I remove the bolt and manually insert the case into the extractor the problem goes away. no marks on case in that area, have 100 rounds fired through it. any thoughts on this, thanks









