JeffCSR Posted February 16, 2019 Share Posted February 16, 2019 Following the old Burwell trigger job, how do factory sears hold up as far as re profiling where they engage the striker? Are they of equal hardness throughout or case hardened to a particular depth? This is a 9mm Pro series BTW I ask here because you guys would be the ones who shoot the most Quote Link to comment Share on other sites More sharing options...
Bench Posted February 16, 2019 Share Posted February 16, 2019 Approaching 1K rounds after completing the Burwell job and no issues at all. That being said I was careful to polish the sear and not remove 'heavy' amounts of metal prior to polishing since the measurements described were kind of vague... Quote Link to comment Share on other sites More sharing options...
SteelCityShooter Posted February 17, 2019 Share Posted February 17, 2019 Case hardening was used back in the days when high strength steel alloys that could be effectively heat treated were not available and surface (case) hardening was the best available technique. Now much better steels that can be through hardened are used and true case hardening is only done for appearance. Quote Link to comment Share on other sites More sharing options...
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