01-23-2022, 02:40 PM
Both bolts are type 2 bolts measuring .136" bolt face depth.
r.tenorio671
The lugs appearing to be different lengths is probably poor photography on my part. The PF lugs measure .275" the Aero .2735+- depending on lug measured, which is understandable considering damage.
Yes the tail of a type 2 bolt is longer to compensate for the deeper boltface and still use a standard AR 556/223 firing pin.
Yes the extractor appears to be shorter on the PF bolt. But as mention before, when I switch extractors the results are the same appearing short on the PF bolt. The extractors are identical on both bolts. It's the pivot pin location that's different between the two bolts.
The damage to the Aero bolt may have been my fault as mentioned before due to not enough headspace and binding the bolt. A soft bolt could be a possibility or contributing factor. I read that nitriding could possibly anneal a bolt because the temperature in the process is close to annealing temperatures. I'm not a metallurgist and don't know if this is true.
Both extractors have the same groove width and fit nicely to brass rims. I suppose I could measure the distance between the boltface and extractor claw, but at this point I would bet the farm that no matter which extractor used the PF bolt will measure .010" to .012" less/tighter than the Aero bolt. Also when inserting a case into the PF bolt by hand it is extremely tight with zero endplay, whereas the Aero bolt you can feel slight movement (my guess would be about .010"
r.tenorio671
The lugs appearing to be different lengths is probably poor photography on my part. The PF lugs measure .275" the Aero .2735+- depending on lug measured, which is understandable considering damage.
Yes the tail of a type 2 bolt is longer to compensate for the deeper boltface and still use a standard AR 556/223 firing pin.
Yes the extractor appears to be shorter on the PF bolt. But as mention before, when I switch extractors the results are the same appearing short on the PF bolt. The extractors are identical on both bolts. It's the pivot pin location that's different between the two bolts.
The damage to the Aero bolt may have been my fault as mentioned before due to not enough headspace and binding the bolt. A soft bolt could be a possibility or contributing factor. I read that nitriding could possibly anneal a bolt because the temperature in the process is close to annealing temperatures. I'm not a metallurgist and don't know if this is true.
Both extractors have the same groove width and fit nicely to brass rims. I suppose I could measure the distance between the boltface and extractor claw, but at this point I would bet the farm that no matter which extractor used the PF bolt will measure .010" to .012" less/tighter than the Aero bolt. Also when inserting a case into the PF bolt by hand it is extremely tight with zero endplay, whereas the Aero bolt you can feel slight movement (my guess would be about .010"