Yesterday, 05:34 PM
In a previous post I stated that I did not try to find the lands so I did the measurement and came up with 1.633" CBTO. I went to record this in my notes and found that I did do the measurement before and the two results were within .002". OAL is 2.185" at 1.570" CBTO. Notes also stated I did the original ladder test at 1.610" and settled on 29.3 gn Lever. From there my best groups started showing up at 1.570" and slightly shorter. Pressure signs showed up with the Alpha brass, never with the Hornady brass. I incorporated a Lee factory crimp die in my reloading process and dropped my powder changes for new ladder testing. I did not go back to the original 1.61-" CBTO for the testing. I can do that to see if there is any group improvement.
I also did some testing with a carbine buffer and spring in my rifle. There were no ejection pattern changes using the carbine buffer/spring verses the JP silent capture spring. JP standard device has 2.9 oz buffer mass. JP customer service indicated they do not worry about ejection patterns if the rifle operates reliably.
I also did some testing with a carbine buffer and spring in my rifle. There were no ejection pattern changes using the carbine buffer/spring verses the JP silent capture spring. JP standard device has 2.9 oz buffer mass. JP customer service indicated they do not worry about ejection patterns if the rifle operates reliably.