Finding cycling loads for the AR15 to make a ladder set

This is testing loads to make sure the powder and load cycle the gun. Then I can make a ladder round set to test the various loads for the best load to use. A good shooting cartridge is not any good if it will not cycle the gun.

Ladder set failure and making this cycle test is posted on my blog here.
https://archeryrob1.wordpress.com/2024/03/24/6-8-spc-ladder-failure-with-4227/