06-20-2015, 05:15 PM
Sighted this one in at 100 yds. yesterday. Temp was about 92 degrees. I used factory 123 AMAX. My batch was temperature sensitive. 
I got some extractor swiping and more concerning, primer cratering and flashing. The groups reflected this. I only shot 25 rounds with 4 measured groups. the 4th group was an encouraging .516 MOA. Once I got the gas adjusted, function was perfect and the last group reflected a gun that is happy gassed. As you would expect the DPMS TiN cam pin is pretty well scuffed down to the uncoated metal. Guess it's a good thing these aren't generally available anymore.
The barrel cleaned up easily and the SS 3X-15 moved to zero and the mils in the reticle were accurate to the turrets. I also had my Stoner barreled build along and the Nikon 4.5X-14 mil dot side focus was actually a bit brighter and clearer even with a 1" tube; better coatings I imagine.
Where I live temps will not get lower than the '90's until October, so I am going to work up some hand loads to deal with the temperatures and hopefully support my accuracy desires.
I got some extractor swiping and more concerning, primer cratering and flashing. The groups reflected this. I only shot 25 rounds with 4 measured groups. the 4th group was an encouraging .516 MOA. Once I got the gas adjusted, function was perfect and the last group reflected a gun that is happy gassed. As you would expect the DPMS TiN cam pin is pretty well scuffed down to the uncoated metal. Guess it's a good thing these aren't generally available anymore.The barrel cleaned up easily and the SS 3X-15 moved to zero and the mils in the reticle were accurate to the turrets. I also had my Stoner barreled build along and the Nikon 4.5X-14 mil dot side focus was actually a bit brighter and clearer even with a 1" tube; better coatings I imagine.
Where I live temps will not get lower than the '90's until October, so I am going to work up some hand loads to deal with the temperatures and hopefully support my accuracy desires.