10-09-2011, 06:42 PM
I have been having problems with not enough pressure to power gas system. Krieger has not done Grendel before so did not know that the size of the gas relief in the barrel should have been larger. I had to drill out myself just this week to fix. My thanks to everyone here for the help on fixing this problem as it works fine now.
I have been so busy fooling with this problem that I have not shot any groups per say as I was busy changing springs and buffers to see if I could get gas system operating without making gas hole bigger. I did however shoot about 20 rounds at 100 yrds and it made a hole the size of a quarter. I should be able to shoot some groups next weekend with the chronograph to see how it does at 200 yrds with different reloads and powders.
I have been so busy fooling with this problem that I have not shot any groups per say as I was busy changing springs and buffers to see if I could get gas system operating without making gas hole bigger. I did however shoot about 20 rounds at 100 yrds and it made a hole the size of a quarter. I should be able to shoot some groups next weekend with the chronograph to see how it does at 200 yrds with different reloads and powders.