Took the Grendel to the range late this morning. What I consider high temperature and high humidity caused water to condense on the rifle, that is stored in air conditioning. The scope lenses also fogged, so I had to wait to start shooting.
I had 3 loads each with 2 different powders. The groups were inconsistent at best. Seems the Grendel is a bit finnicky about powder charge weights. A 0.3 grain difference can be significant. To make things worse, after getting home, I noticed that the linear compensator had loosened. Now I'll need to redo the experiment.
Oh well, a bad day at the range is better than a good day at work.
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