Undersized Precision bullets in oversized Knight bores is the reason for your bad luck.
Yep, you have said this three other times when I posted my results about PR. I heard it the first time and slugged and used a subbase. Do you know know what a subbase is? And I slugged, and your wrong again. Please let it go. I have my experienced opinion as you do. And everyone is entitled to thiers. You post your results, and I will post mine. How does that sound?