Not sure what caused it but he might want to locate some of the “polishing” bullets if they are available for this caliber.. they might be able to lap enough of these burrs out to help it shoot more consistently.
300 win mag
6.5/06
25/06
6.8 SPCll
22-250
223 in a bolt gun
5.56 in two different AR-15s with the Wylde chambering
All can shoot 3/4” or less at 100 yards. A few can cut ragged holes!
That’s what I love about reloading....the challenge of finding the magical load for that particular firearm!!
At sunrise and dusk you can lose a standard reticle in the shadows pretty easily..I’ve never lost the red reticle on either of my Burris scopes! I use them every time in low light or where there are dark backgrounds or shadows to hunt around...
Plus for a home defense setting you can’t beat an...
I re-barreled a tang safety Ruger m77 about 19 years ago...removed the shot out .280 barrel and replaced with a Shilen 26” .264 blank then chambered it for 6.5-06.
Got 3/4” groups right off the bat with the 139 gr Hornady at 100 yards! After playing with the loads a little they dropped to around...