Darkhorse
Senior Member
Sometimes it’s hard to leave well enough alone ;-) I think you’re right about the node... and maybe turning too many knobs. I’ve been shooting with a Harris bipod and cheaper Caldwell rear bag. After swapping emails with the guy at Berger I’ve got some ideas on trying a few things. I was loading light on H4831 and heavy on IMR4350. I bartered first three more boxes of VLDs so have plenty to play with.
This is the short version and just a recommendation. It's good to learn to shoot well with shooting aids such as the bipod. But I personally never use them for load testing, I use a cheap front rest with a small sandbag for the front and a bag designed for the rear. The idea is to find what gives you a perfect steady hold during the entire process, this way your only testing the load, not you as a shooter.
When you go to shoot try to be sure your barrel is parallel to the ground and not pointing up or down. Bag the front and rear. With an empty chamber get into firing position on your bags and aim at the center. Now squeeze one off. If the crosshairs move then work on your rests and technique until the crosshairs stay on target when you squeeze the trigger.