Free: Contests & Raffles.
Variance of 125fps "to me" indicates a powder charge issue. Until you can consistently get fps under control, I would weigh each charge individually on a small digital scale after calibrating it. Load 5, fire and confirm.If using standard dies and basic reloading technique neck tension should all be the same and unless you have a loose seating stem, seating depth should be uniform enough.Also, Im assuming you are not mixing brass........
How uniformly accurate is your seating depth? To far from or to tight to the lands may be an issue if your seating depth is not consistent. I'm no expert so just a thought. Neck tension maybe....to much or to little?