Seating Depth Control
Spud says.."Seating depth is a critical part of load development; I tend to use a standard seating depth for initial load development; I'll sort the powder load first. Then, once I'm happy with my results, I will tweak seating depth to see if I can further tighten the groups and bring the extreme spreads down. If you use it as a multi-shot rifle with a magazine instead of a single shot, you must also remember the length of your loaded round."