I've had my reloading setup now for about 4-5 yrs but really been getting more into it as a hobby the last couple of years. I've read on here higher velocity in general means higher pressure. I've also read that loading to the lands increases pressure and loading further off the lands will reduce pressure.
I generally load to the lands when possible which leads me to loads that are longer than book length. I've noticed that on these loads with less bullet seated into the cartridge, I seem to need more powder to get close to book velocities. When I find a good load at a reasonable velocity, I start messing with seating depth to see if I can improve on it. Since I'm already at the lands, the only direction to go is seating the bullet deeper into the case. I'm usually seeing my velocity go up slightly with each load as I seat it deeper, which would lead me to think I'm getting higher pressure.
However, as I seat it deeper in the case, the bullet is getting farther from the lands. This, according to my reading, should be decreasing pressure and therefore velocity.
Am I reading something wrong somewhere or what? What increases pressure more - seating deeper into the case or further out to the lands?
I generally load to the lands when possible which leads me to loads that are longer than book length. I've noticed that on these loads with less bullet seated into the cartridge, I seem to need more powder to get close to book velocities. When I find a good load at a reasonable velocity, I start messing with seating depth to see if I can improve on it. Since I'm already at the lands, the only direction to go is seating the bullet deeper into the case. I'm usually seeing my velocity go up slightly with each load as I seat it deeper, which would lead me to think I'm getting higher pressure.
However, as I seat it deeper in the case, the bullet is getting farther from the lands. This, according to my reading, should be decreasing pressure and therefore velocity.
Am I reading something wrong somewhere or what? What increases pressure more - seating deeper into the case or further out to the lands?