I was just out loading a couple reduced loads for the 338 Lapua and i jamed one round of each at .040 into lands, .025 into lands, and .010 into lands. I was wondering if there is a point in which an increased jam wont create anymore pressure than a jam that is slightly less? What i mean is lets say you jam a bullet .080 and another at .060, since the bullet is already jammed so much that an increase or decrease in jam length wont make much of a difference on velocity or pressure, but may make a difference in accuracy. Am i correct in my thinking? I know i didnt explain it very well but if someone understands what im saying and can explain it better please do.