Quote:
Originally Posted by Jellybean
Now I'm really confused! I though increasing the seating depth increased the pressure.
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It does generally, but bullet composition and bearing length play just as big a roll in pressure as anything else does. A bullet with a longer bearing surface will
almost always turn up higher pressure than a bullet with a shorter bearing surface when both weigh the same, and are seated to exactly the same length, or a harder makeup like a jacketed bullet can and
almost always does turn up higher pressure than a cast bullet of the same weight with the same depth of seating. But......... a cast bullet that is too soft and fired in a high pressure round like the .454 Casull can turn up extremely high pressure also.
A cast bullet that is seated deeper than a jacketed bullet, or a cast bullet that has a shorter bearing surface than another of equal weight, but is seated deeper, may not necessarily turn up higher pressure, and odds are it won't.