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12-29-2011, 11:01 AM
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Join Date: Jan 2007
Location: Great Lakes State
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Quote:
Originally Posted by dcxplant
So the jist of this (from what I gather as a new reloader) is:
-Accuracy MAY be increased by seating a long (keeping gun function in mind), without increasing pressures to unsafe levels.
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Seating over COAL can increase pressures if the bullet is too close to the rifling, that's why Nosler recommends .015 to .030" off. Weatherby provides a lot of free-bore because their cartridges are hot and I wouldn't get closer than about .030" off. On benchrest guns, the heavy custom barrels, trued locking lugs and the lower cartridge pressures allow a lot of leeway. Always work up to maximum loads when you change something and look for signs of excess pressure (difficulty opening the bolt, flattened primers, etc...).
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