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Old 01-28-2015, 10:23 AM
32-40win 32-40win is offline
 
Join Date: Oct 2010
Location: Near Drumheller
Posts: 6,733
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Occurred to me that some younger folk may not be fully aware of, is the age of that Lyman manual and some changes that have occurred since then.
Any pressures expressed in there as PSI, are CUP pressures, piezoelectric and strain gauges that measure PSI, did not exist back then.
Any load referring to 4831 powder---is the old surplus H4831. IMR did not market 4831 back then, even though Dupont made both of them. And the old surplus vs. the new H4831 canister powder burn rates are a hair different, new is considered a bit faster. Make sure you work up your load.
Ed Matunas put out a lot of good articles in magazines, worthwhile reading for good info.
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