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Old November 29, 2019, 03:31 PM   #2
BBarn
Senior Member
 
Join Date: December 22, 2015
Posts: 887
Looks like the SAAMI pressure limits are different. 62000 PSI for the 6.5 Creedmoor versus 58000 PSI for the 6.5-284 Norma. The reduced pressure permitted in the 6.5-284, and the short OALs of the 6.5-284 (due to a short throat in Hornady's test rifle) probably combined to work against the 6.5-284 in Hornady's testing.

Last edited by BBarn; November 30, 2019 at 07:55 PM.
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