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Legacy Member
That is not how primers and powder ignition work . You had some other load problem before . Too much powder , wrong powder , or something and just did not do it this time . . The powder does not burn and build pressure until the bullet moves and seals on the bore .
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07-27-2020 03:30 PM
# ADS
Friends and Sponsors
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Contributing Member
Could there have been any old grease or debris in the chamber that might have led to hard extraction? Sometimes these rifles sit idle for decades due to lack of easily obtained ammo, and stuff will congeal in there.
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Legacy Member
hornady 10th edition lists that imr 4064 start as 29.3 and max as 31.4 with a wlrm primer
also I just noticed that hornady 10th ed has a note on the load data for this load. page 295
"note:
only winchester wlrm primers should be used with this data"
Since you had the hornady info I will assume you have that manual and wont list those powders.
lee second ed.
large rifle primer min oal 2.935 160 gr jacketed bullet
h4831 37.0-39.0
h335 27.0-30.0
bl-c(2) 27.0-30.0
h380 28.0-31.0
h4895 27.0-30.0
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Legacy Member
Chamber
Is your chamber nice and bright and shiny? Lots of Milsurps have beat up chambers. Try to clean up the chamber and try to buff it up slightly. Should help.
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