Has anyone tried magnum primers with H4831 and 105-107 gr. bullets? What were the results compared to benchrest primers?
roninflag said:on longrangehunting.com the botw load is i believe h-1000 not sure of the primer. in their cold weather it would be a good idea. used it to kill an elk at 688 yards in vid. they use an 8 twist krieger barrel.
CPorter said:I observed better es & sd using magnum primers in the 243win when using extruded powders like IMR 4831, 4350, and 3031.

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