rfwobbly
Member
Loaded up some 223 plinking rounds last night and consulted the Sierra manual for 55grn with H322 in an AR. Sierra gave 24.3 as max at 2.250" (3000fps). My load of 23.5grn at 2.250" should have put me right under 2900fps for good accuracy.
Afterward I consulted Hodgdon which gave 23.0 as max for H322 at 2.200" (3100fps).
► Can't believe .050" makes that much difference.
► Going to put some over the chrono and see who to believe.
Any guesses on what the findings will be ?
Afterward I consulted Hodgdon which gave 23.0 as max for H322 at 2.200" (3100fps).
► Can't believe .050" makes that much difference.
► Going to put some over the chrono and see who to believe.
Any guesses on what the findings will be ?