I have been working on a load with the Sierra 85 gr HPBT for .243 with H4350. The Sierra manual lists 42.2 gr as the max charge, Hodgdon lists up to 45.5 gr for 85 gr bullets (not specifically the Sierra HPBT), and Nosler lists 43.5 gr max.
Is the Sierra data overly conservative, or is it something specific to this bullet?
I have loaded the listed Sierra max of 42.2 gr, and it has provided the best results by far compared to smaller charges with no signs of high pressure. Reviewing old threads here, some people have had best luck at H4350 loads around 42.3 gr or a bit higher, and I am tempted to try a little more than the Sierra max of 42.2 since it has given me the best results.
Any thoughts?
Is the Sierra data overly conservative, or is it something specific to this bullet?
I have loaded the listed Sierra max of 42.2 gr, and it has provided the best results by far compared to smaller charges with no signs of high pressure. Reviewing old threads here, some people have had best luck at H4350 loads around 42.3 gr or a bit higher, and I am tempted to try a little more than the Sierra max of 42.2 since it has given me the best results.
Any thoughts?