LiveLife
Member
- LOADING NEAR/AT MAXIMUM
Repost from another thread - http://www.thehighroad.org/showthread.php?p=10171983#post10171983
Often with my .308 loads, I cannot exactly replicate published load data components as I particularly prefer to use military LC headstamp once-fired brass with crimped primer pockets with thicker walls that reduce internal case volume.
So my load development and powder work up rely more on the muzzle velocities measures on the chrono and reduced powder charges that produce optimal accuracy than maximum published load data.
I used to sort resized brass by weight but now I sort by internal case volume.
Repost from another thread - http://www.thehighroad.org/showthread.php?p=10171983#post10171983
Another variable is commercial vs military cases.stringnut said:The loads should be within the SAAMI parameters. Individual firearm variation is why you should work your way up in small increments, or, if you change components.Bart B. said:What's the best definition of "maximum?"
Peak pressure? Muzzle velocity?
One is often measured with good precision in a 2% range. The other is rarely measured with good precision in a 15% (or greater) range.
One's not a safety issue. The other one is.
Will a manual's max load always be at or less than SAAMI's max average pressure in anyone's rifle?
Often with my .308 loads, I cannot exactly replicate published load data components as I particularly prefer to use military LC headstamp once-fired brass with crimped primer pockets with thicker walls that reduce internal case volume.
So my load development and powder work up rely more on the muzzle velocities measures on the chrono and reduced powder charges that produce optimal accuracy than maximum published load data.
I used to sort resized brass by weight but now I sort by internal case volume.