Thread: Load Data Conundrums.

Greetings All,
Looked out the window, raining again, a good day to sort out my data for the 7mm Rem SAUM. I remembered an article in Handloader around 2005 so dug into the appropriate banana box to find it. Also in the box was Ken Waters third Pet Loads report from 1998. In it he listed a load of 70 grains of H1000 behind the Nosler Ballistic Tip projectile developing 3,070 fps. This is 2 grains above the current Hodgdons max. More conundrums.
Back to the 7mm SAUM. My initial test loads using the Remington 150 grain Corelokt and AR2213SC gave velocities lower than expected back in 2004 gave velocities less than expected in spite of the 26 inch barrel. Looking back the Hodgdons data was for the 150 grain Scirocco projectile which has a very heavy jacket, a little like the Nosler LRAB. Recent chronographing with the latter showed it gave significantly more velocity, and I assume pressure, than the same weight interlock. I think some more graphs will be needed. Will keep you posted.
Regards Grandpamac.