2525- Thank you for your response and interest in my question . Prior to posting it, I did try to compare ratios of cartridges as you suggested - .308 vs.30'06, 30'06 vs. 300 H&H. I choose those examples because there was abundant data available and they could be compared using the same powders I plan to use in the 6mm AI round that I am loading for.

What I found was there was too much variability between maximum book loads, paricularly in the 30'06, for me to have any confidence. The difference in Sierra's max loads with a 30'06 and Hogdon's online data is is 2-4 grains of H4350 and this in turn would skew the ratio several percentage points.

AND in loading for my own 30'06's, rarely can I get to Hogdon's max without noticing the bolt lift is a little stiff, so their max does not appear to be watered down in my experience.

I appreciate all of the input thus far and, should anyone have good data for the 6mm Rem AI using H4831 and H4350 and the Nosler 95gr BT, I would appreciate it.

Thank you.

Last edited by tcp; 04/27/15.

If you can't be a good example, may you at least serve as a dreadful warning