Most people forget a loading manual is not a Bible, that is why you look at a few different sources of information then go shoot through a chronograph, every rifle is different and don't like the same load as another of the same caliber.
I did that today, I shot 3 rifles through my chronograph, a 270 Winchester that shot 200fps faster than the manual said at 2gr under max, a Rem 7Mag that I had loaded 2gr over max that was still more than 100fps slower than the manual said and a 300WM that shot to with in 20fps of what the manual said.
The only absolute with loading is that BS1917Kchunter Fhuqking knows everything (if only in his own mind)
