There are not alot of recipes in the books. Most of those were for the original SPC Remington and are low powered. The SPCII allows higher pressure and I think SSA and Hornady are the only ones loading for the SPCII (SSA loads both standard and the hotter Tac loads). There are probably only 4 companies loading 6.8.
Also there are brass with large primers and small, general conscensus is the small primer case handles pressure better.
If you have not checked, there is a great forum (Home of the 6.8) that has a ton of info. Kind of the pioneers who took the original spec to the improved and tons of load development with all kinds of powders, etc.
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COTEP CBOB0297
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