The stiffest action I've seen is the Remington 788, it has a minimum of cuts of the smallest posseble size. A single column magazine, and just an opening for ejection, not the whole top of the action being cut away. It is made of heavy tubing, and the barrel seats a whole lot deeper than normal. It has the same internal barrel seat the Mauser 98 has, but with no extractor cut, and it is a short action. Additionally it has a very fast lock time. How come every precision shooter doesn't have one?