Some time ago, I picked up a Model 1896 Oberndorf Mauser 1912 chambered in 6.5x55. This wasn't my first 1896 6.5x55, but the only one I've had with a brand new, unfired barreled action. It was the long 29" barrel rifle, however it does have an oversized groove diameter of .366" with a bore diameter of .256" showing .005" deep rifling. I shortened the barrel to 22" and remodeled the stock for sporting use.
: Since that time, I've developed a number of handloads for it along with testing it with Normay factory 156gr. RN bullets. It's a good shooting rifle, so far with Hornady bullets ranging from 129gr.SP Hornady to 160gr.RN. It opens to 2.5" groups with 160gr. Sierra bullets with everything else pretty much landing in 1-1/4" to 1-5/8" groups at 100 meters. I'm shooting off the bags using the factory military rear sight and a modern ramp with post front sight.
: What sort of shooting have you done with your 6.5x55? and what loads have been developed for it?