[260 Rem]

None of the brass is likely to have excessive HS. Everything in both lots is the same except for the number of reloads. I have plenty of experience with the 6 Dasher (think I have about 6 barrels chambered with my reamer). Also pretty confident the load is not low pressure or it would not drive the 95 gr close to 3000fps from a 23" barrel). With 105's and the same volume of powder I get about 2975 fps from a 25" barrel. When I load the Dasher with a 105/33.0 gr combination and get velocities approaching those of 243 Win ...with 10 grs less powder ... which can only be done with a lot of pressure.
Now, if one was looking for a top notch varmint rig, the Dasher kicks butt. I think it (and it's variants) still dominate 600yard International BR Shooters competition. Even their 1000 yard completion is likely to have a greater number of this "improved" cartridge than any other show up in the top 20.