Um, most posters say use 70 grains, use 70 grains, use a 70 grain bullet. But the tube is stamped, and more than likely regulated, for a 5,1 gramme bullet weight.

I will agree on the velocities & for the moment I am not sure of the variation. I am all but counting powder cylinders to get the powder weight very near the same, plus I measure it twice. Maybe the old Chrony but I always shoot a 40 kalibre pistol over the Chrony when I start & the velocity should be around 1000 ft/s.

Hochachtungsvoll,

Raimey
rse