Note the following is for the 6,5X48R......


117 grain bullet / 23 grains Viht N-140 = 2450 bar (35530 psi) and 2234 fps

117 grain bullet / 22 grains Viht N-140 = 2130 bar ( 31470 psi) and 2144 fps

110 grain bullet / 23 grains Viht N-140 = 2270 bar ( 32914 psi) and 2250 fps
Quick Load Data Calcs or similar


»The Ql calculations impute using .264" bullets from .264" pressure test dimension barrels and .257" bullets from .257" barrels. That is not the problem here. We are talking about shooting .257" or .261" bullets from the same barrel. That barrel has a groove diameter of .257" (Leatherman's first post, I tend to believe that) to .260" ( maximum calculated from the proof marks). Shooting fitting or even slghtly undersized .257 bullets from that barrel will not rise pressures, but lower them, compared to the original .261" bullets. So I would try .257" 117 gr rn bullet first, loaded with about 22 gr VV N140.«



https://www.germanguns.com/vb5/foru...l-discussion/1399-6-3x48r-cape-gun/page2


Note the above is for the 6,5X48R


Hochachtungsvoll,

Raimey
rse