Quote:
I wonder what the pressure/data was for the black powder 25-35?

The .25-35 was introduced by Winchester as a Smokeless powder round, it was never intended as a black powder round. Many have been confused by the name designation over the years, just as with the .30-30 Which was not so called by Winchester incidently, but later by Marlin I believe it was. Both of these rounds were introduced to the market as Smokeless powder rounds by Winchester for the 1894 lever action. Winchester called the .30-30 the .30WCF. The little .25-20 already had the name .25WCF. I too have read many places over the years that the 6.5x52R was simply the metric designation for the .25-35W, was totally unaware of the pressure drop for the continental version. Actually I thought specs for all the older Winchester lever action rounds called for pressures staying beneath about 38K when measured by the crusher method (CUP).

Miller/TN
I Didn't Say Everything I Said, Yogi Berra