Isn't that about the ballistic twin of the .35 Whelen? Might be able to start with the LOWEST loads for the Whelen and SLOW powders and work up your own. IF YOU FEEL FROGGY!
Given that a reason, perhaps the reason 9.3X57 is undersupported is the ease of running the chamber out to the already not overbore 9.3X62 I'd take say Norma at their word that their 201 is a good powder and fairly fast a reasonable burning rate.
There is data available but it's not something lots of people will pay money for and it isn't or wasn't a SAAMI cartridge which always slows things way down or even brings things to a screeching halt.
For instance a Sako 255 grain bullet in Norma cases and N140 powder is listed for 690 m/s by Vihtavuori Metric Reloading Guide for Centerfire Cartridges available from their web site and so not quoted here.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
