Hello, and welcome to the Reloading Podcast here on the Firearms Radio Network.
Tonight the gang is talking about how they do load development.
How about each host speaking to a successful load development story for a favorite rifle (or pistol). For example, give a few minutes to why the specific gun is special and then go into their thought process on selecting which powders, primers, bullets, and their path to that perfect (or best possible) load. Jeffrey
Cartridge corner:The 7mm Mashburn Super Magnum is based on a shortened/necked-down/blownout .300 H&H case, with the case length being 2.630", according to P.O. Ackley Handbook #1. Velocity for a 160 gr bullet was around 3200FPS. There were several other calibers based upon this length.
The .300 Win. Mag. case comes-in at 2.620". There isn’t much difference between the 2 cases in length.
Top loads in a 7MM Weatherby w/160 grainer is approaching 3200FPS.
Top loads in a 7STW approach 3200FPS w/160 gr.
The not-so-popular "7MM Mashburn Magnum Long", different from any of the other 7s, used the .300 H&H case full-length, 2.850". Loads with a 160 gr. bullet duplicate the 7MM Weatherby Magnum velocities. Of course, powder selection back in those days was not as it is these days, so different velocities may be attained when using more modern powders.
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