Here's another one for you interested ones to view.  A U.S. long range cartridge that probably saw very limited action.  I'll let you guess for a while as to what it is.  Mike T, you have to remain quiet.      Bob

I know this is primarily a schuetzen site but thought this would generate a little more discussion from the LR black powder shooters that hang out here.  When it comes to bullet design, barrel twists, and rifling styles, nothing today is really new.  All of what's being used today was tried and tested in the past.  The cartridge in the above picture is the 45-78 Walcott 2-3/8".  I wish I had a better picture of the one shown below but it is called the 2.6" Brown Standard.  It resembles some of the latest nose shapes being tried today.