I have moved the "Load Development" portion of this project to this section and out of the gunsmithing section. The gun is built, now comes the figuring out the ammunition part.
In case you guys haven't heard the .35-303 is a Wildcat Cartridge made by necking up a .303 Enfield case and re-boring the barrel to .35 caliber. This was done for a variety of reasons, IE: Shot Out Barrel, Not being allowed to have a "Military Caliber" in your Sporting Rifle by your Oppressive Government? Or maybe you just need something a bit more powerful to deal with something that is more powerful that you are. Large things that bite come to mind, and finally you just wanted something different that everybody else didn't have!.
The .35-303 checks all these boxes.
In this thread I talked about 2 guns that came together and started talking about load development for the Enfield. The Springfield is a .30-06 and I have had workable loads for it for 30+ years.so I don't need to discuss that.
I also have loads for 3 Jacketed Bullet Weights and one Cast Boolit Load for my .303 Enfield, so lots of things about loading that cartridge carry over to the .35-303. Neck Sizing only is the biggest one.
In order to load these rounds I had to modify a batch of new Hornady .303 brass that was given to me by a member here. I did this by Shoving the cases into a .358 Winchester Sizing Die. This made them ready to be loaded. I don't know how much the cases will change after the first firing but I do know that the shoulder will be very small but more prominent than it is before firing.
In the other thread I mentioned my new Accurate Mold (.36-250D) and showed a pic to the first boolits to come out of it. These boolits are gas checks so I won't have to diddle with barrel leading. Also the next batch will be PC'd.
Anyway more to come on this but I've got to go to a birthday party right now.
Randy