thought i would try and make a 358 winchester short. necked up some 308 cases and trimed to 1.8 . the neck was about .016 thick. seated a 225 grain sierra gameking bullet. would not chamber. neck was to thick. necked up some 243 to 708 then 308 then 358. streched the case neck enough to thin it out to .012. trimed it to 1.8 seated the 225 bullet and chambers fine. i think neck tension will be alright also. pulled the bullet back out and it seemed tight enough. i also ran the short neck into my 357 mag die and it sized it down to .350, the .358 die sized it down to .355 so if the .003 isnt enough i can always go to .008 and that should do it. going to be interesting to see what happens when the case is fired and then resized. seated the bullets .235 in the case for an overall length of 2.070. about .70 shorter than the 225 gameking bullet in the 358 case. going to load some up and see how it shoots sunday.
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