Originally Posted by
grumpa
i've done it with 444 marlin brass, i have also done the 303 route. Using 303 the case is very thick, which.....reduces payload a bit.
Using the 444 marlin requires a lathe to turn down the body right next to the rim. I can get a 30% increase in payload using the 444 marlin, but i can't remember how much i got in the 303 british.
I use a special die for the crimp though, it's called a notching die which cycles great in rifles.
Hardest part when coming up with ideas.....trying to come up with a cheap parent case, it's not as easy as you may think.
After thinking a bit about what 54bore wrote, that's a case i didn't even consider. Guess i'll need to try the 445 case since it's even cheaper than what i'm using right now.