Thinking of building a 770 MBOGO. Any one know Where to get cases?

do you mean 470 mbogo???

How much work you want to do-How big action do you have? that's about same bore as 10 gauge.
I designed 10ga using 50 cal russian brass.
Could have rim put on or belted, Much work, cases cost too much. The machining
Cost to much, berdan primed, cost to much to
change over.And I have a 900He designed that uses regular primers, much more power,
easier to get brass cases, and easier to build ,so I didn't
pursue it. Another I didn't pursue was
necking up 14.5 Russ brass cases to 12ga or
10 ga as they have berdan primers, cases
cost to much, and I as above have 900 designed and some cases built Here is pic of 14.5
Russian necked up on the right. 14.5 steel
case left ,458 middle for comparison.
If you build it, see if Dave will fire
it off for you.Ed

Sorry guys' Was just being stupid about the unusual caiburs sometimes discussed here. Crude attempt at humor by big dumb fat stupid loser. studdog

studdog don't be so hard on yourself! As hubel458 pointed out it's doable! Humor is apreciated, but if the cart is doable, the humor is lost.