Twist rate and caliber for subsonic 50MBG payloads??

[d-mon]

If you intend to use a encore barrel, you could actualy ship the barrel to border, then he could rebore it to 0.50 cal and do the cut rifling in fresh metal.
You then do the chambering, but you have only one chance!


ND

[dflicker]

The current issue (June) of SAR has an article on 50 cal cartridges. The one that caught my attention is the 11.35 Madsen. It looks like it would be perfect for subsonic, possibly even in an AR10 type rifle, but I doubt that the brass is available. Has anyone looked into this cartridge? What would it take to have brass made?

David