.30 Cody Express.
Vinton W. Knechtges made one up and named it after his granpa,Mike Cody. Mike was one of the top salesman for Federal Cartridge.
I love .30's and am interested in the Cody.

Don't have a clue what it is built on. Loadtech lists the case. 123.2grs water capacity. case is 2.86" and COL is 3.67. The show a max pressure af 47125.

Take all of that with a large grain of salt.

Midway lists the die. Calls it a 30-416 Rigby

From the Reload Bench
http://www.reloadbench.com/cartridges/w30cody.html
30 Cody Express Reloading Data
Bullet (grs.)____Powder / (grs.)_MV
110 HP ________H4831 / 95.0__4050
125 SP ________H4831 / 92.0__4000
150 SP ________H4831 / 85.0__3900
168 HP ________H4831 / 82.0__3850

And, if you didn't click on Frank's excellent link, it is based on the .416 Rigby. Cool.

While his link is good it looses a lot of credibility when it's main reference is to a super high energy that is over stated by over 3000lbft. The 168@3850 actually has more energy.

Zippy cartridge.
I found a 250 grain load at 3900 fps/8445 me.
Do you guys think this would handle Groundhawgs okay?

Sounds like it has some similarities to Ross Seyfreid's 30-416 Ackley Imp.40Deg.I toyed with that idea a few years ago but put on the back burner due to the cost of the case form dies.It may still happen but if so I intend to see if one could use 338 Lapua brass + possibly neck down in one stage.Any ideas on this?