Home Forums Reloading Big Game Rifles 240 Cobra

A friend of mine just bought a 240 cobra and we have no load data for it and have not been able to find any. If anyone here has any info. for this caliber it would be greatly appriciated.

Dont have much too offer but there is 240 cobra RCBS dies on ebay. ebay.

jg:
I don't have a .240 Cobra but I found some info in P.O. Ackley's book "Handbook for Shooters and Handloaders - Vol.1"
the following info can be found on page 301 of the above cited reference.
...."The 240 was originated by Homer Brown and cases are made by necking the .220 Swift cases up to 6mm and fire forming them to final shape."

Following is the load data Ackley supplied:

75 gr. bullet 43 gr. 4064 powder 3550 fps
42 gr. 4350 powder 3430 fps

85 gr. bullet 42 gr. 4895 powder 3790 fps
43 gr. 4895 powder 3406 fps
47 gr. 4064 powder 3406 fps

95 gr. bullet 48 gr. 4350 powder 3540 fps


A couple of side notes:
1. Looking at the data for the 85 gr. bullet, velocities look
suspect to me. Note the vel. for 42 grs. then the vel. for
a 43 gr. charge. I've double checked the book and those
are the given numbers.

2. As I recall, the powders Ackley referred to were the
Hodgdon series AND NOT the IMR series so use caution
here.

I hope this gives you a starting place and has helped some. Basically, Ackley seemed to like this cartridge.
Later, Bear in Fairbanks

jghoghunter-

As you probably know, the .240 Cobra is a sort of 6mm/220 Swift Ackley Improved. Be careful, because there was more than one form of chambering reamer reported for it.

The story of its origin is told in Rifle magazine #63, May-June 1979. The article was written by Bill Corson, who won a national contest for naming the cartridge. Corson lists some published loads from the early days of the cartridge; some of these were overloads in his rifle.

A couple of loads were published in a follow-up letter to the editor in Rifle #65.

Ken Waters wrote one of his typical well-researched articles on the Cobra in Handloader #105, Sept-Oct 1983, page 10. Waters includes some of Warren Page's favorite loads.

The American Rifleman of April 1949, p.60, has a write-up of Cobra history.

The Cobra looks like a fun cartridge to play with.

--Bob