Cartridges with a .473 case head

 I just purchased a JC Higgins '06 for the action for a project. I don't really need any particular cartridge so It may be like picking a horse because I like how it looks I'm trying to think of all the choices. So far I've come up with these, if I missed any please list them.

25-06    .270  30.06  .280  35whelen 7x57  8x57   9.3x62

 I,m sure I'm missing more than a few........

 

Well it sounds like you want a '06 based case.  But it you consider the other .473 head dia cases you need to include the 308 and its children.   358, 338-08,7-08, 260, 243, 244.

You need to consider the children of the 7x57 namely the 257 Roberts and the 220 Swift, and the 257 AI

Also the 284 and the 6.5-284 and the 375-284.

The 338-06.

The 300 Savage and its children  22-250, the 250-3000 (a favorite of mine) and the 270 savage.

The 8-06 is  an excellent long length cartridge that was "almost"  a factory round, and very versatile.

These pop into my mind, I'm sure that other 473 cases are around especially exotic wildcats.

BEAR

.264/06

I seem to remember the Lee navy being the base cartridge for the 22 swift, but I believe the us manufactures adopted the .473 rather than the .472  as the head diameter.  But I'll check SAMI.

checked Cartridges of the World 8th edition, shows drawing with .473.  Also check my cartridge designer on RCBS disk (it is SAMI dimensions), it lists 220 swift as .473.  COT lists the 6mm Lee as having a rim dia of .448. 

Maybe someone, like Deaddog has a 220 swift in their collection and could mic it for us????

 

BEAR

Bear;

I have the Swift & reload for it.  I know the shell holder is different than that for the .473 cases.  I'll check for sure tonight.

900F

Fella's;

OK, did some checking of the cartridge diagrams last night & found out why although the .220 Swift is indeed a .473" casehead, it needs a different shellholder than a normal .473".  The Swift's body diameter immediately above the rim is .4473 of an inch, whereas the .30-06's diameter in the same area is .4707".  The Swift is over two tenths of an inch smaller in diameter above the rim.  And that's why it's referred to as a semi-rimmed case, because the rim is .0257" greater in diameter than the fattest part of the case body. 

Putting a Swift case in a normal .473" shellholder doesn't provide enough support to stabilize the case.  Consequently, when you run it up into the die, the resulting lean would ruin a lot of brass when the mouth hit the die instead of entering cleanly.

900F

Rob1 wrote:  I just purchased a JC Higgins '06 for the action for a project. I don't really need any particular cartridge so It may be like picking a horse because I like how it looks I'm trying to think of all the choices. So far I've come up with these, if I missed any please list them. 25-06    .270  30.06  .280  35whelen 7x57  8x57   9.3x62  I,m sure I'm missing more than a few........

Try http://www.sskindustries.com for some different chamberings .My GS sought those recievers and would have douglas barrel them with mag chamber or any caliber of the buyers choice.He'd use a high grade  Fajen stock bedded with brownells bisonite.

Edited by 24mod12

hard to go wrong with a 7x57. for the "montana hunter" i think it would be an ideal choice.

BEAR wrote: 24/12 That is J. Jones.  he has a zillion wildcats, many based upon the 444 marlin.  He use to a contender guy, but has switched to the Encore frames.  Had him do a Contender barrel in a wildcat about 15+ years ago.  decent quality work.   Sometimes I think He exaggerates his velocities on his wildcats. But interesting stuff.,  Not many on the .473 case head, also not a lot of rimless shells in his bag. BEAr

From SSK's 6.5Mini-Dreadnought on the 220 Swift Case  produces 2900fps with a 120gr  & 2700fps with a 140gr  virtually no recoil JDJ says it's a 300 yard deer round.

24/12

The 6.5 Minidreadnaught is interesting.  But it really just duplicates the 260 Remington.  Maybe the name makes it a better killer.  But for all the work and $$$ to Jones to get one,, I'll stick with my Kimber 260.

Remington "green/Yellow" box	120 AT BT	2890	2697	2512	2334	2163	2000
Premier® Core-Lokt® Ultra	140 CLUB	2750	2554	2365	2185	2013	1849

I do like the swift, which has taken  a back seat from the 22-250.  the intermediate case size probably hunts its popularity?  In the '50s it was a screamer and some of my friends shot them.  It had a reputation of being a barrel burner.  Maybe deserved, maybe not.  Seems the 22-250 loaded to the same velocity would burn the barrels about the same, but the 22-250 never got that reputation?

BEAR