How old is this ammo? And what is this caliber??

[Trey Veston]

I was rummaging through my late father's ammo stash and found some very interesting boxes of ammo.

The first was this very old and complete box of Winchester 7mm ammo...














The second box I found was newer, but in a caliber I had never heard of. Weird looking little guys...









Any ideas of how old the 7mm is or what the heck a 22 Remington Jet Mag is?

 

[Jim Watson]

.22 Jet is .357 Magnum necked down to .22 for the Smith & Wesson model 53 revolver. Also chambered in a Marlin lever action and some single shots.

 

[Trey Veston]

.22 Jet is .357 Magnum necked down to .22 for the Smith & Wesson model 53 revolver. Also chambered in a Marlin lever action and some single shots.

Fascinating!

 

[unspellable]

The 22 Remington Jet is more commonly known as the 22 Jet. It was chambered in the S&W 22 Jet revolver, It met with very limited success, in part due to set back problems. In my book it is a prime example of a manufacturer adopting a wild cat and fixing what ain't broke. The wild cat was the 22 Harvey K-chuck. based on the 22 Hornet case. The 22 Jet is based on the357 Magnum case and the ridiculously long shoulder caused the set back problem.

I suspect the other cartridge is the 7x57 Mauser.

 

[db_tanker]

wow....that is some awesome stuff!

The Jet is, as stated by Jim and unspellable, a 357 mag case necked to a 22. Most times nowadays you will see it chambered in the Contender single shot pistol. The 7mm is 7mm Mauser likely. You can measure it out......you can check the base - should be .473" dia at the base/rim and an overall length of 3.07".

Collectors LOVE, myself included, those old boxes. Keep them I'd say - many memories there I'd say.

D

 

[luv2safari]

My guess to age is:

22 Jet mid 1970s

7X57 Mauser: 1920ish

These are just guesses.

Loved seeing these old boxes!

 

[.308 Norma]

I don't know how old that 7mm Mauser ammo is, but seeing it makes ME feel kinda old. Back when I first got into big game hunting and big game rifles (in the early 60s), when someone said they had a "7mm," they meant they had a 7mm Mauser. Nowadays, when someone says they have a "7mm," they usually mean they have a 7mm Remington Magnum. The 7mm Remington Magnum was invented in 1962, but nobody I knew back then had one.

 

[.45Coltguy]

7x57 is Remington, not Winchester. Those are some older rounds to be sure.

 

[Walkalong]

The 7 MM Mauser is an excellent round.

 

[.45Coltguy]

The 7 Mauser is an excellent round.

You ain't kiddin'!

 

[NIGHTLORD40K]

I was rummaging through my late father's ammo stash and found some very interesting boxes of ammo.

The first was this very old and complete box of Winchester 7mm ammo...

View attachment 1179621

View attachment 1179622

View attachment 1179623

View attachment 1179624

View attachment 1179625




The second box I found was newer, but in a caliber I had never heard of. Weird looking little guys...

View attachment 1179627

View attachment 1179628

View attachment 1179629

View attachment 1179630

Any ideas of how old the 7mm is or what the heck a 22 Remington Jet Mag is?

The S&W M53 .22 Jet revolvers also came with a set of cartridge adaptors so that .22 Long rifle could be used as well.

 

[Riomouse911]

I love how ammo makers will put their name on the headstamps if they got the credit for introducing it to the masses.

.44 Rem Mag, .41 Rem Mag, .22 Rem Jet, etc.

I have seen two .22 Jet Model 53 revolvers at my LGS over the years. One with .22LR chamber inserts and one in a walnut/velvet presentation case with .22 LR inserts and a second complete cylinder in .22WMR.

Cool collectors items, those Model 53’s.

The boxes you have are collectible, too. Those old Rem-UMC rounds look like they were made not long after Union Metallic Cartridge Co. and Remington Arms became one company. (Remington Arms bought Peters Cartridge Co. sometime later on.)

Stay safe.

 

[LV Gun]

I was rummaging through my late father's ammo stash and found some very interesting boxes of ammo.

The first was this very old and complete box of Winchester 7mm ammo...

View attachment 1179621

View attachment 1179622

View attachment 1179623

View attachment 1179624

View attachment 1179625




The second box I found was newer, but in a caliber I had never heard of. Weird looking little guys...

View attachment 1179627

View attachment 1179628

View attachment 1179629

View attachment 1179630

Any ideas of how old the 7mm is or what the heck a 22 Remington Jet Mag is?

Here is a little information on the 22 jet I believe Taurus also chambered a Raging Bull revolver in it also

 

[Jim Watson]

one in a walnut/velvet presentation case with .22 LR inserts and a second complete cylinder in .22WMR.

That is a special order, a rechamber, or a mismark; the regular auxiliary cylinder is .22 LR because the Jet is a .222", not the usual .224" of a .22 centerfire.

The 7mm box label mentions the Remington Lee rifle, which was made in smokeless calibers from 1899-1907. They might have kept the label after the rifle was discontinued, though.

 

[rust collector]

Bullet design for the 7x57 Mauser military cartridge was changed from the original 172 grain round nose to the 162 pointed (spitzer) boat tail after 1913, so those cartridges may be of that vintage. The cupronickel jackets resemble military design, but headstamp bears no date so likely intended for civilian use.

 

[troy fairweather]

Back when 7mm mauser was the only 7mm lol, herters used to sell ammo that was basically military ammo but the tips of the bullets filed off the round nose fmj. The jet is a cool little round.

 

[230RN]

The 22 Remington Jet is more commonly known as the 22 Jet. It was chambered in the S&W 22 Jet revolver, It met with very limited success, in part due to set back problems. In my book it is a prime example of a manufacturer adopting a wild cat and fixing what ain't broke. The wild cat was the 22 Harvey K-chuck. based on the 22 Hornet case. The 22 Jet is based on the357 Magnum case and the ridiculously long shoulder caused the set back problem.

I suspect the other cartridge is the 7x57 Mauser.

NOTE: i composed and posted this before I was aware of the other posts covering these same details.
------------
In addition, inserts were available ro place in the .22 Jet chambers so you could fire regular 22. rimfires in it. If I recall correctly, The hammer had a swinging firing pin to fire either the center fire Jets or the .22 rimfires.

If your Dad had the ammo, I wonder if he had the gun. I don't know what it would be worth collector-wise, but the setback of the nicely tapered cases were a problem... and once your on-hand ammo is gone,that's about it, utility wise, unless you can find the rimfire inserts around somewhere.

Further dim recollection indicates there may have been complete .22RF cylinders available.

Corrections welcome.

Great quality photos, by the way.

Terry, 230RN

 

[jmr40]

The 7mm Mauser has several names. Some call it the 7X57 and in Britan, they called it the 275 Rigby. Same cartridge, different names.

 

[unspellable]

Hornady sells two loadings of the 7x57. Oddly, they label one as 7 mm Mauser, the other as 275 Rigby.
The 7x57 has faded in popularity. It deserves better, it's sort of a goldilocks cartridge, not too big, not too small, not to fast, not too slow, etc.

 

[plainsdrifter]

The lead looks way more than 175 grains on those 7mm.

 

[InTheField]

When I was a kid, I bought some of those identical 7mm Mauser shells (in those same boxes) to shoot in my just purchased South American contract Remington single shot rolling block military rifle. Both the ammo and the rifle were antique surplus at the time (around 1960 when I was 11). The ammo is most certainly corrosive primed.

 

[Dave DeLaurant]

That is a special order, a rechamber, or a mismark; the regular auxiliary cylinder is .22 LR because the Jet is a .222", not the usual .224" of a .22 centerfire.

Simpsons has had several for sale recently, both LR and WMR:

Search results

simpsonltd.com

Interesting that the box of ammo has 4 fired rounds. I'm more accustomed to finding old boxes of .44 Magnum from the post-Dirty Harry era with six fired rounds.

 

[jmorris]

The S&W M53 .22 Jet revolvers also came with a set of cartridge adaptors so that .22 Long rifle could be used as well.View attachment 1179652

Could you post a photo of the back side? How did they get the firing pin to hit the rim and not the center?

 

[br549arkie]

Back in the early 1970's I bought a sporterized 7mm Mauser M93 at Walmart for I think $23.00 on sale. Couldn't find any ammo for it around here at that time except for a partial box of shells that looked like the ones you have. First time I tried to shoot it I pulled the trigger and it went click then as I started to lower the rifle KABOOM first and only hang fire I've ever had.

 

[.45Coltguy]

Hornady sells two loadings of the 7x57. Oddly, they label one as 7 mm Mauser, the other as 275 Rigby.
The 7x57 has faded in popularity. It deserves better, it's sort of a goldilocks cartridge, not too big, not too small, not to fast, not too slow, etc.

I have read that the British could not bear to call it the 7x57 Mauser, so called it the .275 Rigby. Old fashioned snobbery at it's finest!