My 270_280 post got me thinking. Excluding pistol and sub 22 calibers has there been any new calibers introduced since the .277? Captdavid

.700" ...

Were there any .338 caliber cartridges prior to the .338WM?

.33 Winchester

I was wondering what year the 33 Winchester hit the streets as well.

Quick google search said 1903.

Man.... we're really scraping the barrel if we can't find anything new since 1925....

Yup!

We have had everything we've needed since 1925. Except for .20 caliber. We really needed that badly! LOL!

captdavid-
The 7.35x51 Carcano had a bore diameter of 0.290" and a groove diameter of about 0.301". Cartridge and rifles chambered for it were introduced about 1938, about 20 years after the .277. I have not been able to find any precedents for those bore dimensions.

(Ever since JB/MD described the B-29 cartridge, I've wondered whether bullets pulled from old WWII surplus Carcano ammo would work in that cartridge.)

--Bob

The .277" bullets were around for nearly two decades prior to the introduction of the .270. I believe Chinese Mausers were being rifled for .277" bullets prior to 1910. That 7.35 Carcano may be the only one introduced (other than the really little stuff) since the very early 1900's.

The .348 Win. in 1936 for the model 71. It was the only cartridge the 71 was chambered for. Except for some imported replicas, I believe the only factory rifles chambered for the .348 was the 71.

There were some who swayed bullets for .23 caliber wildcats.

Oh ye of midlin memory, doest thou not recall the B29?

I was waiting to see if the mighty B29 would get some love and attention.

The .333 OKH cartridges are .33

Only a couple that I can remember.

Years ago I read somewhere that at the end of the chinese contract there were a lot of .277 bullets left over so Winchester decided to stuff them in an '06 case and see what happened.

I suppose there's room for a .29 and maybe a .23, but what's the point? I mean, other than selling new stuff? Aside from offering cartridges in shorter action lengths now and then, I just don't see the point.

Feeling a bit negative today...no idea why!

Calhoun's 19 caliber is fairly recent.

Why not a good 23 for those states that won't allow 22 CF for deer,
spin it fairly fast so it can handle heavier bullets. Just saying.
Cheers NC

P.O. Ackley used to make 23 caliber bullets and chamber rifles in it for just that reason.
It never caught on............

Was that the .228 Ackley, or some such?

Can't remember offhand.
I know he was fond of hunting with a 220 Swift, but when they outlawed the 22 calibers he started making his own 23s out of spite on different cartridge cases..........

Some states that outlaw 22 centerfires for BG have their laws stating something to the effect of "no caliber under .243" may be used."

8.15x46R

They do now - probably thanks to people like P.O. Ackley Making 23s back in the day before there were any such regulations.