What's with .307 diameter .30 Carbine Bullets???

[Grump]

I first noticed these maybe two years ago, and thought that maybe they were for some funky foreign-made .30 Carbine pistol that had an odd metric-almost-English-dimensioned bore.

I never heard of .307 for this Carbine caliber until I saw the bullets for sale.

Sohowcome? I though all USGI bores were .308 groove diameter.

 

[JCH]

Re: What's with .307 diameter .30 Carbine Bullets???

I think the 7.62x54r rifles can use those type bullets (the old rifles from WWII)

 

[WRM]

Re: What's with .307 diameter .30 Carbine Bullets???

They'll be 150/170 FPs for a 30-30....

 

[bohem]

Re: What's with .307 diameter .30 Carbine Bullets???

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JCH</div><div class="ubbcode-body">I think the 7.62x54r rifles can use those type bullets (the old rifles from WWII) </div></div>

Those run .310-.314, not.307

The .307's work for 30-30 and for some reason there's some 30 carbines running around with tighter bores. I think it's probably due to the obturation of lead bullets in the 30-30 BP rounds that the cartridge started as, and the carbines are glorified pistol rounds.

 

[Victor N TN]

Re: What's with .307 diameter .30 Carbine Bullets???

I just checked a few factory rounds and bullets of mine. They all mic at .308

 

[WRM]

Re: What's with .307 diameter .30 Carbine Bullets???

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Victor N TN</div><div class="ubbcode-body">I just checked a few factory rounds and bullets of mine. They all mic at .308 </div></div>

By gosh Victor, I stand corrected. Could have sworn that's what those are for.

Just checked "Cartridges of the World". 30-30 Win listed as .308". The 30 Rem (rimless version of 30-30 Win) is listed as .307". 7.62mm Russian Tokarev and 30 Borchardt (pistol carts) also listed as .307". And that is it....

Bill

 

[AXEMAN]

Re: What's with .307 diameter .30 Carbine Bullets???

you ever notice the die sets are 307/308 cal?

 

[Grump]

Re: What's with .307 diameter .30 Carbine Bullets???

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: AXEMAN</div><div class="ubbcode-body">you ever notice the die sets are 307/308 cal? </div></div>
That's because the so-called ".307" is a rimmed version of the .308 Winchester, otherwise identical in external dimensions and external ballistics. It was made for leverguns when Winchester was trying to boost market by making them equivalent to the popular bolt guns, ballistically.