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Old September 2nd, 2020, 10:03 AM #1
lazarus lazarus is offline
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.307" bullets for M1 Carbine?

I've been trying to find bullets to reload for M1 Carbine. I've run across a few different .307" diameter bullets. Both a 110gr Remington SP and PPU 110gr SP. Would these work for an M1 Carbine? I'd think being .001" under sized would work, but not be desirable. Were these made for something odd caliber (I know the actual .307 uses a .308 caliber bullet like the Remington .308 does, but something else?).

Or would it actually likely be fine? I see on Graf's website for the .307" SP PPU several people mention working great out of their M1 Carbines.

Not something I'd get 1k+ of, but since I've got ZERO bullets for reloading M1 Carbine and I've got the dies (need powder too...but that seems, for now, easier to find). But I also don't want to drop some money on 300-500 bullets and find out they are trash.

Thanks.
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Old September 2nd, 2020, 10:11 AM #2
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Those are awfully light rounds in the first place. You'd probably have to crimp to avoid the round falling out. I'd also worry about accuracy with the bullet not filling the barrel.

In short, I'd get the right projectile.

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Old September 2nd, 2020, 10:28 AM #3
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Quote:
Originally Posted by lazarus View Post
I've been trying to find bullets to reload for M1 Carbine. I've run across a few different .307" diameter bullets. Both a 110gr Remington SP and PPU 110gr SP. Would these work for an M1 Carbine? I'd think being .001" under sized would work, but not be desirable. Were these made for something odd caliber (I know the actual .307 uses a .308 caliber bullet like the Remington .308 does, but something else?).

Or would it actually likely be fine? I see on Graf's website for the .307" SP PPU several people mention working great out of their M1 Carbines.

Not something I'd get 1k+ of, but since I've got ZERO bullets for reloading M1 Carbine and I've got the dies (need powder too...but that seems, for now, easier to find). But I also don't want to drop some money on 300-500 bullets and find out they are trash.

Thanks.
Mid south has some Horny 110 SP's up. I've never seen .307's in a M1 Carbine. Also, just FYI Grafs is very far behind on orders. I ordered something Aug 20th, no shipping confirmation yet. YMMV
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Old September 2nd, 2020, 10:43 AM #4
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Quote:
Originally Posted by spoon059 View Post
Those are awfully light rounds in the first place.
The factory weight for M1 Carbine is 110 grains. Midway doesn't list any .307 bullets. I suspect a typo. If they are round nose SP, I can't imagine Remington and PPU making one diameter to load in their factory ammo and a different diameter for reloaders.
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Old September 2nd, 2020, 10:49 AM #5
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Are you sure you need 307 bullets to start with? My understanding is that 307 bores were only present in early M1 carbines.
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Old September 2nd, 2020, 12:04 PM #6
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Quote:
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The factory weight for M1 Carbine is 110 grains. Midway doesn't list any .307 bullets. I suspect a typo. If they are round nose SP, I can't imagine Remington and PPU making one diameter to load in their factory ammo and a different diameter for reloaders.
I misread. I was thinking M1 rifle, my apologies.

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Old September 2nd, 2020, 12:24 PM #7
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The only bullet I remember as being .307 was French loaded 7.5 MAS surplus. The MAS rifles worked fine with .308 bullets though.
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Old September 2nd, 2020, 12:52 PM #8
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Just dont clean the bore and the carbon will tighten the grip. Lol
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Old September 2nd, 2020, 03:50 PM #9
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https://www.grafs.com/catalog/product/productId/20271

Also

https://www.grafs.com/catalog/product/productId/29104

Lastly

https://www.powdervalleyinc.com/prod...0-gr-sprn-100/

That's just the PPU ones. But the bags are clearly labeled .307" diameter. Reviews are good on Graf's. I have good success with PPU factory loaded ammo in my M1 Carbine. Its the most accurate stuff I've shot out of it. I guess the point is on the nose of "why would they make one diameter bullet for reloading and one in their loaded ammo?"

So I am probably reasonably safe picking some up
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Old September 2nd, 2020, 05:25 PM #10
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I did not mean to imply that you made the typo. I have had good results with PPU factory ammo in Garand and Schmidt-Rubin. I think their bullets would be fine.
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