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Discussion Starter #1
So i came across a deal on alot of factory loaded 303 ammo from FC and R-P. I got it to form the brass to 30-40 krag. For the heck of it I chambered a round in the gun and it closed perfectly. Now i know the 303 is actually.311. Could i fire this ammo in this gun and fire form all the brass?
 

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As a rule its never a good idea to fire ammo other than whats designed for your bbl.

Compairi f whats seen here It dosent appear it would fit and because of pressures involved COMBINED with larger bullet. It is NOT ADVISABLE.

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CW
 

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Discussion Starter #3
didn't realize the pressures in the 303 where that much higher. Was thinking that they were both lower pressures due to old design and thought that maybe newer barrels like the H&R would handle it. Thanks
 

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As a rule 303 ammo is a lot more spendy than 30-30 ammo. Sell the 303 ammo and buy ya some 30-30 ammo.

My old dead buddy Butch made the mistake of loading some 308s with .311 or .312 bullets and the pressure was enough to stick the bolt.

I would advise against it.
 

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I have used once fired 303 British brass to form 30/40 Krag. Did this when Krag ammo was hard to get. It comes out a tad short but the case head spaces on the rim.
 

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So pull the .303 bullets, pour out some of the powder & top off with Cream of Wheat, go out and fire form those puppies!

~WH~
 

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Could you pull the bullet and dump the powder, then resize the 303 neck, charge with an appropriate powder load and seat a .308 bullet long to hold the case against the breech and then fire form the brass?

I have never shot/loaded .303 or 30-40 Krag!
 

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Discussion Starter #9
even thought about pulling the bullets, removing the decapper pin from the dies , resizing to the krag and then reloading.
 

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If it was safe to fire .303 British in a 30-40 Krag we would have heard about it by now. They have coexisted for 130 years or so. I would pull the bullets and start from the beginning and use proper .308" bullets.

Sent from my SAMSUNG-SM-G930A using Tapatalk
 

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no one is saying it's safe to fire 303 Brit in a 30/40 Krag. It is safe to use 303 Brit brass to form 30/40 Krag brass. It's one of the easiest to do. All that's needed is 303 brass, lube and a 30/40 sizing die.
 

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The OP was asking if we thought it was safe to fire 303 in the 30-40 to form the brass. I voted no.

Sent from my SAMSUNG-SM-G930A using Tapatalk
 

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303 British is 0311 not 323. That is 8mm. Seems strange no one noticed that. I've shot 310/311 bullets in 308 barrels with no problem. Ruger's 7.62x39 had a 308 bore.
 

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I think the Machinegunner misread the .303 as being .323 maybe.

~WH~
 
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