303 in a 30-40 krag? - Graybeard Outdoors
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post #1 of 13 (permalink) Old 05-14-2020, 07:14 AM Thread Starter
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Default 303 in a 30-40 krag?

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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post #2 of 13 (permalink) Old 05-14-2020, 07:43 AM
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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.

303 in a 30-40 krag?-f2d57665-b146-4ba8-90e3-9558be86187c_1589456572185.jpeg

303 in a 30-40 krag?-b817efa9-2937-4a0a-b228-26b24a033bea_1589456591164.jpeg

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post #3 of 13 (permalink) Old 05-14-2020, 07:59 AM Thread Starter
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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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post #4 of 13 (permalink) Old 05-14-2020, 08:00 AM
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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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post #5 of 13 (permalink) Old 05-14-2020, 08:03 AM Thread Starter
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And this is why i ask first. Thanks
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post #6 of 13 (permalink) Old 05-14-2020, 08:11 AM
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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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post #7 of 13 (permalink) Old 05-22-2020, 08:21 PM
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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!

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post #8 of 13 (permalink) Old 05-22-2020, 09:16 PM
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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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post #9 of 13 (permalink) Old 05-23-2020, 07:11 AM Thread Starter
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even thought about pulling the bullets, removing the decapper pin from the dies , resizing to the krag and then reloading.
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post #10 of 13 (permalink) Old 05-23-2020, 09:46 AM
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scratchmark721 has an excellent idea there.
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