Rebarreling a modern action to .303

kevin.303

CGN Ultra frequent flyer
Rating - 100%
123   0   0
Location
Dog River SK
i'm thinking it would be neat to have a modern bolt action chambered in .303 British. this has been discussed before, but since the Stevens action is so cheap i wonder if anyone has tried it yet? i've seen .311" barrels in the States, but only made by one or two companies.would have to use a magnum model, since the magnum case head is the same diameter as the rimmed case. maybe it would be better to opt for .30-40 Krag since .308" barrels are more common.
 
Last edited:
Pac-nor makes a 5 groove 1 in 10 303br .311" Stevens or Savage standard length action and you just pop a new head onto the bolt.
i'm sure many others make similar barrels.
 
yes was doing more research. decided to start off withe a Rem 700 SPS instead, in .300 WM. rebarrel and ream out to .303 epps. probably go with Pac-Nor or Montana Rifleman barrel
 
What about the magazine lips, wouldn't they have to be altered. Maybe with the .303 Epps, it might feed beter, but you may have to take that into consideration.
 
Bevan King makes excellent .311 barrels, and he's right here in Canada.

Had him put one on my Ross Model 10 Sporter. It is very accurate and the chamber is perfect, no bulged bases or oversize shoulders.

Ted
 
Last edited:
There are certain issues involved when barreling a modern, push feed bolt action to a rimmed cartridge. Primary among them is the extractor. Also, recessed bolt faces make it difficult, if not impossible, to headspace on the rim as the cartridge design intends.
Actions which feature non-rotating extractors work best. Examples of this would include such actions as the Ruger77, the Winchester M70, the Mauser, and, naturally, the P14.
The Savage could be utilized in one of two ways.
The first way would be to mill away most of the bolt recess, leaving only what would be necessary to hold the extractor. This would allow for about 60% of the circumference of the breech to be left to support the rim. This would work out OK.
Method two would entail the fabrication of a non-rotating extractor which would be attached to the gas baffle. It might be as easy to simply make up a new baffle which incorporates the extractor.
The Reminton 700 would also require significant modification in order to chamber it for the 303. Once again, modification of the bolt nose would be necessary in order to headspace on the rim. The use of a Sako extractor would allow an easily done modification. To forestall the hue and cry from those who have declared the Sako extractor conversion unsafe, let me say, the sako extractor in this mod is probably as well contained as that on a lee enfield. If safety is truly a concern though, one could use the Sako style baffle on the modified Remington bolt.
The M70 or the MRC1999 or the Ruger 77 could all be fairly easily done.
Feeding from any of these is quite another matter and wouldn't be all that easy to address. Maybe an easy way would be to set the rifle up to use a Lee Enfield magazine. Otherwise it is necessary to install an angled spacer, front and rear, in the magazine box. This makes it necessary to use a long action in order to have enough room in the box for the spacer. Regards, Bill.
 
does Bevan King have a website? what do his barrels cost on average? and if the case head of the .300 EM and .303 British are the same size, why so much modification to the extractor? wouldn't it work, with them being the same size?
 
Last edited:
Its not so much the extractor, its the boltface. The counterbore is deeper than the .303 rim is thick. On a Remington, if you face off the bolt until the counterbore is appropriate for the rim thickness, the lip that secures the extrator will be gone - therefore the need for a Sako style extractor.
 
I was lucky and found a nice BSA-sporterized P-14 already glass-bedded
and with a Timney trigger and rings. All it needed was refinishing the stock.

P-14%20_small.JPG


I've only had it out to the range once so far but it shot around 1.25".
Not bad for a 90 year-old milsurp. It's a bit heavy but for the investment
I'm not complaining. I'm thinking of having it reamed out to .303 Epps.

There seems to be quite a bit of interest in a modern .303, including
a Ruger Nº1 so chambered. Problem is the .303 is relatively unpopular
in the U.S. so we're unlikely to see any as a factory offering.

:) Stuart
 
Back
Top Bottom