any body have any experience with this cartridge
thanks in advance
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any body have any experience with this cartridge
thanks in advance
Which one of the varied 25-303 catridges are you asking after?
I have dies
Of all the 303 wildcats it makes the most sense
Used to be pretty common here when i was a kid. The interest in .303 based wildcats started before imported rifles in modern cartridges became available at the right price. Most of the them (.303/.25/.27/.22/.243/.35) were built on No1 Mk 3 SMLE actions so you have to watch the pressure. While the case dimensions and powder capacity vary amongst the wildcats preformance is generally in the .250/3000 sav range. Some rifles built on p14 actions get loaded more stoutly.
The .243Win and the cessation of ammo manufacture by Super and Riverbrand pretty much brought about their extinction here (Aust.).
I wasn t aware there were variants
I have lee dies and had to bump the shoulder down 50 thou for the case to chamber
50 thou or 5 thou? 50 seems an awful lot.Quote:
Originally Posted by bearfighter
I had one built on a P14 action.
It had been used as a target rifle when I bought it from Rod Satherly, Manchester Street, CHCH way back early 70's.
Had the barrel shortened (I think back then that member @gundoc was involved in that).
Very nice to shoot, very accurate.
The bolt ran as though on rollers. So smooth.
I used the 87 grain projectiles and the data from an Aussie reloading book (said it should be running at ~2900fps and that did for reds, goats, bunnies, and the odd possum).
So yeah, not much wrong with a 303-25.
I've seen a couple of photos on this forum and I'm quite sure that a member here has my old rifle.
I sold it to a CHCH guy way back...about 1974-1975.
Geez, I must be getting old!
EDIT: This guy...Nick Harvey reloading book.
https://sportingshooter.com.au/ask-u...or-the-303-25/
Might have misled you there bearfighter, the variants are in the .303/.22’s. 3 or 4 different case dimensions.Quote:
Originally Posted by bearfighter
Sent from my iPhone using Tapatalk
50 thou checked by licensed gunsmith
looking for some load information
will reduce loads or rechamber
Greetings, I would not rechamber, just size your cases to fit the chamber. Should not make any significant difference to your loads. The first thing would be to measure the barrel twist to see what projectiles should shoot in it. It may be a slow twist which would limit you to the lighter projectiles. Please get someone to mentor you with your load development. There is data out there but how safe it is is anybody's guess.Quote:
Originally Posted by bearfighter
Regards Grandpamac.
so HOW did you bump shoulder down 50thou????50 thou from what? or are you saying when fired the cases have grown so much you needed to make them 50 thou smaller than the after fired size??? if your dies are hitting base....thats your saami spec size give or take a flyshit..so if indeed your fired case is way bigger.... set your die to only move it just enough to chamber again.Quote:
Originally Posted by bearfighter
Just curios here, if you don't mind my asking.Quote:
Originally Posted by bearfighter
Is there such a qualification under NZQA?
I just had a quick look, in NZ there is a voluntary gunsmith register:
https://www.armsregister.com/gunsmit...pplication.pdf
You just need to be a Kiwi with a firearms license for that though.
Overseas people in NZ would need a NRA qualification in gunsmithing or similar.
I have been lazy and not researched it myself, is any such thing up and running in NZ?
Greetings again,
I managed to find a bit of info on the interweb. This is essentially a wildcat cartridge but it appears from the case dimensions that the original .303 case is left the same from the base to the body shoulder junction. The shoulder angle is increased to 20 degrees so part of the shoulder is set back during forming in your die. The barrel twist is likely to be 1 in 12" but still needs to be checked to be sure. Case capacity is between that of the .250 Savage and the .257 Roberts but as many of the .250-303 rifles are built on No1 Lee Enfields performance is likely to be closer to the Savage and perhaps a little lower.
Regards Grandpamac.
don t know how it works in NZ in canada we would have to have a machinist ticket to apply to a gun smithing school
Grampamac. my gun smith believes that the fella that chambered the gun didn't run the reamer far enough into the barrel. gun is built on a Mauser 96 action
Mickey Duck. never fired a round through the gun, we run a 303 case through the 250-303 lee dies and the case would not chamber. I believe we then used a 257 Roberts sizer die to bump the should back until the case would chamber in the gun. we trimmed the neck to the same length as the original specs.we then loaded 2 rounds with light loads and fire formed them to get the actual chamber dimensions . We then removed 50 thou from the bottom of the die, rounds will now chamber just need load information for shorten case
that makes sence.... re load data for shorter case...I WOULD start at low end of data you have and work up slowly.... if you wanted hotrod load would have a 25/06 so may not get right up to top end loads before your happy enough to stop there with accurate load.