ok, he stated 3200 fps like if thats what he had to have and betting on picking up 200 fps by AI'in a souper is a big gamble unless he runs it from a long pipe.
I can only run a 115 gr at 3000 from my 25 wssm and its basicly the same case capacity.
i just came across an Old artictal [guns & game ] on the 250 humdinger .. says australia's best all-rounder? its a crossing of the 243 an the 25-06
text an photos by breil jackson [writen up in the C O W #11 ] 1st gun was made in 1998 use a 1`-10 tw 23" barrel i have a measured drawing an with a diagram of the reamer from the pacific tool co. in the artical it has some loads ranging from 75gr to 120 gr. bullets.. the 120gr nosler mulwex ar2213 /46.0 @ 3014 fps at muzzle, never heard of mulwex? some one wrote under [in pen] the load [h- 4831] oal 2.830 it says all loads are are at max.. load 10% less to start... also shows a pic of the case with 45* angle shoulder..
with such a sharp angle i'd wonder how the case doesn't colaps putting in the bullet ?
i did a quick search on barrels an can't find a 1~8.5 barrel in .25 cal
when you order a barrel does it come threaded an crowned/bottoned ?
i 'm sure or realize i don't know how to ask the question[s] when talking [LL or e-mail] one of these barrel companys as exactly what i need
wild bills suggestion on lawton barrel seems to be a very good choice, but still open on this
i think if a 25-06 can knock a deer down i see no reason why the hummer or what ever its called souper improved can't ... as for varmints an long range paper its can be a contender as well, after reading the artical i'm not so impressed as i was to start... action isn't here yet an don't know what to do about barrel ordering either..
Last edited by Olio Tutto; 11-04-2007 at 11:32 AM.
Generaly the barrel will come to you just as a contured blank with the bore rifled and lapped , no crown , no chamber and no threads. You can order some that way for extra cost but I think your money is berrt spent with the smith actualy installing the barrel to the action.
I would think that the only thing between the 308 and the 30-06 case would be the 7x57. The 7x57 case is the parrent for the 6mm Remington , 257 roberts and several other wildcats , this case does have a bit more capacity than the 308 cause its longer but thats about it.
Improving a case to a 45 deg shoulder would be a bit steep for my liking , like you said the chance of colapsing the shoulder is alot higher.
I'm not sure exactly what it is that your wanting
1) if you want a 25-308 improved great have one built , but know that
your not going to run a 120gr bullet out at 3200fps , maybe once or
twice but not for long before somthing breaks.
2) if your wanting to run a 120gr bullet out at 3200fps then you need to
look at the 284 case as a minimum and a long barrel , the RSUM or
WSM would be a better parent.
But to answer your first question about the barrel twist , a 1-9 will work fine and many barrel makers offer that twist
Wild Bills idea sounds like the winner to me. I had a short action predator with a .308 bolt face and this was what I had decided on until I swapped it for another action with a mag boltface. None of my business, but why stick with the 243 or 308 case when a better alternative that will work with the same action is available? (Well its better IMO anyway.) Just was curious why the flat rejection of the 284 case?
Originally Posted by Wild_Bill
Hi look at the 25/284. You will get 25-06 performance in a short action have a wyats extended mag box fitted to a Remington action and you will be good to go.
I admit that I know just enough to be dangerous.....but dangerous at ever extending distances.
Hi Mulwex stands mulwala explosive company. They were renamed ADI, Mulwex AR2213 was the same burning rate as IMR4831, Then ADI released AR2213SC this is because it was a bit slower and the same as being sold to Hodgdon H4831SC so they did not hav to make extra propelants just for the Australian market. So the Mulwala factory still makes the powder here and holds the patents for the Extreem powders that are temperature stable.
Now Briel Jackson is in the 70's with cartrige design in my opinion and can't get beyond that.
As for barrels I now only use Lawton barrels as they hold current 1000yd world reccords and are the best finished barrels I have ever seen. They looy smother than a hand lapped button rifled barrel ant they are cut rifled.
So the things to think off,
What do you want?
Do you want to use a 308 based case?
Do you want to achieve 3200fps with a 120gr projectile?
Wichever is the most important to you should be your deciding factor.
So if you want a 308 case max out the capacity and you can safely go to 60 degrees on the shoulder they don't colapse I have one chamber with a 60 degree shoulder and another on the way for target shooting. JD Jones off SSK Barrels makes a lot off 60 degree shoulder angled cartriges with no issues I have had extensive discussions with him about the issues.
Now if 3200fps+ is the most important factor and you will be using a short action there is the 284Win case necked to 25 cal if you have a 308 boltface.
If you have a mag boltface action available the Remington SAUM case would be the best option for you. Also if you don't have an action a Remington or Lawton action is available for either.