Home | Ezine | Forums | Links | Contact
NitroExpress.com: .450 Short Mag.

View recent messages : 24 hours | 48 hours | 7 days | 14 days | 30 days | 60 days | More Smilies


*** Enjoy NitroExpress.com? Participate and join in. ***

Shooting & Reloading - Mausers, Big Bores and others >> Big Bore Rifles

Pages: 1
Judson
.300 member


Reged: 21/09/05
Posts: 192
Loc: St. Albans Maine U.S.A.
.450 Short Mag.
      #62431 - 13/09/06 09:53 AM


I have been playing with the .300 or .325 Winchester short mag necked up to .458. Curtis, a guy who helpes in my shop and a friend had me help him put one togther. The barrel is 22" long with a 2.5" brake so the effective length is only 19.5" The rifle is based on a 98 Mauser and weighs in at just over 9 pounds scope and all. The ballistics Curtis is gettiny is 300 grain bullit with 61 grains of IMR 4198 and large rifle primers = 2595 F.P.S. 350 grain bullets with 58 grains of the same powder are going 2380 F.P.S. Not too bad for a carbine! This rifle/ cartridge should work out well in the thick stuff. Now all I have to do is get the time to build my own .450 Short Mag.

--------------------
It is the small calibers that are the biggest bores.


Post Extras: Print Post   Remind Me!   Notify Moderator  
DarylS
.700 member


Reged: 10/08/05
Posts: 27506
Loc: Beautiful British Columbia, Ca...
Re: .450 Short Mag. [Re: Judson]
      #63509 - 04/10/06 12:05 PM

I built up my own short mag, using a Magnum M70 Winchester that was previously a slow .264 mag.
: After purchasing a Shilen .45 barrel, contoured heavy mag. and 22" long, I chambered it with a .450 Alaskan reamer, by hand.
; I turn off the rims of the .348 brass, cut a new extractor groove and neck up to .50m then back down to take a .45 bullet for fireforming, positioning the shoudle rin the correct place for headspacing.
: Another method is to open the .348 brass to .375. I then turn 500gr. cast bullet noses down to .375 and load with 45gr. H4895, seated out to engage the rifling heavily. These lubricated wadcutter shoot quite well to 100 meters, but best of all, are easy to shoot and fireform the brass out to the full size, perfectly. They make good offhand practise.
: This case, somewhat larger than the standard magnum case, results in a 2.1", bottle necked .458 with the same or slightly greater capacity than the .458Win.Mag. I use the same Reloader #7 loads listed for the .458WinMag in the Barnes manual with 350"X" and 400gr. Barnes Spitzer bullets. My accuracy is amazing, considering the 2X Leupold scope. These loads print on one another and hold to under 1" at 100 meters range.
; This short mag is a keeper.
: On the left is the old .450 Alaskan, the rimmed .348 necked up to .458 and blown out. This was designed by Harold Fuller of Alaska. My version, has the rim turned off and extractor groove cut. The new rim fits the mag bolt face of my Winchester M70 perfectly. Time on the lathe is less than 1 minute per case.
; The pictured bullets are 505gr. cast from a Lee mould. They shoot into 1" at 100 yards with a moderately light load at 2,000fps. This should make a good deep penetrating load for moose, elk and big bears. The 350 "X" at 2,400fps are flat enough shooting for an easy 300yards range, along with the 400gr. Spitzers at 2,300fps, neither are hot loads in my rifle.


--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1



Extra information
0 registered and 51 anonymous users are browsing this forum.

Moderator:   

Print Topic

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Topic views: 1774

Rate this topic

Jump to

Contact Us NitroExpress.com

Powered by UBB.threads™ 6.5.5


Home | Ezine | Forums | Links | Contact


Copyright 2003 to 2011 - all rights reserved