450 Extreme?

[BulletBrain]

Anyone ever try this.  My 45 Colt Carbine has a long chamber but a short throat.

Warm 45 Colt Loads with Longshot powder shoot fairly consistent.  Hot 45 Colt Loads (30,000psi) with surplus powder 820PD(similar to H110) are not as consistent.  I remember on Beartooth board that someone said this powder needed lots of pressure to burn consistent.  So I'm looking at my chamber, it won't chamber a 454 Casull empty but it get's close.  It will chamber this cartridge 450 Extreme shown in the Hodgdon Annual as a trimmed 454.  It will chamber a loaded round with a Sierra bullet with about .010 clearence but not a Hornady bullet get's crushed in the grooves.  The Hornady bullet has a longer shoulder in front of the crimping groove.  So I loaded up some at the starting 40,000psi level with some 300 grain Sierra's.  It seems to shoot more consistent but I will have to get a scope and a chronograph out to confirm.

By the way I picked this up at Scheels for $159.00 on clearance at Christmas.  That's not a misprint on my part but it might have been on theirs.  It had to be the "Handi Deal of the Decade".

[gcrank1]

Trim the 'overlong' brass to within .005 to .010 (max) of chamber length and load bullets to the rifling. If you resize cases they will have enough neck tension so crimping isnt neccessary. If using lead bullets use a dia. that will fit the fully chamber formed neck (no resizing) 'comfortably' snug. Again, no crimp.
Should shoot better than you can with open sights.

[rwadley]

My carbine easily chambers 454 Casull rounds (Buffalo Bore 300 gr).  Are these safe to fire?

[bikerbeans]

Anyone ever try this.  My 45 Colt Carbine has a long chamber but a short throat.

Warm 45 Colt Loads with Longshot powder shoot fairly consistent.  Hot 45 Colt Loads (30,000psi) with surplus powder 820PD(similar to H110) are not as consistent.  I remember on Beartooth board that someone said this powder needed lots of pressure to burn consistent.  So I'm looking at my chamber, it won't chamber a 454 Casull empty but it get's close.  It will chamber this cartridge 450 Extreme shown in the Hodgdon Annual as a trimmed 454.  It will chamber a loaded round with a Sierra bullet with about .010 clearence but not a Hornady bullet get's crushed in the grooves.  The Hornady bullet has a longer shoulder in front of the crimping groove.  So I loaded up some at the starting 40,000psi level with some 300 grain Sierra's.  It seems to shoot more consistent but I will have to get a scope and a chronograph out to confirm.


By the way I picked this up at Scheels for $159.00 on clearance at Christmas.  That's not a misprint on my part but it might have been on theirs.  It had to be the "Handi Deal of the Decade".

Bullet,
 
If you rent the GBO 454 Cas chamber reamer then you will not have to trim your brass and will probably improve your rifle's throat.   If the place you bought your 45 carbine at has more at that price I would suggest you go buy all of them.
 
BB

[BulletBrain]

rwadley, as long as you have a rifle frame, probably ok, most would say, others would say no, but I would dot it, as long as the bullet wasn't jammed in the lands, but then maybe I still would, but I would think about it longer.
 
bikerbeans, someday I might rechamber to 454 casull, it would make sharing with my revolver easier,  but I could sell or trade just as easy some day,  Also, I found my target load, trimmed 454 brass (starline), BR4 primer, 32 grains of 820 Pull Down, 200 grain FTX,  3 inch groups at 200 yards just a little under at 200 just a little over at 100, I think it would drop a deer, although it's getting slow at 200,  I'd like to try the ftx 250,  right now it appears to be ideal for Javelina.   oh it was the last one at Reno Scheels some years back.  It wears the 45-70 barrel more often these days,