I was gracing the not-so literature award winning musings of the 8th edition Cartridges of the World last night and stumbled upon the write-up about the 450 Rigby.
Usually the author, well, the editor (since the author is no longer with us) places some ballistics below the write-up.
He didn't on this round.
It's a mid-1990's creation.
Anyone know anything about it, anyone have one?
Just a little curious.

Matt,

If you get a 460 Wby and remove the belt and change the shoulder from that rounded shoulder to a normal shoulder and remove the huge freebore of the 460 Wby, you have the 450 Rigby. 450 Dakota is the same.

Both the 450 Rigby/Dakota are a 416 Rigby necked up to 458 and then "Improved" to gain sufficient shoulder for head spacing.

Mike

I had the opportunity to fire a .450 Rigby on a custom Mauser action (I don't remember the make, but it was from a riflebuilder in Bloemfontein) in July. I know it was very effective on a springbok at 175 yards. That is all I can help you with. Recoil was invigorating.

Joel Slate
Slate & Associates, LLC
www.slatesafaris.com

7mm Rem Mag Page www.slatesafaris.com/7mm.htm

"Old Sarge" has a custom .450 Rigby that he simply adores. Do a "search" and you may find some of his related posts.

Matt77,

I interviewed a KYNAMCO staffer on the development of this cartridge; they did the development work, and I believe are the only ammunition source. I was writing an article on the .450" bore size and magazine rifles at the time.

The basics are a .458"/480 grain bullet (soft and solid) at 2,378 fps muzzle velocity, for 6288 ft-lbf muzzle energy.

If you roll your own necking a .416 Rigby case up will be a bit short according to KYNAMCO, I have not tried it myself. I think the dummy they gave me was an actual .450 cartridge.

It had some very good reports when it first came out, but I have not read anything recently. There are some users on AR, but AR users are, well AR users are a bit different... We don't do what everybody does.

I handled a Rigby (of London) rifle chambered in the .450, and it was wonderful I was sorry I didn't have a $9,000 bill in my wallet (the "show price" at that).

jim dodd

If the necked up .416 case is "short" the difference is so slight that you will be hard pressed to find it without a micrometer. Necked up .416's are fully functional and work jes' fahn, thankee. I respect Dave Little greatly but, after all, he is in business to sell ammo and components. If you insist on headstamped brass, Bertram makes them but I wouldn't bother unless I was going to Botswana. That seems to be the only country where it ever matters and sometimes not even there. Figure on a .450 Ackley, Atkins or Lott at lower pressure and you will know what it will do.

Horneber was supposed to make 450 Rigby brass, wasn't he?

Andy,

Horneber lists it in his catalog for 2.80 Euro bucks each.

Yes, Horneber is making brass for a bout $2 per case. I have a 450 Rigby rifle in progress and hopefully it will be done in a few weeks.

Oldsarge has sold me a few used cases based on the 416 Rigby brass and they look to be working just fine. The neck would be a little shorter but other than that I think using 416 Rigby brass to make the 450 Rigby would be the way to go. I have some BELL basic cases and will also be trying them out. Have fun.

Thanks everyone.
If it's made, someone at AR has one.
what's horneber's website?

From the source:

http://www.kynochammunition.co.uk/