what is the difference between these two cartridges?

They are Ballistically very simular. As long as the 450 Ribgy and the 450 3 1/4 " Nitro Express , arn,t mixed up......--------------------The 460Whby came out as a factory round in the late 50,s I believe it was....It was basically a necked378 case. Pushed a 500 gr bullet Pretty fast.........Every one commented on it........The 450 Rigby is as I undrestand it ,basicallyis a necked up 416 rigby case ...As case capacity is roughly the same they will do the same velocity..............If they are loaded to 2500 fps with a 500 gr bullet they seem to work very well according to what thier owners say about them.......

I think the biggest difference is that the 460 has a belt and the Rigby doesn't


Fred

so with performance out of the way then would the weatherby be the way to go as far as availability of brass?

jstltrs

The 450 Rigby is actually a 416 Rigby Improved necked up. Essentially it is the same as the 450 Dakota.

Brass for the 460 is a better situation but making 450 Rigbys from 416 Rigbys could hardly be called a big deal. Supposedly Norma is going to make 450 Rigby brass.

Apart from the belted case the factory ammo for the 460 is loaded to the potential of the case capacity whereas the 450 Rigby is loaded back by about 200 f/s.

The other difference, assuming standard reamers, is the 460 has a very long freebore which brings both pluses and minuses.

This is just my personal opinion/feeling but if I was having a nice custom rifle made on a Mauser type action I would take the 450 Rigby. On the other hand I would not want a done up Weatherby chambered in 450 Rigby.

Mike

"In conversation with Mr. Roberts (the owner of the rifle at the time) I (JARRETT of Jarrett Rifles) mentioned the possibility of necking up the .416 Rigby to 45 caliber. Mr. Roberts said he had been doing some work along those lines and produced a reamer print. He had not done one yet, so he didn’t have any performance data. With his blessings to make the .450 Rigby, I changed the lead angle on the front and had a reamer made."

Little known insight into the creation of the Rigby 450.

The .450 Rigby has been anointed exceedingly cool by the guys who count on this site, while the .460 Weatherby has been branded crass and tasteless by the same experts.



One has a belt, the other doesn't. Otherwise, they are 99% identical.

quote:

Originally posted by I Bin Therbefor:
"In conversation with Mr. Roberts (the owner of the rifle at the time) I (JARRETT of Jarrett Rifles) mentioned the possibility of necking up the .416 Rigby to 45 caliber. Mr. Roberts said he had been doing some work along those lines and produced a reamer print. He had not done one yet, so he didn’t have any performance data. With his blessings to make the .450 Rigby, I changed the lead angle on the front and had a reamer made."

Little known insight into the creation of the Rigby 450.

1995, eh?

I Bin
THerbefor
Can the same be said of 7STW
AK

now i have read the 450 dakota is a 450 rigby.
how's the 76 quality? brass looks pretty spendy but it's there.

I prefer the Belt.....When the Poop contacts the wind machine I want the smoke pole to go BANG every time ... Belts help that to happen...Plus the 460 has been there done that ... True some people who used it Hate it .. But those I have talked to liked it....The 458 Lott is great but I may turn my Lott into a 460............If I,m going to have more than a 458 win mag I probably ought to relly do it up...

quote:

Originally posted by Mike McGuire:

The other difference, assuming standard reamers, is the 460 has a very long freebore which brings both pluses and minuses.


Mike

Why does the 460 normally have a very long freebore?

quote:

Originally posted by gumboot458:
I want the smoke pole to go BANG every time ... Belts help that to happen...

Huh??

quote:

Why does the 460 normally have a very long freebore?

It goes back to the original design of the calibre. The 378 also has a very long freebore and the other Wby calibres have less.

The freebore basically achieves two things. Firstly, with high pressure loads you are less likley to suffer from pressure spikes because of barrel fouling conditions or other variables.

Secondly, it allows you to use a faster powder for given case capacity for bore size. Where this can be of value is when considering available powders.

For example, a particular case capacity for a given bore size could mean that available powders are either too fast or too slow for optimum or full potential velocity. If the calibre was then chambered with a freebored section then the powders that were previously too slow might now be just right.

Mike

When Weatherby designed the .378 case, he went to the largest model he could find, the .416 Rigby, and added a belt because all his cartridges had belts and everyone knew that "if'n yer din't have a belt, it weren't no magnum!" This is complete twaddle but it sold a lot of rifles. Unfortunately, belts take up room and I'd rather have the extra magazine capacity. My .450 Rigby uses load data from the Weatherby, kindly provided by Dakota. Yeah, ballistically there isn't a hair's worth of difference among the three. The Rigby/Dakota is cool because it isn't overloaded. That's all. If you have a Weatherby and want a more comfortable, and equally effective DGR, just cut your velocity back to around 2250-2300 and you will be shooting a closet Rigby. It's just that if you have a tarted up Weatherby rifle, you don't get the cool pith helmet and mustache!