I have searched and have not been able to find load data for the 450 NE with 300 gr bullets.

I have a Ruger #1 and would like to load to about 2500 fps. Should be very doable but I have no experience with this round and cant find any data.

Any help is appreciated.
Thanks.

To keep it simple, I would begin with the powder charge used with 480-grain bullets and use the 300 grainers. The 75% rule would call for 350-grain bullets but the 300s would just go a bit faster. Use a chronograph and target the load and increase the powder slowly and safely until desired velocity is reached.
Cal

Cal is eminently correct...just what I do and many others when doing the odd ones or wildcats.

One thing I do is get an H2O volume weight, start with a cartridge of similar case volume...The 416 Rigby is just a bit larger and so are several wildcats you can find on Ammo Guide.

Pick out a load for the bullet weight you want then start a bit below the bottom listed load and work up slowly.

You can go online to Hodgden's online powder and maybe find a load for the 416 Rigby that will start you out or any reloading manual with Rigby data will work also.

Barns loads for the 416 Rigby/300 gr XFB uses RL-19/22, H4350/H4831, XMR4350 and IMR 4831 in the 100-106 gr range at the low end for ~2750 to 2850 fs range...I would start ~15% less and work up.

There is only 0.008" difference in bullet diameter and 3-6 gr lighter in the case volume, so the cross over is just about perfect, no getting your shorts all bunched up over minutia and mucking up your load development fun.

300 gr seems a bit light but that depends on what you want to do with it and is your choice anyhow.

Luck with your project.

If you want velocity, you can surely get it with the #1 in 450 3 1/4 . . I shoot that bullet in my Win Mag at 2700 fps. . I imagine you can beat that by 200 fps.
That bullet cuts a huge hole thru the animals I've shot with it.
Since I get 2900 fps with the 300 gr TSX from the 416 Remington and that load has proven to kill bear as good or better than anything I've ever shot or seen used you would have an awesome general purpose hunting round.


( just my plug for light fast big bore monometal expanding bullets)

Remember to not go too low on the powder capacity with slow rifle powders.
If your desired velocity is only 2500 fps. I myself would accomplish that by using slow powders, 4831 and slower burn.rate. but maintain case capacity.

I think it was the old Hornady manual that had a warning attached to the 460 Weatherby about Not loading powder charges lighter than those listed. Due to the possibility of a hangfire. The warning was. " Hang fires of this magnitude can be quite unpleasant. "


I do know that the closest I ever came to blowing up a rifle was from too light a powder charge.

quote:

Originally posted by cal pappas:
To keep it simple, I would begin with the powder charge used with 480-grain bullets and use the 300 grainers. The 75% rule would call for 350-grain bullets but the 300s would just go a bit faster. Use a chronograph and target the load and increase the powder slowly and safely until desired velocity is reached.
Cal

Ditto
I use either 350gr Hornady's or 350gr Hawk bullets on top of my 480gr load. Softer shooting but a bit snappier pretty much to point of aim. Good enough that the pigs don't notice.

Has anyone chronographed the 350s on the heavier bullets powder charge. ? Just curious??

quote:

Originally posted by Cold Trigger Finger:
Has anyone chronographed the 350s on the heavier bullets powder charge. ? Just curious??

2300-2350 fps.
Cal

Thanks for all the help. I may use 350 gr
but was thinking 300 gr at 2500 would be similar to 375H&H ballistics except for ballistic coefficient.

I plan to use this for whitetail deer now that ohio allows rifles for straight walled cases including the Sharps calibers. I figure this is about as close to 45-120 as you can get.

Thanks for the rigby info. I currently load mid 90s of Imr4831 for mine for 400gr bullet.

I figure that with the Ruger I have some pressure forgiveness since most of the load data I have seen is for lower pressure double regulation as is the data in Any Shot You Want.

Thanks again

If you are going to be driving a 300gr bullet at 2500fps you need to pick your bullets carefully.

The normal 300gr HP 45/70 bullets are designed to operate at around 1800fps. They kill deer and pigs great at that velocity.

At 2500fps, I would take a look at the Barnes X or the North Fork.

I can say that the 350gr Hornady RN works well on deer and pigs at @2330fps, as I have used that bullet in my 450 No2 double rifle on several of them.