I have not, apparently, been looking in the right place for load information. I have looked for load data for the 500 gr premium soft point in all sorts of places but can't find anything acceptable. the load data I got from Geoff at Woodleigh only chrono's at 1900 fps. Hornady's load data for their DGX moves the bullet out in the neighborhood of 2200 but I don't like the bullet performance of the DGX. I have most US available powders available so any help will be greatly appreciated. I am looking to get in the neighborhood of 2125-2150 fps.

I load 106gr IMR4831 over a Fed 215 for the Woodleigh softs. I got the load from Butch Searcy, that is his regulation load. Around 2175 for me. I cut back to 104gr for Woodleigh solids for the same velocity.

Yep, IMR 4831 will get you there. Start at around 105 and work up.

If you have something other than a double (Ruger conversion), you can get about 115 grains under that bullet for 2350 fps. BUT NOT IN A DOUBLE

I use IMR4831 too. However, my load is 102 grains, F215M and 500 grain Woodleigh SN and I am getting between 2050 and 2100 fps over the chronograph. I tried 106 grains and got velocities approaching 2300 fps. I would suggest that you start low and work up, shooting over a chronograph.

George Hoffman recommended H4831 in the 470 NE.
I do too.
It is slower than the IMR-4831, so you will need a bit more powder to reach same velocity at even lower pressure.

Also, the H4831 Extreme (either Long Cut or Short Cut) is less temperature sensitive,
another reason it is better than IMR-4831.

I have found that, depending on the make of the 500-grain bullet, 107 to 109 grains of H4831 works great in a Merkel 140-2 of 470 NE persuasion.

I no longer use RL-15 and filler in the 470 NE.

I use 105 gr of H4831 and 500 gr Brass solids that I machine in my Searcy .470NE double. I shot an Ele broadside with one of these and found the bullet just sticking out of the skin on the OFF side. -Rob

Have never had a Chrono so can't really advise you. I weighed charges from several Federal factory rounds and they contained 92.7grs of what appeared to be RL15. I called Federal and they said it was indeed RL15 bulk powder. I can't actually remember what I charge i used as i gave the reloading card to the buyer along with dies and all my ammunition. I do know it was RL15 with about 6grs of dacron filler,215 primer and Woodleigh softs and solids. The Elephant I killed was with Federal factory loads. Never actually used handloads for anything but practice. To tell the truth I found the Dacron that blew out the muzzel to be distracting. It was very visible.

Butch's load of 105g-106g of IMR4831 is good if you
are using Norma brass.

If using BELL brass, which is thicker, start at about
102g and work your way up.

Also, Hornady brass gave me the same results as Norma.

If you go to the Double Rifle Bullet of the Future thread and go to page 6 you can see data that was done on many different bullets in 470.

Thanks for the starting points gentlemen. This gives me plenty of time to get something appropriate worked up and lots of barrel time. The barrels are new as is the wood. It is a Blaser S2 and is terribly accurate. Don't like the looks of the regulation fixture at the front but it makes up for it in the accuracy department.
I do have a chronograph and will be very careful. Most all of the brass I have is Jamison. And I have plenty of that. It is very apparently thicker than the Norma that I bought and maybe close to the Hornady that I have tried.
Again, thanks for your help. It is greatly appreciated.

I'm using either 87gr of RL15 (with Kynoch wad) or 106gr of IMR4831 with about any 500gr soft nose bullet. These work well in both of my doubles--Merkel and Searcy. For solids, I drop down 1 or 2gr of powder. The muzzle velocity averages 2150-2175.

I have mostly used IMR-4831, H-4831 and RL-15.

If I want a frog stomper I use 105 grs of either H or IMR 4831..

My buffalo load is a load of 85 grs. of RL-15 and a Kynoch wad or 5 grs. of DACRON for 2020 FPS with a Woodleigh 500 gr. soft or solid, or a North Fork cup point..It hammers buffalo to the ground but doesn't hammer me. It's accurate and fast recovery from recoil for the second shot.

I recommend you get yourself a copy of Graeme Wright's book " Shooting the British Double Rifle" Published by the SSAA Big Game Rifle Club. (SSAA is the Sporting Shooters Association OF Australia). There is a wealth of information in there on many double rifle calibres. If you are loading for a double rifle the regulating velocity may vary a bit depending on the Powder used. There are 17 loads listed in that book for 7 powders (10 if you include the 3 ADI/Hodgdon equivalents), but there is a lot of information that you need to read and understand before working up a load so I am reluctant to just quote a load from it.

I shot my .470 this morning. Load is as listed above, 102 grains of IMR4831, F215M primer and 500 grain Woodleigh Soft Point. I chronographed all shots. Average velocity was 2086 fps, average for the right barrel was a little less and average for the left barrel was a little more.

In Australia we often use the Aus made ADI (Aus Defence Industry) Powder AR-2209 (Similar to Hodgden 4350) with approx 100 to 104 grns OR with filler (Better) 94grns for a MV of 2100+fps.
Note;NORMA cases used and velocity can be quite different from rifle to rifle so start low and invest in a Chronograph.

338, I did get a copy of Mr Wright's book and have read it from front to rear twice(actually I didn't look at the pictures the second time and read the words). I was interested in more data than was provided and got some really good starting points. I know that I can get over 2200 fps using Hornady's load data but don't need that much, just trying to duplicate the 2125-2150 fps with the Woodleigh 500 gr. I tried the Hornady DGX in a 458 Lott in August in Zim on a cape buffalo and wasn't impressed with the bullet performance. I think the jacket is too brittle and doesn't hold together. Used the 470 NE last year in Mozambique and would have taken it this year but the stock cracked and it was out for repairs when I had to submit the paperwork for firearms. Hopefully this wood will hold up for more than 800 rounds because it looks like I'm in for some load development.
I'm new to this site and it seems to be pretty user friendly, I like it. Thanks for the suggestions and help

A double is a one load gun IMO, find the load that shoots "to zero" at 75 yards, and that's the load to use, whatever the velocity at least within reason...A 470 should run at 2000 to 2150 FPS and it kills exceptionally well at those velocities.

Some folks tend to try and run a double the same way they would work up loads for a bolt gun and thats a mistake IMO, you may work up a 1 inch load but it might shoot 3 ft. high and 1 ft. left or whatever.

Find the load that shots to center, and your done, go hunting.