Am in need of some help group, due to the nasty ole broad Isabel, i have lost all relaoding books, and data, i forget who here it was but was given some loading for the 450 3-1/4" Nitro. If any have favorite loads for this round please post again. or e- mail me.

I would say about 84 grs. of RL-15 or 83 grs. of IMR-4831, I would use about 3 grs. of dacron filler with the RL-15 load....

You may have to go up or down a little with either load to find your proper POI at 50 yards.

Use a chronograph and try for 2100 FPS or a bit more.....

80grns of S335 gives me 2140fps with 500grn Speer AGS, and 2190 with 480grn Woodleighs. CCI mag primer, no filler needed or used.

82grns of the new S355 gives me 2180 with the 480grain woodleigs and regulates nicely.

NB these are South African Somchem powders.

What Ray said!!!!!!!!

Using 84 grains of Reloader 15 using a 480gr Woodleigh SP gives 2060 with 11.3tpsi. And of course a dacron filler.

I believe Ray is wrong on the IMR4831 load for the 450 3 1/4. The load I have and use is 95gr of IMR4831 getting 2130 fps. Think about it R-15 is a faster burning powder then IMR4831 so you would have to use more of IMR4831 then R-15.

Expert Shooter,
Thanks for the heads up 95 grs. is correct..

I have been shooting the 450-400-3.25" for the last few years and that IMR figure o 83 just came out of the typing fingers, I knew better, just habit....

95 grs. of IMR-4831 is the correct load...not 83 grs...for the 450-3.25"

Thanks all!! This has become my favorite rifle to play with and realy needed the loads.

Dave James
After you get a full power load that regulates, please try some 350 Hornady Round nose bullets with the same powder charge/filler and see how they shoot. Your velocity should be some where around 2300fps which makes a very good deer, pig, Black Bear load that will have almost the same trajectory to 200 yards as the 480/500gr. loads.
Recoil is somewhat reduced because of the lighter bullet. Give them a try and let us know how they shoot.

N.E. will do, but I'm lucky don't have to worry about regulateing, its a Ruger No-1

Dave
After I posted the above I thought I remembered you 450 Nitro was a No1. I am still curious to see if the 350's with the same powder charge as the 480/500 bullets will hit the same point of aim. In my 45/70 300,350, and 400grain bullets with the same powder charge do not.

Dave,
Since your gun is a Ruger No. 1 then all the load data from all of us is void, you can load that Ruger much hotter than the given loads should you desire, to what degree I don't know but I'd make book on 2350 or 2400 FPS...

Perhaps a email to Bowen or some of the converters could claify that matter....My load of 95 grs. would give you about 30,000 PSI, actually 14 tons I suspect, and the Ruger can take twice that if not more if the brass is up to it....

Thanks Ray, but more than likely will stick with what you'll have given me, when I was sighting it in useing your method for the iron and scope set up, I tried some full tilt boogie loads and in that ruger which is the 45-70 verison converted over, it will flat ring your bells. I changed scopes and put an old steel tube 3x weaver on it and it still only weights in at 8lbs on the scale. have been looking at having it rebarreled, in same caliber but with a heavy barrel, a smith on the Eastern Shore will do it, but am holding out trying to find a used 458 ruger bbl.