Heres an odd one - 8.15x46R

[stimpylu32]

Anyone have a clue were I can find some smokeless load data for this round , most of what I'm finding is either Black Powder and some ( very little ) of the pistol powders like Green Dot , Blue Dot & IMR 4227 .

The formed case looks like a monster 22 Hornet  , and from what I have been able to find , it mostly lives on cast bullets in the 175 to 210 grain range .

Any help would be great . 

stimpy

[leadbutt]

That sounds like one of the old Schultizn{sp} rounds found in the single shot rifles I have seen from the Swiss, you could try the Single Shot Express or maybe one of the black powder web sights, the powder companies have all ways been good enough to help out when I had one that wasn't the norm, try their web sites to

[BCB]

Limited data…

For the Lyman 338237 (190 grains)—23 grains of 3031

For the RWS boolit (151 grains)—30 grains of 4895

(Search RWS site)

Cartridges Of The World…

Good-luck…BCB

[Catfish]

The only load I could find was for a 150 gr. cast bullet. It is 27 gr. of IMR 3031. Vel. 1675 fps.

[torpedoman]

i was using 26 gr imr 3031 in my 815X46

[stimpylu32]

Thanks guys , this is going to be my winter project , a Handi rifle in 8.15 should make it another one of a kind . 

I have a couple of donor barrels to chose from , one is a BB 17 hmr that shoots like crap , tried just about everything you can think of to get it to shoot and no luck , so it looks like a project barrel , the milder steel used in the RF barrels should not be an issue with the low pressures of this round .

Now to deside on a bore dia. and twist rate to use , some drawings show it with a bore as large as .330 and as little as .320 ,but I'm thinking around a .323 ( 8mm ) should work well and still leave some room for up sizing cast bullets if need be .

What do you all think ?

stimpy

[mauser98us]

cases easily made from 30-30 or 32 special. Get her done

[jedman]

   Have you considered making it a 17 Hornet or a 17 Bee ?

[BCB]

I have a couple of donor barrels to chose from , one is a BB 17 hmr that shoots like crap , tried just about everything you can think of to get it to shoot and no luck , so it looks like a project barrel , the milder steel used in the RF barrels should not be an issue with the low pressures of this round .

I can't imagine the 17 caliber barrel having enough "meat" to be able to be rechamber to anything 0.323" diameter!  Won't the barrel walls be too thin?  Or am I reading this post incorrectly?

BCB

[stimpylu32]

BCB

Its one of the Bull barrels and has almost a full 7/8" OD , batt is dead on my cal. or I'd give you an exact measurement of the OD .

jedman

I considered the 17 Fire Ball but my fat little fingers would make it hell to load those bitty bullets . 

stimpy

[Gatofeo]

I wouldn't convert that rifle. You'd lose value and history by doing so.
I have an unbroken set of American Rifleman magazines, from 1929 to last month's issue (900-plus mags!).
In the 1950s and 1960s, particularly, many fine, old Scheutzen rifles -- brought back from Germany by G.I.s -- were converted to more popular calibers.
The result was that a lot of rifles were butchered by "garage gunsmiths" who ran chambering reamers in with an electric hand drill, and other horrors. Makes a fella want to cry! 
I'm still flabbergasted at the reader who, in the early 1950s, wrote in to ask if his Winchester 1873 rifle could be converted to .222 Remington!

I looked through my personal directory to my American Rifleman magazines and could find nothing on the 8.15X46R.
I don't find such a cartridge listed in Cartridges of the World, 8th edition, but I do find an 8X46R Sauer that seems to fit your description of looking like an overgrown .22 Hornet.
Is this the same cartridge?

[stimpylu32]

This may help .

http://stevespages.com/page8d.htm

3rd row over , almost to the bottom .

http://www.milsurps.com/showthread.php?t=17422

This will be done as a Re-bore & Re-chamber of an H&R 17hmr barrel , I'd never hack & chop an original rifle in that cal. 

stimpy