Swedish Rolling Block Incoming

[DeaconKC]

Okay guys, I'm getting a Swedish Rolling Block in 12.7x44R. Sportered already, but the bore looks good in the pics. From what I understand the .500 S&W brass and dies will work for this, so does anyone here have any experience with this?
Thanks

[Tascosa Joe]

I have a twin to yours and it shoots like a dream. Original sporter sights dead on at 167yds. I bought my brass from Buffalo Arms, the first batch were made from 348 Win, the 2nd batch was from 50 Alaskan.  I use a 450 gr .512 from buffalo arms, 67gr 2F GOEX compacted and a Winchester Lg Rifle primer.   It uses 50-70 dies.

[Cap'n Redneck]

I can confirm that .500 S&W cases and dies will NOT work.
(.500 S&W cases will disappear down the chamber, get stuck in the forcing-cone and have to be knocked out from the muzzle end with a sturdy cleaning rod. Yep; been there, done that.)
.50 Alaskan cases is the way to go; just cut to length, trim, then fireform.
Be aware that some of these Swedish Rolling Blocks have had their chambers reamed to .50-70 Gov't. in modern times. 
A .50-70 cartridge is just a little to long & fat to fit an original 12,7x44 chamber.
So if a stock .50-70 case does fit your chamber you know you have "a Swede with an American upgrade"...!
.50-70 dies will do the trick, so will .56-50 Spencer-dies in a pinch...
If using reduced loads of blackpowder, try filling the air-space between powder and bullet with sesame seeds for added lubrication.

[Hair Trigger Jim]

Deacon, on the off chance you check this forum before the other one, AlOvera just posted some .50-70 dies for sale on the SASS Wire.

[Tascosa Joe]

My Swede will almost chamber a 50-70, but it lacks about 1/8th inch going all the way in and the rim is way too thick.

[Pay Dirt Norvelle]

I'm glad I ran into this thread as I have a Swede Rolling Block sitting in my safe that I really haven't looked at. This will make me get going.