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I just came into possession of a beautiful example of a Danish Rolling block. I've found ammo, but it comes in two varieties: 11.7x51 and 11.7x56.
I'm thinking either somebody tells me which one I need or I cast the chamber and measure it.
Anybody care to tell me how to do a chamber cast. I have an ingot of metal for this purpose from Rotometals.
thanks in advance
dale in Louisiana
Chickenthief knows these backwards and forwards and has posted on them here at least a couple of times. Might try to search for his posts.
Yeah.
The 56 is ultra rare (under 200 ever made), so not that one!
It's a 51 BUT
Slug your barrel and follow my explanasion.
In the days 5 different production lines were set up and they each had their own proofing tools made by each foreman.
So a GO barrel can be anything from .443"-.463".
No problem with BP and a pure lead slug but when converted to smokeless and jacketed it became a big problem.
A bullet that was in the broad middle was chosen and the chambers that wat tight had a biiiiig leade/throat cut that would size a jacketed bullet down and not raise pressures.
Thus it would appear that most Danes will chamber a 56mm case but in reality the 51mm is the correst one.
I use full length 45-70 brass with the rim trimmed down in mine. Seat long and load 80 grains under a Lee 405-459-HB, that works every time!
Top rimfire with 60gr of BP
Bottom centerfire
Note the difference in bullet diameter!
http://i295.photobucket.com/albums/m...psfd091cf3.jpg
http://i295.photobucket.com/albums/m...ps864818c6.jpg
http://i295.photobucket.com/albums/m...ps5e54a7a3.jpg
Chickenthief-
Thanks, buddy! I slogged around reading your other posts and arrived at the 51mm conclusion. The hammer on my gun is intact. I miked the rear of the chamber and it appears to be thirteen or fourteen thousandths larger than the .45-70 cases I have. I ordered (at great expense) some ammo from Buffalo Arms as well as some .348 Winchester cases to play with to see if I can make my own.
The barrel does appear to be about .462. I have a bunch of 40/1 alloy that I may try to see if this thing will shoot well. The barrel looks great and I am hopeful.
dale in Louisiana
I might still have contact info from a person who wanted to sell one of these really cheap but the wood was worm eaten really bad. I believe it could be patched with bedding compound. Am I correct in understanding that many of these were rechambered to 45-70 at one time? If so I may buy it.
Well yes and no!Quote:
Originally Posted by smkummer
A 45-70 remaer was passed through so it will chamber the larger 45-70 rim, but the wider/more conical Dane chamber is still there and the cases will swell (sewerly for 45-70 resizing) at firing.
A modified 45-70 case fired in my Dane on the left (note bulge) and standard 45-70 on the right.
The 45-70 is @ .498" at the widest and my Dane is @ .5095"
http://i295.photobucket.com/albums/m...ps2c8d75c8.jpg
Look at my posts in "Almost 45-70", I, too, had to do a lot of research to figure out this beautiful beast... I was lucky! Mine came with a set of RCBS dies and several types of modified brass (NOT 45-70). Just do a chamber and bore cast, it will help you a GREAT deal!