Author Topic: 11.7x53 Danish rolling block (Read 1680 times)

jmm03 · « **on:** October 28, 2004, 12:23:51 PM »

Hi all,I am told that one can fireform .348 winchester brass to form 11.7.Does anyone have experience doing this and if so would you mind running me through the best way.Thanks,jim

marlinman93 · « **Reply #1 on:** October 28, 2004, 05:03:15 PM »

Actually the .45-70 is a better choice to make cases from. The 11.7x51 Danish is a .514" base, with a .579" rim diameter, while the .45-70m is a .500" base and .600" rim. It forms out nicely to the Danish, and doesn't need the rim trimmed like the .348 case does. The .348 is a .553" base and .610 rim, so it needs a bit of work to fit the Danish caliber. Also, .348 cases are pretty expensive to start with, so save yourself some money. The final clincher is you'll split some cases upsizing .348 to .45 caliber for the 11.7 Danish.
Hope this helps.

jmm03 · « **Reply #2 on:** October 28, 2004, 05:16:23 PM »

Thanks for your help Marlinman.Should I just go ahead and load up some 45-70 rounds and fireform them from a test load,or should I do the powder,cornmeal (or filler) and wad method? Its the second method that i'm not real clear about and I like to err on the side of caution.Regards,jim

marlinman93 · « **Reply #3 on:** October 29, 2004, 10:58:33 AM »

No need to fire form the .45-70 brass. Simply run it through your full length resizing die, cut to length, and load them up to your recommended loads. They should work fine. The .45-70 case is 2.10" and the Danish case is 2.01", so very little trimming is needed. In fact, don't trim at all until you run the first fully sized case into your chamber, to see how it fits. Some chambers are a bit long, so you'll want to test fit, and trim to fit your rifle's chamber. That way you'll get the optimum accuracy.
Hope this helps.

marlinman93 · « **Reply #4 on:** October 29, 2004, 11:01:46 AM »

One more small thing; the 11.7 Danish Rolling Block is actually a 11.7x51Rmm, not 11.7x53mm. Use .45-70 loads reduced by 1(one) grain of powder.

kodiak1 · « **Reply #5 on:** September 07, 2005, 05:40:31 PM »

When you got your 45-70 brass loaded did you have any trouble getting them to touch off when firing?
I did with mine the hammer wouldn't touch the firing pin.
With the 348 brass I have only had one out of the 50 and it only did it on the first firing of that round. after reloading it it was fine.
What are you using for bullets 405 Grn Hollow bases .459?

marlinman93 · « **Reply #6 on:** September 08, 2005, 12:30:42 PM »

Kodiak,
I have heard that some rifles like the thicker rims like the .348, but mine had no misfires with .45-70 cases. I tried a few cases with just a primer, before going through the rest of reloading, just in case that was a problem.
I can't remember what bullet I used, and the gun has been gone for quite some time. I replaced it with a #1 sporting Roller in .44 SBN.

John Traveler1 · « **Reply #7 on:** September 08, 2005, 04:48:05 PM »

I've had opportunity to slug a few 11.7 danish barrels, and find that they run on the large size for standard .45-70 bullets. The ones I measured were 0.463", 0.464", and 0.465". The 350-405 grain hollowbase .45-70 bullets shoot fine in these groove diameters.

kodiak1 · « **Reply #8 on:** September 09, 2005, 04:54:24 PM »

Havehad very good results with the Lee .459 Hollow Base in 405 Grn.