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Original Post (Thread Starter)
Odd Drilling Rifling?
#329554 07/01/2013 7:32 PM
by oskar
oskar
I have a no name Drilling circa 1925 with a 9.3x72R rifle barrel.

The lands are only .047 wide and the grooves are .147, six lands and grooves. The lands are very tall at nearly .010. The diameter between the grooves is .364 and the diameter between the lands is .3445

Can anyone give me some info on this barrel, type of bullet etc? Are these tall narrow lands common? How would you load for it?
Liked Replies
Re: Odd Drilling Rifling?
#329867 Jul 5th a 03:52 PM
by kuduae
kuduae
Paper patched bullets were rarely used in German hunting or target black powder loads. Other then the British, Germans most often used lubricated plain hard lead bullets. Two old 9.3mm factory swaged lead bullets:

left: RWS # R 9.3, 225 gr, .364" diameter with a .375" seating stop / guiding band. You may see the second band being stepped. This was the standard 9.3x72R black powder bullet weight. Loaded in front of 54 gr Cramer&Buchholz #6 "Nassbrand" black powder for a mv of 1500 fps. Used in the 9.3x82R the load was 69gr C&B #6, ballistics unknown.
Right: RWS # 15J, 190gr, .365" diameter with .372 stop band, for the 9.3x57R, but also used in the 72 for roebuck shooting.
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