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weird catridge, need safe loading info
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ive come here thru a line of other forums and have gotten this address and hopefull i can get some info here.. i will be blowing out a case in the near future and will be giving the case capacaty and bullet weight is about 200 grains, will come forward with all this info as i get it. thanks.dave.. here is the data that i ahve so far that ive been asking load for.


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i guess there is no case name and this designation came from c and h, probably thier name to identify it.. ive been told by a person at lelier and beloit (SP) to use 30/40 craig info which says 8 grains unique is a light load.. do any of you have any experience with drillings.. sorry to intrude here but im in a crunch,,all adeas appreciated, please state your experience with your suggestions so i can sort out where the suggestions are comming from.. . thanks the original post was similar to this.

i need surely safe starting load for 9.3 x 72r/360 drilling.. this is not a heavey gun like a .366, or suel, this is a thin barreled 7 pound three barreled gun,,

i want to stay within safe limits for a small
diameter breach three barreled gun..
the smithy says the bore is .360, i get .362 at
muzzel but im not a smith and i didnt drive this one
thru.. the owner of c and h says its the caliber
mentioned above and is sending me the dies.. this
weirdo case had a steel base and coiled? brass upper part
of the case.. a german idea circa 1926.. the ferosafe
cast shows a .363 diameter groove diameter at one inch
above the case into a very long lead. as i
said the dies comming from c and h, the cases coming
from l and l...
.360 and .365 30/1 bullets coming
from al at whitehorse bullets.. i also have 3/4 inch
teflon tape, (two wraps yields about .004- .005), and typeing
paper..wax checks, green foam, fillers etc. the
dies have a .363 expander (have recived them and its been shipped with .368) the bullets are
plain lead base 190 grain comming lubed..30/1 lead- tin. i need a
starting load to blow out some cases and see what will
come within a four foot circle at 100 yards..

the
books show what look like about 8 grains of unique are
pretty safe in alot of lead bullets loads in this
area..

would it be ok to start with the .365 bullet if
i have a .360 bore..?? or should i see what happens
with the .360 with a couple sheets of toilet paper
over the powder(8 grns unique) to seal it even tho its possible i
have a .362/.363 bore? the bore could be choked.... any comments welcome.. i will add any data that you will need to help with this if you request it.. thanks dave
 
Posts: 249 | Location: central montana | Registered: 17 June 2004Reply With Quote
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Posts: 1102 | Location: Denmark | Registered: 15 October 2001Reply With Quote
<eldeguello>
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I found one load - 20 grains of 4759 with a 200-grain bullet (NONTE). MV is not given, but can't be much over 1300-1400 FPS. This would be about what that cartridge would have produced with a case full of black powder.



Amazingly, Cartridges of the World gives no loading data for any of the old black powder 9.3's with smokeless powder. However, I think you could use any 32/40 or 38/55 STARTING load data that use IMR 3031, H4895 or IMR 4064 as a starting point.



Quote:

would it be ok to start with the .365 bullet if

i have a .360 bore..?? or should i see what happens

with the .360 with a couple sheets of toilet paper

over the powder(8 grns unique) to seal it even tho its possible i

have a .362/.363 bore? the bore could be choked.... any comments welcome.. i will add any data that you will need to help with this if you request it.. thanks dave < !--color-->







Dave, take a fired case, and see if you can drop one of those .365" bullets into it. IF the bullet drops freely into the fired case neck, that means the chamber neck portion will permit the case to expand enough to freely release its grip on the bullet when fired. If it does, it is OK to use the .365" bullets. If not, DON'T use them!!



Quote:

this

weirdo case had a steel base and coiled? brass upper part

of the case.. a german idea circa 1926..


British/European idea circa 1865 - vis .577 Snider/ .577/.450 Martini-Henry.
 
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I looked thru several reference manuals on this and find nothing but confusion. There are no less than 4 different cartridges with the designation 9.3x72R, but I find none with the /360 on the end. Two different diameters for bullets are designated, .366" and .377". One of the cases is a bottle neck cartridge. This is however, a common circumstance with the older combination guns of Europe. I hope the dies that C&H are sending are the right ones! Can you access a copy of Ken Howell's "Designing and Forming Custom Cartridges"?

I interpret from your post however that you are trying to fire form cases for the gun, and thus I'm not really sure what you're dealing with. First off, I'd strongly urge you to NOT use the steel head/coiled brass cases if you are considering that. They are probably unsafe, and they probably have some value as collectables.

As to fireforming cases, the Unique load will probably work if you want to use that. Most will use Cream of Wheat filler above the powder with a tissue plug and shoot without a bullet. Point the gun upward a shoot. On the other hand, if you have any idea what load the gun shoots it would be more direct and successful to simple load some lead bullets and shoot it normally. Fire forming is much more complete if done in this manner, and is a simple process with rimmed cartridges.

Is there any info. available on the case head of your existing cartridges, or anywhere else on the gun? European guns typically have cartridge/gauge info on the barrels and/or flats of the receiver, in and around the myriad of proof marks they like to put on guns of that era.

I notice you're from Montana...perhaps you could look up Ross Seyfried , he knows a bit about this kind of thing.
 
Posts: 9647 | Location: Yankeetown, FL | Registered: 31 August 2002Reply With Quote
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