Von Lenk constructed 12-pounder guns which were shot with guncotton cartridges, but they were much damaged by the firing.
About 1860 he tried bronze guns, which were less likely to burst than iron ones, and with propelling charges of guncotton fired
from them shells which were filled with bursting charges of guncotton. The shells often burst within the barrel, for the acceleration
produced by the propelling charge of guncotton was much too sudden and shocking. They could be shot out without exploding
when a propelling charge of black gunpowder was used. On July 20, 1863, the magazine at Hirtenberg exploded, and the
Austrian government thereupon decided to abandon the use of guncotton as a propellent explosive.
newsteadvic wrote:Obviously ignore bizarre suggestions about making your own guncotton! From the excellent Chemistry of Powder and Explosives by TL Davis:Von Lenk constructed 12-pounder guns which were shot with guncotton cartridges, but they were much damaged by the firing.
About 1860 he tried bronze guns, which were less likely to burst than iron ones, and with propelling charges of guncotton fired
from them shells which were filled with bursting charges of guncotton. The shells often burst within the barrel, for the acceleration
produced by the propelling charge of guncotton was much too sudden and shocking. They could be shot out without exploding
when a propelling charge of black gunpowder was used. On July 20, 1863, the magazine at Hirtenberg exploded, and the
Austrian government thereupon decided to abandon the use of guncotton as a propellent explosive.
What are you shooting Warrigul? There are probably two alternatives - using smokeless, either in the Nitro-For-Black (NFB) ratio of 40% of the BP grain weight in AR2207 (H4198). This formula gets used by a lot of the BP double rifle shooters, google NFB 4198 or Graeme Wright and his book about it Shooting the British Double Rifle. Depending on calibre some people use the faster shotgun powders like unique in BP cased rifles however the faster powders make me anxious. This is not appropriate for a muzzleloader.
The other option would be BlackMZ. If you have a Nioa/Alliant Powder dealer they can order this is as it is treated like a smokeless powder rather than BP. Is comes as a coarse black grain, about FFg size. It is safe in muzzleloaders and BP cartridge arms. It is citric acid based with chlorates and perchlorates. It is more corrosive than BP if left after shooting but cleans up well with hot water like BP. Apparently it likes a good deal of compression to get consistent velocities however I have not done a direct BlackMZ to BP comparison. It produces less smoke but leaves a white film in bore and case. Some more info here:
http://castboolits.gunloads.com/showthr ... t-Black-MZ
MeccaOz wrote:Do some investigating on gun cotton mate, doesnt appear all that hard to make, and was what came after black powder.. Alot of people think it's nitro glycerine but it's not
Gregg wrote:Did you end up giving the Pyrodex a go, Warrigul?
Warrigul wrote:Black MZ is on the way, well apparently it will be on the way shortly as the mines department have had a hard time accepting that a "Black powder substitute" isn't actually black powder. This is despite the multplie pages of supporting evidence to say it is a propellant not an explosive.
Gotta love governments.
Warrigul wrote:Gotta love governments.
Ron Hawkins wrote:Hi Warrigul, have you had any success getting substitute black powder. Im in George Town and am desperately trying to find a source of powder in both FFg and FFFg to feed muzzle loading rifles and pistols.
bigpete wrote:Where are you from ?
Oldbloke wrote:This is an old thread. Seems to has been an assue for 5 years.
on_one_wheel wrote:Oldbloke wrote:This is an old thread. Seems to has been an assue for 5 years.
There might be money to be made running powder from Australia to Tasmania.
It's probably much easier and safer than running powder from Columbia to Australia.
mickb wrote:So dealers can have ammo, smokeless and primers shipped, but not blackpowder?? Sounds very weird, must be a law targeting Blackpowder? Or are these guys just saying there are currently no stocks left in the state, and gunstores waiting for the next order?
duncan61 wrote:Combining Potassium Nitrate (75%) with Charcoal (15%) and Sulfur (10%) gives us a nice, slow-burning black powder! I copied this quote of a youtube video that shows how to put it all together.Is making your own a possibility.Most of us reload for many reasons but doing it yourself is part of the experience and the satisfaction when it all comes together