The Parker Hale Volunteer is another long range .45 Caliber sniper rifle, as are certain Rigby rifles, Gibbs, Tryon, Mortimer and others now manufactured by Pedersoli, all of which use conventional rifling,I asked a casual friend why he used 777 in his muzzle loader. He said it was cleaner than Pyrodex. I said, no, I mean why dont you use real black powder. it is easy to clean and less corrosive. He said in so many words: Nobody shoots black powder. He refused to even try it? It is too bad. There are special storage requirement for sellers and I think with the reduced demand fewer dealers want the hassle.
This Whitworth thread has been educational. Hex bullets! I had no idea. I wonder if the OP knew that? It seems a bit much to me. Now I am curious, are there some good alternatives for shooting heavy bullets a long ways? In this gun or using another gun?
Inconel 600 isn't usually available in the form of a welding wire. Inconel 625 is readily available but the 600 series of Inconel are all very soft and ductile. In other words, it will be deformed by the impact of the hammer on the percussion cap.For anyone else working with bullets and heavier charges, I found this on another forum. “Inside track tip on nipple insert for any Whitworth.
Get some Inconel 600 weld rod and weld one of your stainless steel nipples shut on the receiving end.
Surface flat on a lathe and drill the hole needed,never look back.
Inconel weld rod can be had at any reputable weld house and is applied with a TIG welder.”
I haven’t tried this but a good friend is a very talented welder and I’m going to give him a couple nipples to weld up and then I’ll drill them with cobalt bits.
Thanks for the information Zonie, my impression was that the welder would close to orifice on the thread end of the nipple leaving the cone as it was for the purpose of gaining the heat resistance of the inconel material at the orifice only. I have not spoken with my buddy about the project so availability of the material hasn’t even appeared on the radar. He may tell me to buy platinum lined nipples...Inconel 600 isn't usually available in the form of a welding wire. Inconel 625 is readily available but the 600 series of Inconel are all very soft and ductile. In other words, it will be deformed by the impact of the hammer on the percussion cap.
Inconel 718 has a higher hardness but to get this condition requires extensive heat treatment at very high temperatures as shown in this description:
Hastelloy X is another commonly available welding material but like the 600 series Inconels, it is rather soft and ductile.
- Solution anneal at 1900-1950°F followed by rapid cooling, usually in water, plus precipitation hardening at 1400°F for 10 hours, furnace cool to 1200°F, hold at 1200°F for a total aging time of 20 hours, followed by air cooling.
All of these high temperature materials are expensive but if your going to experiment with them, I sure would like to know how things worked out for you.