buck460XVR
Member
It's fine buck, as once said, "a man's got to know his limitations".
...and a handloader needs to know the limitations of his components. What just works and what works well are two completely different things.
Go ahead be afraid, there are many like you. Never do this, never do that, we get it. If i had 8# of 4198, or sim, i could make it work in the 500.
As I said before, it ain't about being afraid. It's about being practical and reasonable. You are so busy blowing your own horn that you continue to miss this. I too could make IMR/H4198 work in the.500. Since I have reloaded for it and a .460 for a dozen years, I even know where I would start. Since it's one of the fastest rifle powders available to us, it should be the one that would give the best performance. Still, odds are, the outcome would still be below the performance of appropriate handgun powders. THE reason I suggest against it.
Did the OP say he has 4198 on hand? Nope. Did he tell us what powder he did have? nope. Just "I've got lots of rifle powder, and would like to use some in my S&W 500. How does one go about this if there is no load data for this?" While you continue to hammer home that he can do it, and that you could do it easily, you have given him no other direction other than, "a man must know his limitations." and to let us all know how fearless and brave you are. At least those of us telling him to get something appropriate were trying to help and not just inflate our ego.
There is no real powder shortage. Last time I went to my LGS there was plenty of H110/W296 and IMR4227 on the shelves, at a price point lower than IMR4198. Gives better performance at a lower price, kinda a no-brainer. The .500 has been around a long time and is not a wildcat. Folks have been experimenting with it for a long time. I remember when there was little info for the .460 and .500 and folks indeed thought rifle powder would be more appropriate because of the pressures they operate at. Now that both calibers have been around and the experimentation done, one finds Magnum handgun powders the ones in the recipes. Not only in powder/bullet manufacturers manuals but other reloading sources such as GunLoads and The Reloaders Nest. Wonder why that is? Satisfactory performance vs poor performance. not just because it ain't been tried. You have never loaded for the .500 yet feel you have the expertise to give advice. You claim you reload other magnum handgun calibers. Do you routinely use rifle powders for them, as opposed to those powders already recognized to perform well?
The only reasonable answer to the OPs original question is to get powder more appropriate for .500 Mag and try and make the best ammo he can, as opposed to telling him to use what he has on hand and hope.