JPH,
I didn't bring up the .257 Weatherby, Mac did and I was trying to use data that fit his scenario. Which kinda makes me wonder what you know about scientific methods, if you can't even keep your information straight.
As far as comparing the max load in a .25-06 with his Weatherby, all I said was, Hornady was giving him the equivalent of a max load in another caliber, which is certainly safe, since it would be a greatly reduced load in his gun. If he keeps on listening to them, he will end up with a high dollar .25-20!
You certainly wouldn't want to use .300 Win Mag loads in a H&H, since the H&H holds less powder, but it would work the other way around, according to Speer #13, i.e. with a 180 gr bullet, the H&H holds a max load of 70.0 gr IMR 4831, but the .300 Win holds a max load of 73.0 gr of IMR 4831. That's pretty much a no brainer. Of course, one would have to figure out why they should burn 3.0 gr more powder in the .300 Win to get less velocity than the H&H.
BTW, you are the one that brought up another chambering, even though you complained about referring to different calibers, I didn't do it!
ScatterGunner,
stoi·chi·om·e·try
1. Calculation of the quantities of reactants and products in a chemical reaction.
2. The quantitative relationship between reactants and products in a chemical reaction.
Nitroglycerine is normally a liquid (l), it under goes a specific reaction when it explodes and produces specific gases (g) in specific (stoichiometric) quantities.
4(C3H5N3O9) (l) -> 6N2 (g) + 12CO2 (g) + 10H2O (g )+ O2 (g) (Chemistry, The Central Science, 1997, page 841)
The percentage of nitroglycerine a powder has is going to influence the amount of gas the powder can produce and that gas production can be calculated precisely.
The reaction of cellulose with nitric and sulfuric acids may give the mono-, di-, or trinitrate, the degree of nitration being determined by the percentage of nitrogen in a sample of the product.
Nitrated cellulose containing more than 13% nitrogen is explosive and is extensively used in smokeless powder under the name "guncotton". The "double-based" powders are mixtures of guncotton and nitroglycerine. (Organic Chemistry, 1964, page 472)
I suppose I shouldn't have used the term "oxidation" since the compounds in question have the O2 needed without externally supplied O2. However, since glyceryl trinitrate only gives 90-95% yields and the rest can be mono or di, the purity of the compound is going to vary depending on the "batch" that was used in the actual production of powder. Even in a continuous process, the final product is rarely the exact duplicate of the last tank shipped out. Even in USP Propylene Glycol that Dr. Pepper uses in their products and you eat in your potato chips. I believe we were allowed from 0 to .04 ppm water and that range alone is going to affect the final product, just like a range in component compounds is going to affect each batch of powder.
If we are talking about nitrocellulose, with cellulose being a natural occuring substance in cotton or wood pulp, it has to be remembered there are numerous site to attach the nitro groups and as already quoted, there can be more than 13% N2 or there can be less than 13% N2. We also have to remember cellulose is dextro rotatory and if there was an attempt to use a synthetic cellulose, the racemic nature of the compound would have to be taken into account. I don't even know if levo (sinister) rotatory cellulose has ever been determined to have the same properties as dextro. It should also be recognized that cotton and sawdust, both sources of cellulose, aren't exactly the same.
I'm actually getting weary of talking about this. If you think the older manuals are dangerous, send them to me and I'll continue to use them.
