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Iv'e been looking for info on the net and even though I know that "everything you read on the net is true" I would like to verify some info by getting input from experienced hand loaders.
How close to the same are Unique, Hodgdon Universal, and Accurate #5?
First step on "your" quest is to download a chart on the burn rate of powders ( fast to slow ) ..google it
Each manufacturer will have a web page offering recomended loads for their powders so all "you" need to do is check the chart to see where the powders fall in the burn rates for rough grooping. You will then have a rough idea as to what powders may be similar and compare them from there.
As each powder will perform differently depending on volume, brass size, primer, etc .. there is not enough information in your request for anyone to provide a shortcut, but gathering your own info and compiling a load book, or buying a loading book that you can use as your base would be the only way to proceed in the long run.
These days if I can find a powder, and it looks to have useful data, I will buy it.
Just stick to fast/medium burning ones for lighter target loads and medium/slow ones for magnum loads Your unique is in the fast/medium range. I've never used the other two.
As above - google for a burn rate chart, but in no way should you extrapolate load data from it. It's just to give you an idea of how suitable an untried powder might be based on where it sits compared with ones that you know.
If you are looking for a direct replacement --Do not use the burn rate chart--
different powder manufactures formulas are different
One powder on your burn chart could be a ball powder and right next to it could be a flake powder
the only way to use the burn chart is look at it as a similar powder and then go to that manufactures site and find and use that data to do your reloading
For instance H4895 is different than IMR 4895 ------ if you have H you use H data and ---- If you have IMR you use IMR data
Those powders combinations are similar. If you have been using Unique and can't get any more, then Universal would be a good substitute. It works well in similar applications. The load data is similar too, but not the same. Work up as you would with any new powder.
I have load date for Bullseye and Unique for the .44 Russian. The problem is that I can't find any of either. I have learned (the hard way) that burn rates are not necessarily related pressure and pressure is my main concern.
I have load date for Bullseye and Unique for the .44 Russian. The problem is that I can't find any of either. I have learned (the hard way) that burn rates are not necessarily related pressure and pressure is my main concern.
