Dear Mr Slinn - I too live in the UK, and HAVE tried Pyrodex pellets as an experiment, and since I live outside the USA, I can speak my mind without fear of litigation.
To sum up, I can tell you that as far as I am concerned, loading up with Kn*rr stock cubes, or even O*O cubes would provide much the same effect. Some went phutz, some went ....ka............thud, and a couple even went boom in a slow and deliberate fashion.
Just read the blurb from Hodgson's own site to see what they are meant to be used in...
Quote - Pyrodex Pellets are a compacted propellant 3/4" in length with a hole through the middle. One or two pellets can be loaded behind saboted bullets to give the casual shooter or the hunter reliable and consistent performance. On inspection you will notice a black pad on one end of the pellet. This is an ignition pad and should be loaded into the muzzle first. The Pyrodex Pellet is recommended for use in all in-line muzzleloading rifles. Hodgdon has also tested the pellets in some side hammer guns and found them to work beautifully in most. [end quote].
In-line rifles is what they were made for, NOT revolvers.
I have never seen them on sale here in UK, but then, I have never seen an in-line weapon either. Perhaps one follows the other, and there simply aren't any? I DID take a few minutes out to make a few phone calls, but got met with blankness at the other end when I mentioned them...
best wishes
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