If you can find Trailboss, that's a good powder to use. I use it in my MK1 with MKII cases. I don't remember the load offhand but it's a very light load. Much lighter than shooting factory MKII ammo.
Certainly. I'm loading 3.1 grains of Trailboss under a 258.6 grain cast bullet (I just weighed one).If you're able to share that load data, I'd appreciate it very much!
Most kind of you! Do you figure there would be any harm in trying that powder charge with a 200gr bullet? I quite like the concept of getting this mold: https://www.mp-molds.com/product/455-webley-man-stopper-hollow-base-4-cavity-mold/Certainly. I'm loading 3.1 grains of Trailboss under a 258.6 grain cast bullet (I just weighed one).
Cases are re-used Mark II Fiocchi.
Bullets are cast and I believe I got them from Jethunter on CGN.
I don't have a COL handy but with any lock a photo shows up below.
These are very soft shooting rounds. Apparently I didn't write down what they chronyed at, but I do remember that I would not want to be pushing them any slower.
I don't profess to be an expert on .455 or Trailboss. But I did get that load recommendation from someone on CCN at some point. The only thing I can vouch for is that the load I posted seems to shoot perfectly well in my Mark I.Most kind of you! Do you figure there would be any harm in trying that powder charge with a 200gr bullet? I quite like the concept of getting this mold: https://www.mp-molds.com/product/455-webley-man-stopper-hollow-base-4-cavity-mold/