Using a Smith & Wesson model 1988 (25-2) with a five inch barrel, about twenty five were loaded in new Remington Auto Rim brass, over a higher than currently recommended charge of Herco. These were fairly hard at a Brinell of 14 one day after casting, with the small hollowpoint pin, sized to .452 ,and lubricated with LBT Blue; they are 253 grains from my alloy.
Chronograph results- quite consistent.
High - 1027
Low - 1004
ES - 23
Ave - 1016
SD - 8
These hollowpoints are not opening at this velocity when fired through six inches of white pine, but they do appear to be obturating on inspection, with some compression of the lubrication groove.
Earlier attempts to use faster WST were disastrous, with keyholes at 15 yards.
There is some easy to remove leading; the bullet might do better if it was softer. On the other hand, the lands and grooves are extremely shallow, so perhaps it needs to be harder. Accuracy is only fair so far, probably because of diminishing daylight and the absence of a rest, and ran between three and four inches at twenty five yards for ten shots.
Overall length will be fine in the 45 colt Winchester Trapper, and the Ruger Blackhawk, where velocity with slower powders should expand the HP.
I was a little surprised that the results thread was archived so quickly; thinking that these results might be of additional help to the recent recipients of this mold, and with gratitude for lead her fly's efforts getting this thing done and with his subsequent request for more info, I thought I would go ahead with this post, if no one objects. Will be posting more on the same bullet in the 45 colt later. Of course, thanks also to Miha for another great mold.