I am going to ask this question and I am going to stay out of it. First let me say, no one knows the exact answer, AGAIN NO ONE period.
Also the usual. Flash gap will make a difference, primers and different lots of the same primers, bullet alloy, bullet diameter, bore and cylinder dimensions, cases, crimp amount and type, lots of the same powder, how tight one holds the grip and how hard one presses the trigger and whether you are ahooting into or downwind and a host of the many things that can influence velocity etc. etc. so on and so forth.
Keith stated that his load chronographed around 1400 FPS for HP whites laboratory when they tested it for him. This was from a 6.5 inch solid breech test barrel that the industry used at that time.
The question. What do the people on here think that load would have done from his 4 inch carry M29?
I am just asking what you think. No one knows for sure. Please understand that as I do also.
Now lets see some guesstimates, wags and swags.
Again I am not trolling, baiting or calling out anyone by my post. I mean no harm, hurt or anguish to anyone on here. This post is made based on my knowledge, experience and/or beliefs. Nothing more. Please take it that way. Thank you