#73/ #92 Win/Miroku 44/40 specs ?

[J.B.]

Well its been a while since my Single/Action days and I miss my customised # B92 Browning...so I finally put a deposit on a 92 carbine in 44 WCF. I've had the 44 magnums before and loved them but wanted to run with a traditional for action cartridge and have had experience with the 44/40 in the past. It will be the 20" carbine ( not the short rifle ) and I believe is running 1/36" twist for the stubby 44 bullets. I 'imagine' the modern Miroku 44's, be they 73's or 92's are running .429 bores...but I'm not sure. Anyone here have any first hand experience ? Plenty of 'keyboard guestimates' to be found but as I'm looking to organise a mould from Accurate, I'd like to get it right. I see the lawyers / regulations got to the manufacturers..so I've a rebounding hammer and I gather numerous other changes to the firing pin/ safety mechanism..but they still look mighty tidy.
rgds.. J.B.