Revolver looks OK!
Though very expensive.
Similar to old Trade Italian Break Barrel Revolvers in .22, .32 and .38 that flooded the US market in the 70's. Guns were Ok to shoot and sold for peanuts, before imports of these cheap revolvers were banned. Sold for $40-50 in 1980 versus $ 80 for H&R and $ 200 for S&W Mod 31.
AS somebody claimed shooting 4 inch groups at 25 metres.
I can say flat out not possible.
Best Bench rest Groups I see on range with excellent Pistols like Kimber and SIG in 9mm or 40 S&W are 2-2.5 inch. Experienced shooters too, practicing regularly, with target ammo.
4 inch with this Revolver not possible, no matter how good the shooter or whether fired single action. Expect 8 inches or so, even the old Webley seldom grouped 6 inches with Eley ammo. Just not possible with these break barrels.
RE: Somebody asking about microgrooves. Microgroving is a system of having many small shallow grooves instead of the usual few regular size grooves. It is extensively used by Marlin in their .22 rifles. Seems to work. Even the cheapest Marlin shoots good groups.