Thanks all for the info so far.

I had read that they should never be dry fired due to high risk of damaging the firing pin (supposedly this was rectified with later production.)

I'd also read that the model 10 has an extractor only, not an ejector, so not for dangerous situations requiring a quick second shot. But otherwise the sparse comments have been positive, particularly about fit and finish and accuracy, other than concerns about the high cost.

I took a chance and ordered a used one. Set up similar to an English single shot at the turn of the last century...29" barrel, iron sights on an express rib, in 45-70. Bit of a risk, since the only ones I've handled were in smaller bores (257, 7mm, 30-06), with shorter barrels (22-24"s).

The quarter rib, case hardened receiver and great walnut suckered me in. Hopefully it arrives tomorrow.