Thread: Double rifle barrel profiles?

Calling all forum double rifle owners

I have finished my mono block for a 45-70 double rifle
And ready to get on to the barrels
But I don't have any hard data to base the barrel profiles on !

I'm planning on about 24" / 600mm long barrels
It's 1"/ 25mm diameter at the end of the mono block

Does anyone have a double rifle that they could measure the barrel diameters at multiple points along their lengths to give me an idea where I'm going?

Or know of a web site with anything like this ?

Cheers