"O" and "OO"..That is the question..

[Jerry VanHorn]

I just bought a VH stock that was sold as an "O" frame...Round knob..DHBP..All original..and very nice... When I got it, I checked the SN against the book..233299..and it turns out it is listed for a 410.It's an OO size..and fits 28 gauge. According to TPS, an OO frame is 1 29/32 across bolsters...and an O frame is 2 1/32...or about 1/16 on a side difference. Brian D. says this is the critical measurement. Would a 1/16 difference be that critical ?..If the answer is positive yes...Then I have an OO..round knob stock for sale..or trade...Any thoughts ?..thanks ..jv..