Originally Posted by Drew Hause
Yes Tim - the STD under the crown.
Very unlikely however that the barrels are 4140, but possibly 1040; which has similar tensile strength and hardness (but less corrosion resistance) and I would personally be apprehensive about using steel target loads through a .040" choke in those barrels.
Please let us know the actual bore and muzzle constriction.

Hi Drew,

I never purchased the gun, just saved the dealer's photo as I thought it was interesting. Could you even get 2 1/2 inch steel shot cartridges back in 2012 or even today in North America?

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TC