Big $ Irwin Pedersen Reciever on GB

[Bob K]

Exactly, if your going to build a mixmaster, why spend the money on an IP receiver. You would need a 2 or 3 of 43 barrel with P proof 6 1/2 inches down for a restoration. Try to find one of those !

Are you sure about the 6 1/2 inches? I have two IP's with what I believe are the original barrels. One with a serial number in the 3.2 mil range has an Underwood 11-42 barrel with two proofs; one 4 5/8 down and one 6 5/8 down. The second IP in the 1.7 mil range has an Underwood 3-43 barrel with one prooof which is 6 5/8 down.

[tenOC]

My IPs have the P stamped 6 5/8" back from the tip. One has two Ps.

[Rustship]

I'll buy that, just re measured, actually looks like between 6 1/2 to 6 5/8. My eyes aren't that good. Mine is a 1.77 with a 2-43 underwood barrel.

[USGI]

That's "close enough for government work"! - Bob