This is a pre 64 333xxx, early pre 64s have a larger pin; mine is the later pre-64, the hole that receives the spring is about 3/32. I don't have a way to measure it exactly, but a 3/32 drill bit will fit.

I just had the action barreled and lost the spring and pin.

Hurry! I'm leaving for Africa in two weeks.

Thanks.

Pre64win.com has all those parts in stock

When dealing with small parts under spring tension I disassemble and reassemble in a gallon zip lock or similar storage bag. I hate losing little things.

Jim Wisner posted on your other thread that he has just made some. Looks like he has both the plunger and spring. Give Jim a call and I bet he can get you sorted.

http://www.wisnersinc.com/