Hamilton Model 27 Rifle mainspring

buttplate

Hello!
It looks like I'll have to make a mainspring for this rifle. Can someone tell me what the wire diameter is?
Thank you!
buttplate

charliemeyer007

I don't think wire diameter is critical, strong enough to work should be fine. Extra strong might beat up the parts. We have much better spring steel than they used.

http://www.tysontriplett.com/products/