Win 100 gas problems - The Firearms Forum

30calpal · 04-11-2012, 06:32 PM

So my Win 100's piston is corroded awful! I'm pretty sure I'm getting gas blow-by cause it fails to eject sometime. The cyl and the piston are steel and I think, hard chromed. I think I would like the piston to be 416 S.S. Would 416 hold up to heat, pressure and pounding? Would it have to be heat treated? Could the cyl also be 416 S.S. ? Or should it be a different material?
If I have a piston made of 416, how close tolerance should the piston head be to the I.D. bore of the cyl? Don't want the cyl to 'bite' the piston after a few shots. Metallurgy and machining experience a plus here. Thanks.

gunplumber · 04-12-2012, 06:54 AM

www.brownells.com has your tube.

30calpal · 04-12-2012, 02:32 PM

Thanks Gunplumber, I know about the replacement parts from Brownells and Nu-Line. My SIL is VP of a machine /fab company and I can get 'custom' parts made. I was hoping for answers more directly answering the metallurgy questions. But, thanks anyway.

04-11-2012, 06:32 PM	#1
30calpal Member Join Date: Jan 2012 Location: central Alabama Posts: 7	Win 100 gas problems So my Win 100's piston is corroded awful! I'm pretty sure I'm getting gas blow-by cause it fails to eject sometime. The cyl and the piston are steel and I think, hard chromed. I think I would like the piston to be 416 S.S. Would 416 hold up to heat, pressure and pounding? Would it have to be heat treated? Could the cyl also be 416 S.S. ? Or should it be a different material? If I have a piston made of 416, how close tolerance should the piston head be to the I.D. bore of the cyl? Don't want the cyl to 'bite' the piston after a few shots. Metallurgy and machining experience a plus here. Thanks. -->

04-12-2012, 06:54 AM	#2
gunplumber V.I.P. Member Join Date: Apr 2010 Location: Oklahoma Posts: 370	Re: Win 100 gas problems www.brownells.com has your tube.

04-12-2012, 02:32 PM	#3
30calpal Member Join Date: Jan 2012 Location: central Alabama Posts: 7	Re: Win 100 gas problems Thanks Gunplumber, I know about the replacement parts from Brownells and Nu-Line. My SIL is VP of a machine /fab company and I can get 'custom' parts made. I was hoping for answers more directly answering the metallurgy questions. But, thanks anyway.