Marlin 20A pump 22 rebuild

slimjim · Posted: Fri Oct 14, 2011 9:12 am Post subject: Re: Marlin 20A pump 22 rebuild

Here is a pic of the action in case it is useful.

dan1dad · Posted: Fri Oct 14, 2011 4:51 pm Post subject: Re: Marlin 20A pump 22 rebuild

the hole at the receiver looks the same, I'm sure the size might be different, but you can see from the previous drawing what the original marlin 20 size is.

I take it you are cutting the barrel there? Or will you let the dove tail section sit out in front of the barrel? lol That would be different, thats for sure.

dan1dad · Posted: Fri Oct 14, 2011 4:52 pm Post subject: Re: Marlin 20A pump 22 rebuild

the inside of the lever action does look a lot simpler than the pump.

slimjim · Posted: Fri Oct 14, 2011 6:56 pm Post subject: Re: Marlin 20A pump 22 rebuild

dan1dad wrote:

I take it you are cutting the barrel there?

I decided the 39a with a 24" barrel was too front heavy. I also wanted to use a scout scope so decided I was going to shorten the barrel to achieve a better balance. I also wanted to learn about optimum barrel length for 22LR. I hacked sawed off 2" at a time and measured velocity. Many people had claimed 16" to 18" was optimum for velocity. As you see from the topic below. That was not the case.

huntingnut.com/index.p...mp;start=0

slimjim · Posted: Fri Oct 14, 2011 6:57 pm Post subject: Re: Marlin 20A pump 22 rebuild

Oh, I need to get the 39a into a gunsmith after the hunting season rush and get the barrel trimmed, crowned and the dovetail added back in.

slimjim · Posted: Sun Oct 16, 2011 1:03 pm Post subject: Re: Marlin 20A pump 22 rebuild

dan1dad wrote:

I take it you are cutting the barrel there? Or will you let the dove tail section sit out in front of the barrel? lol

The cut is at a 20" barrel length. I left the dovetail their as a reference so the new dovetail for the shorter barrel could be accurately located making it easier to modify my mag tube when I shortened it.

I hope to complete this project this winter.

dan1dad · Posted: Sun Oct 16, 2011 5:04 pm Post subject: Re: Marlin 20A pump 22 rebuild

ok, that makes sense. You have a round barrel. Mine is octagon and the bottom is a lot easier to find. Yeah, I hope to get mine done this winter too. Id like to get it done tomorrow, but I doubt that would happen. lol

I did get a new restore project today. My Uncle just gave me his 1972 Honda CB175 Super Sport Motorcycle. Its been sitting for many years, but still in pretty good shape. I started riding bikes at the age of 9, and stopped for some stupid reason in my 30s, but Ive been thinking about getting another one, and this looks like a fun way to get back into it. Just another thing to spend money on Laughing

dan1dad · Posted: Thu Oct 20, 2011 10:51 pm Post subject: Re: Marlin 20A pump 22 rebuild

hey slimjim, dont know if this is any good for what your doing, but you might find it interesting.

marauder.homestead.com...arrier.htm

dan1dad · Posted: Thu Oct 20, 2011 11:18 pm Post subject: Re: Marlin 20A pump 22 rebuild

oldguns.net/sn_php/marlinlookup.php

heres another you might like. It can date your gun from the serial number.

Says mine was made in 1886

oh, also, my dad had the right stock for it. Just need to make the forearm/pump part.

dan1dad · Posted: Thu Oct 20, 2011 11:37 pm Post subject: Re: Marlin 20A pump 22 rebuild

SlimJim, by the way, I am at my dads and he just told me that if your interested, he has some parts for a marlin model 94 you have a use for them.

slimjim · Posted: Fri Oct 21, 2011 9:42 pm Post subject: Re: Marlin 20A pump 22 rebuild

dan1dad, both interesting Internet sites. Thanks! Glad you found the stock. You might list the Marlin 94 parts on the forum.

when you get the stock fitted, post some pictures so we can see your progress.