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Quinn

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Posts: 16
Reply with quote  #1 
I'm building an 870 Express 20ga, sort of a dual purpose thing for HD & some bird hunting.
For bird hunting, I don't think an 18.5 cyl bore barrel will really be much of a handicap out to 25 or 30 yards or so, given today's ammo.
I'm not new to 870's, been using them for nearly 30 years, a beautiful old Wingmaster and an old Express, both 12 ga. In those years, I don't remember a single mechanical failure of any kind (user error, yes, but that wasn't the gun's fault.)
Am going with a 20 for this build, as the indignities of 65 years of living have taken a bodily toll, and 12ga buck and slugs aren't any fun anymore. Maybe some of you old guys can relate.
My question is, given the reliability of these guns, is it still advisable to make some mechanical upgrades for an HD gun, like replacing springs with ones more heavy, and is the newer MIM extractor really that bad? (my older guns have steel extractors) If so, will the Police 12ga springs & extractor fit the 20ga Express? (I think they will)
Thanks
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saddler

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Posts: 75
Reply with quote  #2 
It'd be worth checking if your 20-ga is built on a dedicated 20-ga frame/receiver, or on the 12-ga frame/receiver.
The way to check is by the serial no. lettering. More parts will then fit your 20-ga if it is based in the 12-ga sized frame. (things like mag tubes, followers, etc.)

I think the trigger groups are universal. I'm sure it was stated that they are in the 870 bible (Remington Shotguns, by Jerry Kuhnhausen)

Check out the shop website that JD runs - his build info on a 20-ga 870 will maybe give you a few ideas.

Was reading up too on 20-ga slugs. Seems the best minds are looking at using a round ball of around .585" for handloads.
Just passed my near mint 20-ga Express to another new member of the forum, as I lucked into a too-good-to-pass-up deal on a 20-ga Wingmaster.
Looking to do some load development with it this year, mainly RB type slug ammo, for target shotgun events.
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Quinn

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Posts: 16
Reply with quote  #3 
Mine's a new Express, on the smaller 20ga receiver (nice, lively little gun, BTW) That's why I'm unsure about parts interchangeability.
That 20ga Wingmaster sounds very nice.
I've seen some talk on a couple other forums regarding 20ga round ball loads. graybeard outdoors and castboolits, if I disremember correctly.
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Buffering

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Posts: 17
Reply with quote  #4 
I have a JD built 870/20 and it's every bit as wholesome as a 12 gauge.

The safety is the same for the 12 and 20.  The extractor too.  The one he built is like a Mini Me version of the 12 gauge and looks just like it. I found a Wilson Combat two shot extension and its's on there.  Good gun and you won't be disappointed. 
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Quinn

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Posts: 16
Reply with quote  #5 
Thanks for the info.  She's almost finished, pretty much stock, except for; aluminum follower, non-MIM extractor, heavy duty carrier dog spring, & an 18.5" barrel, all from J.D. He's a good man to do business with.
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lee1959

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Posts: 145
Reply with quote  #6 
I found that with my old arthritic shoulders the Blackhawk recoil reducing stock really did wonders for comfort shooting. Not the pistol grip style, I preferred the old style stock design. 

[90f39b7e-fbf6-49e7-83ca-ce94c40afb0b_zpsd3ec9f99] 
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combatshotgun

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Posts: 1,773
Reply with quote  #7 
I have used that stock on a slug gun.   The only issue I had was after a couple of years of using it I grew a beard and yep, it can pull some chin hairs if you are not carful.   I really takes the bite out of those 3" Sabots I was using.  
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