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question re pre 1925 model 12 short chamber

Discussion in 'Shooting Related Threads' started by buddy123, Feb 22, 2009.

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  1. buddy123

    buddy123 Guest

    The gun in question is an early model 12 in 20 gauge.
    It has a 25 inch barrel and 2 1/2 inch chamber.
    Has anyone here ever converted one like this to 2 3/4 inch?
    If so, what was the general process and approximate cost?
    Any advice will be appreciated.
    Pete
     
  2. kehrby

    kehrby Active Member

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    It can be done but I think its somewhat expensive to do it right. I've got a 16ga made in 1913 that has the short chamber. No more than I shoot it I just buy 2 1/2" shells. That way the gun stays original and I still get to use it. Its actually my favorite pheasant gun!

    Steve
     
  3. g7777777

    g7777777 TS Supporters TS Supporters

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    its cheap- you could do it yourself if you had a chamber reamer

    Gene
     
  4. Shooting Coach

    Shooting Coach Well-Known Member

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    I have to agree with Sarg on this. Leave the Grand Old Gun as is, buy the right bullets for an occasional treat, and enjoy!
     
  5. Bruce Specht

    Bruce Specht Well-Known Member

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    Don't mess with it! You have a wonderful old gun and ammo is readily avaliable shoot it and enjoy it.
     
  6. oldgahchamp

    oldgahchamp Active Member

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    Buddy, Call Stu Wright in Pinckneyville, Ill. (618) 357-8933 He is an expert on mod 12s. He opened a chamber on a 12ga. to 2-3/4" for me and it wasn't that expensive. Larry Evans
     
  7. buddy123

    buddy123 Guest

    Thank you for all the help on the chamber question.What about any insertion/ejection issues in the receiver ports to accomodate the slightly longer 2 3/4 inch shells?
    Thanks, Pete
     
  8. boomer

    boomer TS Supporters TS Supporters

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    Pete--The ejection port will also have to be enlarged for reliable ejection. You got good advise above. Don't ruin the gun with this work. 2 1/2" ammo is readily available--or sell it and buy a 2 3/4" gun. There's no shortage of M12's in the marketplace.
     
  9. Holeinmypattern

    Holeinmypattern TS Member

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    I have one made in 1913. The chamber has been lengthened but the ejection port is original.
    it will shoot 2 3/4 shells but it can be difficult to get them to eject.
    I would leave it alone if I where you. An origanal gun that old shouldnt be messed with! Thats my 2 cents worth.

    John
     
  10. PerazziBigBore

    PerazziBigBore TS Member

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    Any shotgun press you load on.. that also loads 2.5" 410 shells.. can EASILY load 2.5" or 2 5/8" ammo.. Normally.. you'll just need to trim the crimping die body..and there is enough adjustment to take care of the rest.. A pacific/Hornady 150/155/266 can EASILY be converted.. I've done many for friends.. A simple case trimmer can recycle the hulls you already have.. Ballistic products can furnish the wads and loading data..
     
  11. onlym12's

    onlym12's TS Member

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    I have a 16ga that was opened up, it work's flawlessly. I bought the gun that way, but I would never have it done myself. Just my opinion.

    Thank's Mike
     
  12. g7777777

    g7777777 TS Supporters TS Supporters

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    The ejection port usually doesnt need any work

    You can check but unless you have some very rare variant- there isnt going to be any collectors value - so why not extend it that fraction of an inch ?

    You are then safer- regardless of who shoots it in the future or what ammunition is used

    Regards from Iowa

    Gene
     
  13. J.Woolsey

    J.Woolsey Member

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    Gn7777777, to function correctly the ejection port absolutely needs to be enlarged accordingly. Check with Simmons, Williams or Wright's. I am in favor of leaving it as it came from the factory. Why spend $250 to destroy the collector value of a great old gun. J.W.
     
  14. g7777777

    g7777777 TS Supporters TS Supporters

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    J Woolsley-$250? You been taken to the cleaners buddy

    I have done this several times-- most people charge 50 bucks and no you dont need the ejection port enlarged most times- in fact I have never had it enlarged- not that that would be a big deal

    You could just buy a chambering reamer yourself for whatever they cost and do it yourself- we are talking a fraction of an inch here

    J W --what collectors value are you talking about?

    regards from Iowa

    Gene
     
  15. J.Woolsey

    J.Woolsey Member

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    No Gene ole Buddy, I talked to someone who knows what the heck he is doing, and has been doing for many years. Matter of fact last I heard people at Simmons make a living Gunsmithing, Perhaps you also do, if so may I suggest you measure a pre 1926 16ga or a 20ga ejection port then a 2 3/4"port and come back with the results. Simmons,Williams,etc reams the Chamber, lengthens the forcing cone (did you do this also?) lengthen the ejection port, and reblue for $250. Price sounds fair to me. As for the collector thing when you have a 1921 mod 12 in pristine condition, don't you think it would have more value as an original piece? Yes Gene some people collect Mod 12's J.Woolsey
     
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