polychoke ?

[tump]

i have an old 870 barrel with a polychoke (twistchoke) on it. how are these put on? pressed, threaded or welded? it does not look welded. tia tump

[okie shooter]

I had thought they were silver soldered like you would a rib.

[rpmfly2]

I had thought they were silver soldered like you would a rib.


Most are on with Silver!

[tump]

so how do i get it off? hand torch hot enough? get it good and red and twist? i don't want to ruin it. i want to cut the barrel to 19" and reattach it. tia tump

[okie shooter]

so how do i get it off? hand torch hot enough? get it good and red and twist? i don't want to ruin it. i want to cut the barrel to 19" and reattach it. tia tump

My first thought would to cut the barrel to length, then figgure out how to heat the barrel stub(rather than the full barrel, less heat sink then) and choke to get it off. It might be easy once you remove the choke to just heat from the inside untill the solder gives way. You will need plenty of heat though since some silver solders go up above 1000 degrees melting points.

[cimmaronkid]

Use a hot torch as a small propane won't be hot enough. A small Oxy-acetalene works great because the heat can be concentrated in a smaller area and it heats quicker. There were a few that were threaded and silver soldered as well so don't be suprised if there are threads there.

[okie shooter]

On torches, MAPP gas might get you there but it might not too. If you have a propane torch all you have to do is get a mapp cylinder to try.

[tump]

a guy who comes in the bar were i work had a big ole tank in the back of his truck. so i talk him into helping me out. hes lookin it over and i'll see him sat. or tues. he can probably put it back on the chopped barrel also. i guess the drinks are gonna be on me. maybe lunch also.:icon_wink:

[okie shooter]

Trump, make sure you take it apart before trying to de-solder it. No sence in heating the parts not soldered to the barrel. Not sure if you knew that you keep twisting and it does come apart I believe.

[tump]

o.k. okie i did that cut the choke off with about 3" to mess with then cut the barrel to 20". you had mentioned earlier in the thread and i did it then (made good sense). so we'll see:grin2:

[cetme]

make sure to show us a pic of the finished product

[tump]

i had it cut and fitted ,lined up and ready to go. took it to my bro inlaws so him and his uncle(90yrs old) could tack weld it and he burned a hole in it (i'm pissed but not overly) so it will probably be a while till i can spend $100-$120 on a barrel.(got to get a new pump for the pool 1st) now i have a 30" full barrel on it for sh&^s and giggles.:icon_lol:

[tump]

well i cut the 30" full down and gave everything a bath in alumahyde and now i have a pretty good lookin shotty.