Removing a Tikka T3 barrel at home

[Dave in WI]

Once you machine this groove (in blue) the thin metal remaining can’t support the preload on the shoulder and the torque on the threads is vastly reduced.

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[dgeesaman]

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Yeah that's pretty much what the take-off looked like when my smith was done with it.

 

[divingin]

Try a 50/50 mix of ATF and Acetone instead of store bought penetrating oil. Apply a couple of times a day for a week. I tear a strip off a shop rag and wrap it around the barrel where is meets the action. Soak the strip of rag, that holds the oil where you want it.

Some manufacturers use a sealant or thread locker type material when assembling. Any kind of penetrating oil needs to be able to dissolve (or at least soften) that stuff in order to be effective. The problem is that you most likely don't know what they used, so don't know which solvent will work (as an example, Rocksett is water based, so will largely be unaffected by oil type solvents.)

My 700 had a sort of slightly-darker-than-tan material. Not sure what it was, but some of peeled off (similar to a rubber sealant) and the rest flaked off with a heavy bristle brush (like a chalky type material.) I never tried using any type of solvent on it, so don't know what would have been effective at loosening it.

 

[joshb]

Some manufacturers use a sealant or thread locker type material when assembling. Any kind of penetrating oil needs to be able to dissolve (or at least soften) that stuff in order to be effective. The problem is that you most likely don't know what they used, so don't know which solvent will work (as an example, Rocksett is water based, so will largely be unaffected by oil type solvents.)

My 700 had a sort of slightly-darker-than-tan material. Not sure what it was, but some of peeled off (similar to a rubber sealant) and the rest flaked off with a heavy bristle brush (like a chalky type material.) I never tried using any type of solvent on it, so don't know what would have been effective at loosening it.

Yup. A little heat softens it up. It’s my last resort but it works!

 

[pcmacd]

https://www.amazon.com/Dead-Blow-Hammers/b?node=553198

Much cheaper @Harbor Fright, probably made in the same factory.

 

[bassnbrass]

Short Action Customs has a bushing set that works with their vise specifically for tikka factory barrels and I've found it to work very well. I would echo much of what's been said above as far as using penetrating oil and letting it sit for a few days then tightening up in the vise with drywall tape or cardboard tube and getting a good smack with a deadblow hammer.
Worth noting the older T3 model are usually much tougher to get apart than the newer T3x guns so if you are still shopping for the action worth looking for the x version for several reasons.