Tikka Switch Barrel Rifle Progress

bdb.hunting

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Hello All.

I have decided to document my progress as I go along with my new switch barrel rifle. I read about the concept and preferred the idea of multiple barrels and one action.

I started with a Tikka T3x CTR in 6.5 PRC. I spent the last few weeks/months cruising around the web in search of barrels. My Original intention was to get two more barrels 300 RCM and 338 RCM as the case is practically identical to each other and would feed reliably from the magazine while giving me 3 great calibers to choose from.

In the meantime I picked up a few stainless lite barrels on the cheap just to try it.

Currently in my stash I have:

1. 300 WSM Stainless Lite
2. 270 WSM Stainless Lite
3. 300 Win Mag Blued
4. 6.5x55 Swede Varmint Contour Stainless Lite (Waiting on a left hand bolt)
5. 6.5 PRC - Factory CTR semi heavy Barrel

Last night I finally got around to making an attempt at removing the factory barrel by myself. After doing allot of research and sorting out what would be the best method to attempt this.

Tools I used are as follows:

1. Viper Barrel Vise
2. Internal Action Wrench (PR Precision on CGN)
3. 31mm open end wrench
4. Drywallers tape
5. Torque Wrench
6. Rubber Mallet
7. Electrical Tape

Prior to mounting the barrel in the barrel vise I put some drywallers tape in to avoid any damage. I then proceeded to put the barrel in as close to the action as possible and tightened it down. I then used electrical tape on the sides of the action to add a hair of thickness. (I measure it at 30.5mm) so the 31mm was the only one that fit (I tried a 1-3/16 but it would fit on.) The tape also protected the action.

Then I proceeded to install the internal action wrench adding just shy of 100lbs onto the torque wrench and while applying force to it I used the rubber mallet to tape the open end wrench and once I gave it a few good smacks with the hammer it broke free and spun right off.

Then I proceeded to install the 300 WSM stainless lite barrel. (Just to try) once installed snug (I didn't have any grease or lube so I didn't want to torque.) I proceeded to insert the No Go Gauge and as supposed to happen the bolt would not close. I then removed the No GO and put the Go gauge in which them cycled flawlessly.

Currently I am into it for less than two rifles and have 3 calibers to shoot without anymore modifications required.

I do plan to add some photos when I get the chance. In the next week or so I will be taking the rifle to the range to confirm that the 300 WSM Barrel works without issue 100%

Hopefully this helps some people along the way.

Disclaimer I am not a gunsmith and don't claim to be one. This is just a review of how I did my own work I highly recommend talking to a gunsmith prior to doing anything.

Cheers,
B
 
Thanks for that info

Do you know if there is a torque spec for the barrel when you put a different one back on, or is it tightened to headspace.....
 
Thanks for that info

Do you know if there is a torque spec for the barrel when you put a different one back on, or is it tightened to headspace.....

So from my research most barrel makers recommend 70/80 ft lbs for non magnums and 100 ft lbs for magnums. I am going to start at the non magnum and put a witness mark to see if it shifts at all. Once I get some form of grease.

Cheers,
B
 
Is the rifle scopped or do any of the barrels have iron sights. At 100 ftbl after a few barrel switches they may start to over clock, personally id try torquing to maybe 35 ftlb and if head space is good then use that torque spec. Take down rifles with intermittent threads often are less then 5 ftlb tightened

Unless they use a barrel nut, if they do, torque away but even still 35-45 would be plenty
 
Is the rifle scopped or do any of the barrels have iron sights. At 100 ftbl after a few barrel switches they may start to over clock, personally id try torquing to maybe 35 ftlb and if head space is good then use that torque spec. Take down rifles with intermittent threads often are less then 5 ftlb tightened

Unless they use a barrel nut, if they do, torque away but even still 35-45 would be plenty

Rifle is scoped no iron sights.

That is a good point about over clocking. Maybe I will start lower and see how it shakes down. I heard that some F-class shooters just do them hand tight.

Start at 30 ftlb with a little grease.

Cheers,
B
 
Torque 'specs' for barrels are all over the map. My opinion is these 'specs' have more to do with how tight a factory decides it can mush the thing together to force a barrel to index. "tight is good". It doesn't want to rattle loose, but you don't want to stretch threads or bugger up the mating faces... pick a number and be consistent.
 
Torque 'specs' for barrels are all over the map. My opinion is these 'specs' have more to do with how tight a factory decides it can mush the thing together to force a barrel to index. "tight is good". It doesn't want to rattle loose, but you don't want to stretch threads or bugger up the mating faces... pick a number and be consistent.

Thanks for the tip.

Also do you use any type of anti seize or grease ? on the tenon threads ?

B
 
I prefer not to put them together dry (although many I've taken off were). Pick your poison, grease, oil(preferably heavier than wd40), anti seize, blue loctite... it'll all protect against galling. The biggest thing is to make sure there's no dirt or grit in the threads. An old tooth brush with some brake cleaner or wd40 and a shot of compressed air, if its handy, is cheap insurance against a picked up thread.

In the end, its just a thread. Keep it clean, don't cross thread the sucker and it will go till it hits its shoulder. The rest is up to the headspace gauges, its either good to go or else you need most likely a lathe.
 
I've got a couple 308 barrels and a 243 for my Tikka action. Luckily its the same headspace gauges. So far I've just installed the 243 barrel on it, and at 50 ft-lbs it was good when checking with gauges. Thats really the best way to find your torque value for a barrel I'd say but could get expensive.
 
Alright update time.

So as far as the project goes I have taken a slight detour with it but I am back on track.

I have purchased some 338RCM Dies and Headspace Gauges so that is coming together. I will also be looking for some 300RCM stuff but seeing as I have the 300 WSM I am not as worried.

Currently I have two Bolt bodies. One is Magnum Bolt Face one is Standard Bolt Face.

The 6.5x55 Swede heavy barrel has been installed, head spaced and confirmed fitment wise. This now allows me to swap back and forth. Currently I am swapping the internals from bolt body to bolt body but plan to get a set of extractor and ejectors for the second body so I just have to swap firing pin, handle and bolt shroud.

I am temped to have the 300 wsm barrel shortened just for fun. I have two bottom metals the standard CTR and the one that came with the PRC (they come with standard mags) So that is helpful.

I also need to purchase a long and short bolt stop.

My plan is to sell the 270 WSM and the 300 Win Mag Barrel as this is something I don't plan on using. I am waiting on a .338 Blank barrel to show its face on CGN for a good price to store until I can get it chambered in 338 RCM. At this point I will have my bases mostly covered as far as caliber for big game goes. Only thing I am sorting out is a smaller caliber likely short action like a 6mm or something for fun target shooting. I also might turn the 6.5x55 into a target barrel as well.

I hope to put together a photo of everything in the next week or so. Potentially a YouTube video as well.

Cheers,
B
 
A little update. This is the setup so far!

T746TLA.jpg


Cheers,
B
 
I love it!

Thanks, Allot of it has been with your help! Im hoping when funds allow it to send a few barrel requests your way. Just keeping my eyes out for a .338 cal blank that would make a nice 18.6" to 20" barrel.

gunna be putting some range time in over the winter with the 6.5x55 swede just do some testing.

B
 
Did the viper barrel vise ever loose grip while you breaking the factory barrel out? Where are viper vises come from?U.s?

Vice did totally fine so long as I did my part. (I use leather from an old belt to add to the grip) Also its the mallet swings that are the winners for cracking the factory barrel off.

A non site sponsor I believe bought all the maple leaf ones and are stocked in Canada. That said I believe PR Precision makes one as well.

B
 
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