Tikka Action Question(s)

[cjs88]

I've read that all Tikka actions are long actions with bolt stops to accommodate the certain caliber. Is that true?
If so, would a smith be able to easily convert it from SA caliber to LA caliber?
If also true, can it be easily converted to a caliber with a bigger bolt face diameter or would it require a different bolt face?

 

[Jrb572]

Yes it is a long action. It magazine and bolt stop that make the difference

No it would require another bolt. LRI makes Replacment bolts

 

[stello1001]

Yes and yes and you would require a new bolt or opening up your current bolt...

 

[cjs88]

Yes it is a long action. It magazine and bolt stop that make the difference

No it would require another bolt. LRI makes Replacment bolts

Fuck me, totally forgot they made those. Thanks for reminding me.

 

[cjs88]

Yes and yes and you would require a new bolt or opening up your current bolt...

That's what I meant. I want to convert my 6.5CM to 6.5 swede. I have seen conflicting data though, some say they're the same, some say the 6.5 swede is a slightly bigger face.

 

[Jrb572]

Tikka T3/T3x Bolt Stop - MOUNTAIN TACTICAL®

Specifications:

tikkaperformance.com

 

[Chickentoast]

Tikka LA is 3.56" COAL though fyi

 

[stello1001]

That's what I meant. I want to convert my 6.5CM to 6.5 swede. I have seen conflicting data though, some say they're the same, some say the 6.5 swede is a slightly bigger face.

Swede is not a magnum...
At least to my knowledge the 6.5 "swede" is the 6.5×55 which shares the same bolt face as 6.5cm...

 

[cjs88]

Swede is not a magnum...
At least to my knowledge the 6.5 "swede" is the 6.5×55 which shares the same bolt face as 6.5cm...

Didn't say it was a magnum. I've just seen .473 for 6.5CM and .480 for 6.5 swede. Just wanted to make sure everything works for the switch.

 

[stello1001]

Didn't say it was a magnum. I've just seen .473 for 6.5CM and .480 for 6.5 swede. Just wanted to make sure everything works for the switch.

Your right, I've read similar things before but I cannot confirm. I believe some people use brass made with the smaller dimensions in order to use common bolt face and others use brass that's a bit larger so...


Hopefully somebody with experience can chime in.

Whichever way it ends up being, your bolt face could be opened up if needed.

 

[Ndbowhunter]

Tikka LA is 3.56" COAL though fyi

where did you get that measurement from?

 

[Chickentoast]

where did you get that measurement from?

My magazines

 

[ma smith]

Your right, I've read similar things before but I cannot confirm. I believe some people use brass made with the smaller dimensions in order to use common bolt face and others use brass that's a bit larger so...


Hopefully somebody with experience can chime in.

Whichever way it ends up being, your bolt face could be opened up if needed.

.007 is only 7 thou

Spec is typically written
.478 (-.010)
.473(-.010)
Etc

W/ 10 thou allowance.

 

[Ndbowhunter]

My magazines

you make magazines?

 

[wpeach1912]

Pretty sure the 3.560 is just how far the bolt can go back. With a replacement bolt stop they can handle significantly longer, but you need to start machining the front of your trigger housing. You can make 3.715 mags fit then

 

[Chickentoast]

you make magazines?

Just read them

MDT mags are 3.56 FYI - my std Tikka LA mag is a little shorter internal, but close.

 

[Ndbowhunter]

i know what factory mags COAL is, i was just curious where the 3.56" number comes from.

been a minute since i've owned a LA cartridge in a tikka. will a loaded 3.6" round go out the ejection port?

 

[Chickentoast]

i know what factory mags COAL is, i was just curious where the 3.56" number comes from.

been a minute since i've owned a LA cartridge in a tikka. will a loaded 3.6" round go out the ejection port?

Unsure, I'm running a 6.5 Max around 3.07 - if you need to know, I can seat one tomorrow and check it. Just LMK

 

[Ndbowhunter]

i'm curious. i dicked around getting 208 eld-me in a 300wm and between the crazy long throat and short ejection port.. there wasn't room to groove.

ejection port only measures 3.1" how i'm looking at it.

 

[Chickentoast]

I tried a 300 RUM case with a 220 lrht and marked the bullet where it hit the ejection port - looks like 3.56 is just about max to eject a live round - might even need to be a little shorter.

 

[Pharmseller]

I swapped out the SA stop for a LA stop on two of my 7mm-08s. I’m using .30-06 magazines and loading 150 Eldx long.

Really slick.

 

[Ndbowhunter]

dump those 150's for 162 eld-m.

lose about 100fps but gain .1bc

 

[Pharmseller]

dump those 150's for 162 eld-m.

lose about 100fps but gain .1bc

I thought about it but I don’t kill past 550, maybe 600 yards.

At what distance does the improvement in bc overcome the loss in velocity?

And how does the M construction compare to the X? I use the 162 ELDX with great results in my 7mm Rem Mag.

When I first considered transitioning from the 140 Partition to the 150 ELDX I called Hornady for load data. The tech I spoke with told me they developed the 150 grain with the 7mm-08 in mind.




P

 

[762 ULTRAMAGA]

I thought about it but I don’t kill past 550, maybe 600 yards.

At what distance does the improvement in bc overcome the loss in velocity?

And how does the M construction compare to the X? I use the 162 ELDX with great results in my 7mm Rem Mag.

When I first considered transitioning from the 140 Partition to the 150 ELDX I called Hornady for load data. The tech I spoke with told me they developed the 150 grain with the 7mm-08 in mind.




P

Don't do it the eldm is pretty damn explosive

 

[Pharmseller]

dump those 150's for 162 eld-m.

lose about 100fps but gain .1bc

I did the math. Out to 600 there isn’t much advantage over the 150 and I already have a great load.

P

 

[4O6shootist]

Factory tikka long action mags are around 3.4" internal. I doubt Tikka made a specific x55 swede bolt, they will all probably take it. Swap your bolt stop to long action, get some 30-06 factory mags and roll. As far as barrel, thats all up to you, but I'd personally go with an improved chamber since there is so much taper, and room to go with it. 260ai would also be a good option.

 

[clcustom1911]

Factory tikka long action mags are around 3.4" internal. I doubt Tikka made a specific x55 swede bolt, they will all probably take it. Swap your bolt stop to long action, get some 30-06 factory mags and roll. As far as barrel, thats all up to you, but I'd personally go with an improved chamber since there is so much taper, and room to go with it. 260ai would also be a good option.

It's not only the mags that limit OAL, the bottom inlet of the action is only 3.41". I have 300WM AI mags in my T3x that can go to 3.8, but the action opening on the bottom won't allow any rounds in that are longer than 3.41".

You'll have to open up the bottom of the action if wanting to go longer than that.

 

[4O6shootist]

It's not only the mags that limit OAL, the bottom inlet of the action is only 3.41". I have 300WM AI mags in my T3x that can go to 3.8, but the action opening on the bottom won't allow any rounds in that are longer than 3.41".

You'll have to open up the bottom of the action if wanting to go longer than that.

Redsnake makes an aics long action bottom metal that will take accurate 3.715 external with 3.61 internal. This kit requires no action mods to install just minor stock inletting.

 

[clcustom1911]

I understand. I have a CDI Long action bottom metal that uses AICS 300WM magazines. The actual Tikka action bottom inlet is only 3.41" long. If you have a round with an OAL that is longer than 3.41", it will fit obviously fit in the AICS/Accurate mag, but when you insert the magazine into the bottom metal and it locks, the tip of the bullet will be pushed down by the action like trying to put a rectangle into a square, because you can't push a 3.42" long round through a 3.41" hole.

 

[ARShooter91]

Mine will mag feed 3.615(probably 10 thou more) and eject live rounds as well. Bought it second hand off here with work already done to make it possible. Receiver milled and bolt stop swapped was all I thought was done. I'll have to check