Forums › Forums › General Discussion › T3/T3x/CTR compatibility
T3/T3x/CTR compatibilityPosted by dimwit on June 25, 2016 at 3:16 pm
For those of you that have a bunch of Tikkas…..
1) I know there's an extra cut on the bottom of the CTR receivers,but will the ctr stock, etc work with a standard T3 receiver?
2) this may require some minor surgery, but I'm curious if the modular forearm piece from the T3x varmint/tactical will fit on an older t3 stock.
Anybody know?Ericbc7 replied 6 years, 7 months ago 4 Members · 17 Replies
T3/T3x/CTR compatibilityEricbc7 updated 6 years, 7 months ago 4Members · 17 Replies
Ericbc7MemberJune 25, 2016 at 5:15 pm21 Bullseyes
Interesting question, regrettably I don't know the answer 🙁
Dog DownMemberJune 26, 2016 at 4:09 pm105 Bullseyes
I have not tested it but I have heard from a reliable source that the forearm modular piece will fit on on all T3 stocks…only the checkering/ grip being different, just drill a hole in the regular stocks to secure it at a screw/ bolt point.
dimwitMemberJune 28, 2016 at 11:48 am1 Bullseye
Anyone else mind weighing in? Particularly on the first question.
Dog DownMemberJune 28, 2016 at 1:28 pm105 Bullseyes
Sorry man forget to answer that question…
The CTR bottom metal is wider then the standard T3 or T3x plastic bottom. They are 2 different inlets.
They are not interchangeable this way without milling.
dimwitMemberJune 28, 2016 at 8:04 pm1 Bullseye
Yeah, I'm aware of that. My main concern is regarding whether the CTR/TRG mag will seat properly against a standard T3 action.
Dog DownMemberJune 29, 2016 at 3:52 am105 Bullseyes
NO….the mag will not seat properly. I've tried this test before with a standard 308 Battue action on my CTR 308 platform…
The slot cut out of the CTR receiver allows the TRG mag to angle slightly more upward at the front allowing the mag to function properly with the proper feed ramp/angle.
You can however assemble a gun with the CTR stock/bottom & standard T3 action,…the mag will even insert and clip into place but it will be slightly angled downward and the rifle will not feed rounds, the ramp angle is changed and it jams when trying to cycle the bolt.
The only way around it is to mill the action or play with altering the mag to change the seating angle.
I myself have not tried to alter the $200 mag…but it may be possible.
I've tried to do exactly what you are asking for my 300wsm….install the standard 300wsm action on the CTR stock and bottom metal…the 308 TRG mag will hold 5rds of 300wsm perfectly with a longer coal, only issue being the feed angle again…it doesn't work. Thats why Tikka milled the slot…its specific to the bottom metal and TRG mag functioning properly,…I think it on purpose to prevent the two actions from being interchangeable on the CTR platform.
dimwitMemberJune 29, 2016 at 4:10 am1 Bullseye
I had a feeling. Thanks!
drdirtMemberJune 29, 2016 at 6:48 pm1 Bullseye
I want to do this as well, to run a 6.5 SAUM I built from a T3 in a CTR stock and bottom metal. Good to hear that the TRG mag will work with WSM cartridges. I am going to get the receiver milled by a smith sometime soon to allow the mag fit. In fact, maybe Jason could do this, I'll check to see if Incan drop it off when I pick up my T3X 6.5CM that is on order.
Dog DownMemberJune 29, 2016 at 9:35 pm105 Bullseyes
keep us posted….
dimwitMemberJuly 11, 2016 at 3:27 am1 Bullseye
Slapped the CTRx stock/dbm on my .22-250 varmint model, and it's running fine so far, with one exception. The bolt doesn't travel back far enough to grab the round if it's seated to the rear of the magazine.
I had heard that GRS ships a different bolt stop with the Bolthorn chassis that allows for an extra 2mm of extra travel, so I threw the calipers on there, and it came out to .080″ on the dot. Looks like GRS knows what they're doing. Unfortunately the factory bolt stop doesn't have enough meat to be cut back that far, so I'll have to get something else, or shim the rear of the magazine to let the round sit that much further forward. Other than that, runs like a champ.
I'm not sure about DogDown's experience as I actually couldn't replicate the problem he had. I'll probably end up getting the actions modified anyway, just to be on the safe side.
Just need another one for my creedmoor now. 🙂
Dog DownMemberJuly 11, 2016 at 1:21 pm105 Bullseyes
Good to know the 22-250 rounds at least cycle in the gun with the combo, but not sure how you got the mag to seat properly with out the slot in the receiver, thinking its just luck that it functions with this round because the mag is not not fully seated in its correct position. As mentioned it did not feed my 308 rounds with its larger case when I did this experiment.
You can buy the long travel bolt stop from here…
Dog DownMemberJuly 19, 2016 at 5:10 pm105 Bullseyes
Did you get everything to work out…only asking cause I saw your post wanting to buy CTR parts.
Still feeding the rounds properly?
dimwitMemberJuly 20, 2016 at 1:27 am1 Bullseye
Seems to be. I'm about to send my creedmoor off to get it Inletted properly, and I'm going to have them make the ctr action cut to see if it makes any difference. Bolt throw still seems to be the main issue, which is puzzling to me–Unless they ship the ctr with a modified bolt stop, which doesn't sound like something tikka would do.
dimwitMemberJuly 29, 2016 at 2:46 pm1 Bullseye
In the interest of completing the circle on this question, here's a little update.
I was going to try to get the CTR dbm inletted into my B&C m40 stock. Turns out this is a no-go. The aluminum skeleton is actually narrower than the cut needed to fit the floor plate. Sooo…. I got a new Manners. EuroOptic had a few Manners T4A CTR drop-in stocks in inventory, so I ordered one. It fits like a glove and the TRG mag feeds flawlessly, even with my unaltered T3 lite action. Also, I modified the bolt stop/release to the long action length which allows more bolt travel than is necessary, but provides the extra bit of travel needed to get behind the top round in the magazine. I'll post some pictures if I can take it out to the range this weekend.
Dog DownMemberJuly 29, 2016 at 4:04 pm105 Bullseyes
Glad you got everything working right and the new stock should be awesome.
Post some pics of the combo and let us know how the range results look.
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