.338 Snipe-Tac Build

.338 Snipe-Tac Build

  • Remington 700

    Votes: 2 7.7%

  • Savage 110

    Votes: 2 7.7%

  • Custom Action

    Votes: 22 84.6%
  • Total voters
    26
  • Poll closed .
mitch260

mitch260

Private
Full Member
Minuteman
Jun 12, 2012
46
0
Michigan
#1
I am looking at building a .338 snipe-tac. My problem is the action. Based on measurements I have taken and recommendations I have read online, it should be possible to build on a r700 or sav110. If you have a reason not to use one of these actions let me know but give me good details to support you answer as they should work. Thanks.

P.S. I would use a PTG bolt for the 700 and recut the bolt face or do the same thing to a PTG sav110 bolt head.
 
#4
Snipetac is based off the 408 cheytac case which is way to big for the 700 action. The largest bolt face the 700 can use is the lapua and that's pushing it. The other thing is coal of a loaded round, you'll prob not be able to eject it from a 700. I would go with a 408 based action like the Stiller Tac408 and be done with it. You'll spend that much trying to make a Savage or Rem action work anyway.
 
#5
Wyfox said:
Snipetac is based off the 408 cheytac case which is way to big for the 700 action. The largest bolt face the 700 can use is the lapua and that's pushing it. The other thing is coal of a loaded round, you'll prob not be able to eject it from a 700. I would go with a 408 based action like the Stiller Tac408 and be done with it. You'll spend that much trying to make a Savage or Rem action work anyway.
Click to expand...


^^^^^ This was my first thought when I read the OP. You will have to go custom action for this project.
 
#6
Wyfox said:
Snipetac is based off the 408 cheytac case which is way to big for the 700 action. The largest bolt face the 700 can use is the lapua and that's pushing it. The other thing is coal of a loaded round, you'll prob not be able to eject it from a 700. I would go with a 408 based action like the Stiller Tac408 and be done with it. You'll spend that much trying to make a Savage or Rem action work anyway.
Click to expand...

Correct. Not to mention how ludicrous the .338 SnipeTac is for 99.99999% of all the shooting ever done.
 
  • Like
Reactions: wulfhnt44
#7
I did think the same way, but, upon studying dave viers website he states that his .375 VM with a bolt face of .690 will fit in an action with a .750 diameter bolt. That's .060 difference. the chey-tac case has a .640 bolt face and a r700 and 110 can very easily have .700 bolt diameter. Still .060 difference, but because of the smaller diameter of both components it is a higher percentage of difference. Thus making it a better fit than that of the .375 VM in an action with a .750 bolt diameter. So I argue that the action is big enough for a single shot rifle in a chey-tac variant. And I wouldn't use factory parts I would upgrade with PTG components.
 
#8
Bolt face (and a host of other issuses) aside - have you done the calculations to ensure that there is sufficient shear strength in the lugs to prevent you from catching the bolt with your face? (Don't forget to run those calcs with the peak pressure acting upon the entire bolt face diameter, as would occur with a case head separation) Have you done the hoop strength calculation on the barrel tenon to ensure that it's not going to balloon cases upon each firing?
 
#12
mitch260 said:
I am looking at building a .338 snipe-tac. My problem is the action. Based on measurements I have taken and recommendations I have read online, it should be possible to build on a r700 or sav110. If you have a reason not to use one of these actions let me know but give me good details to support you answer as they should work. Thanks.

P.S. I would use a PTG bolt for the 700 and recut the bolt face or do the same thing to a PTG sav110 bolt head.
Click to expand...

Mitch, I'd hate to read about you in the future getting seriously hurt or killed trying to shoehorn with such a attempt.

Spend the money and get a custom action or compromise 200 fps and do a 338L AI instead.
 
#13
mitch260 said:
I did think the same way, but, upon studying dave viers website he states that his .375 VM with a bolt face of .690 will fit in an action with a .750 diameter bolt. That's .060 difference. the chey-tac case has a .640 bolt face and a r700 and 110 can very easily have .700 bolt diameter. Still .060 difference, but because of the smaller diameter of both components it is a higher percentage of difference. Thus making it a better fit than that of the .375 VM in an action with a .750 bolt diameter. So I argue that the action is big enough for a single shot rifle in a chey-tac variant. And I wouldn't use factory parts I would upgrade with PTG components.
Click to expand...

Well, it was nice knowing you! Have someone report back to us when it blows up in your face :D
 
#14
Skip the 338 Snipetac and get a 375 CheyTac. Recently shot both....a friends. The use of an extra 25 grains of powder in the SnipeTac didnt give a enough of a difference over a standard 338Lapua to get my attention. He had a Viers 375 CheyTac. It was a hammer.....4-shot group at 1200 yards was around 3 inches with the SMK 350 and Retumbo. That got my attention. Ask JW Huskey....he can back my story up. Got pics just too dumb to figure out how to post.

Ed
 
#15
Does anyone know what the bolt diameter of the stiller tac408 is? Just out of curiosity. The price isn't too bad. The only reason I am considering a .338 snipe-tac is because there are more bullet choices for .338 than .375, even though I think the .375 chey-tac is better. if there were more bullet choices I would go .375
 
#16
Pretty sure the bolt is .750... I have a 1.400 dia. Stiller SS 408 action here. They also make a 1.600" diameter action. One thing you don't realize is the lugs on these actions are about twice as long as a standard action boosting the shear strength by a goodly amount. DO NOT use any standard action for this! The barrel thread tenon is also very long, I haven't measured dimensions yet but it looks to be close to 1.5". If you want an action, I believe bugholes has a SS 1.600 Stiller in stock, or they did the last time I talked to Harold.
 
Last edited:
#17
I didn't build the rifle because of the many points addressed above, and I have gotten much more experience building .308's and other regular calibers. I still want a .375 cheytac in the near future and am planning to use the stiller tac .408. But.... in theory I still think its possible on a savage action (but I don't plan to try it, and don't recommend trying it). Here is why...

585 HE -- Barrels of Cases -- - Long Range Hunting Online Magazine

This cartridge has a rim .654" in diameter and the diameter in front of the belt is the same as a chey-tac and he says he has loaded them up to 65,000 psi, and... chambered them in Savages and Rugers.

So... if that works, why wouldn't a Chey-tac work? Aside from the size of the extraction port. Especially with a Lapua bolt head with lugs that are .050" longer than standard long action ones and the larger barrel tenon. Like I said, I wouldn't try it now after having more experience and wouldn't recommend anyone else do it, but it seems Like if it can handle that cartridge then it would handle a chey-tac. Unless anyone has proof otherwise, I'd think its possible (in theory). I'm just looking for proof as to why it wouldn't work, purely for academic purposes.
 
#18
I own a 375CT.

Academically speaking, I would not trust my face to ANY piece of shit factory action with a CheyTac case!

Stiller makes the CheyTac action the size it is for a reason, strength!

Buy the Stiller and move on! Academically speaking of course!

Glenn
 
Last edited:
#19
mitch260 said:
I didn't build the rifle because of the many points addressed above, and I have gotten much more experience building .308's and other regular calibers. I still want a .375 cheytac in the near future and am planning to use the stiller tac .408. But.... in theory I still think its possible on a savage action (but I don't plan to try it, and don't recommend trying it). Here is why...

585 HE -- Barrels of Cases -- - Long Range Hunting Online Magazine

This cartridge has a rim .654" in diameter and the diameter in front of the belt is the same as a chey-tac and he says he has loaded them up to 65,000 psi, and... chambered them in Savages and Rugers.

So... if that works, why wouldn't a Chey-tac work? Aside from the size of the extraction port. Especially with a Lapua bolt head with lugs that are .050" longer than standard long action ones and the larger barrel tenon. Like I said, I wouldn't try it now after having more experience and wouldn't recommend anyone else do it, but it seems Like if it can handle that cartridge then it would handle a chey-tac. Unless anyone has proof otherwise, I'd think its possible (in theory). I'm just looking for proof as to why it wouldn't work, purely for academic purposes.
Click to expand...

Its not just the bolt face size either though. Youre gonna need at least a 1.125 if not 1.250 diameter tenon to be on the safe side. Not to mention the R700 already has trouble with lug setback with a .338 Lapua, forget about the Cheytac.


Im not one to discourage experiementation though. PO Ackley once touched off .30-30 rounds I believe it was, in a chambered barrel using only a hammer and nail and no action to hold the rounds in. By all means, if you have the money, try chambering a Savage for a Cheytac. But please do not stand anywhere near the rifle when you touch it off. You`d be best off getting behind a safe barricade and using a string to pull the trigger on multiple peak pressure loads. Dont just say one and done. I would fire at least 10 high pressure loads from a safe barricade position before putting my head anywhere near the action when lighting that sucker off. You`ll also want to be able to discern lug setback. Nothing is impossible, but I would not bet my skull`s longevity on a Savage being safe to use with a .338/.375/.408 CT.
 
#22
Forgetful Coyote said:
Its not just the bolt face size either though. Youre gonna need at least a 1.125 if not 1.250 diameter tenon to be on the safe side. Not to mention the R700 already has trouble with lug setback with a .338 Lapua, forget about the Cheytac.


Im not one to discourage experiementation though. PO Ackley once touched off .30-30 rounds I believe it was, in a chambered barrel using only a hammer and nail and no action to hold the rounds in. By all means, if you have the money, try chambering a Savage for a Cheytac. But please do not stand anywhere near the rifle when you touch it off. You`d be best off getting behind a safe barricade and using a string to pull the trigger on multiple peak pressure loads. Dont just say one and done. I would fire at least 10 high pressure loads from a safe barricade position before putting my head anywhere near the action when lighting that sucker off. You`ll also want to be able to discern lug setback. Nothing is impossible, but I would not bet my skull`s longevity on a Savage being safe to use with a .338/.375/.408 CT.
Click to expand...

If one was to try it, that would be the way. My main point was that someone is shooting a cartridge very similar in size to the Chey-Tac in savage actions. Seems like it would be possible. But like you said, you would want to do some major testing first.
 
#23
mitch260 said:
I didn't build the rifle because of the many points addressed above, and I have gotten much more experience building .308's and other regular calibers. I still want a .375 cheytac in the near future and am planning to use the stiller tac .408. But.... in theory I still think its possible on a savage action (but I don't plan to try it, and don't recommend trying it). Here is why...

585 HE -- Barrels of Cases -- - Long Range Hunting Online Magazine

This cartridge has a rim .654" in diameter and the diameter in front of the belt is the same as a chey-tac and he says he has loaded them up to 65,000 psi, and... chambered them in Savages and Rugers.

So... if that works, why wouldn't a Chey-tac work? Aside from the size of the extraction port. Especially with a Lapua bolt head with lugs that are .050" longer than standard long action ones and the larger barrel tenon. Like I said, I wouldn't try it now after having more experience and wouldn't recommend anyone else do it, but it seems Like if it can handle that cartridge then it would handle a chey-tac. Unless anyone has proof otherwise, I'd think its possible (in theory). I'm just looking for proof as to why it wouldn't work, purely for academic purposes.
Click to expand...
#1 is Safety/ pressures created will be the problem. I don't think any gunsmith would build something for you on a factory action which would be a death trap.
 
You must log in or register to reply here.

Similar threads

M
338 Lapua mag build
Replies
5
Views
330
mattman215
M
JakeRuppert
R700 R7SAUM
Replies
0
Views
65
JakeRuppert
JakeRuppert
A
510 Whisper Build Advice (Stock/Bottom Metal/Magazines/Twist/Barrel Length)
Replies
25
Views
1K
jacklikesbigbores
J
Billygoat934
CDG, 737r or Fuzion for PRS build
Replies
65
Views
2K
Billygoat934
Billygoat934
Stugots
New 8.6 Blackout Build
Replies
7
Views
933
Stugots
Stugots
Top Bottom
Back
Home
Forums
Merch
Alerts