37XC vs 375 ct

jasent

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37XC .vs 375cheytac
What are some pro’s and con’s. I’ve been planning my next build and was thinking 375 ct
Friends recommended 37XC
My next personal goal is 2500-3000 range
Which way would you go in my shoes? And why
 

Geno C.

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Chey Tac, Whidden dies on the shelf and plentiful brass.

Of course, I went snipetac so my logic is out the window 😂
 
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Long Range 338

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375XC sounds great if you already have something like an AXMC or DT in 338LM and can just add the barrel and be in the ELR game. Downside is single feed and less velocity

375CT requires a bigger action but offers more velocity and can be magazine fed. Personally I'm dying to get into a Cadex 375CT but just can't justify it.
 

GIXXER2000

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I just got my 375CT its a Cadex Shadow 32in 1-7 twist and will be shooting 377CE to start as i have 250 of them then i will move up to the 402 CE's. Going to the range in the morning to break it in. I have shot my .338 LM out to 2616 yards so looking to go over 3000 with the 375 CT
 
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Long Range 338

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Not aware specifically but I'm sure the usual OEM barrel providers could do it. Probably start with TS Customs and go from there.
 
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cperazza

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BLUF: 375 CT or 375 CT improve based on performance pass 2,500 yards with 377 gr and 402 gr Cutting Edge MTAC.

Depending on your budget...375 AM or 458 Maximus. APS by Kirby Allen.

Cadex Chassis (Mag 4.725") and Cadex/JJ Rock Co Action. Beefier bolt to handle the cartridge. Barrel 7-8T, length 32".

If budget is a limit, the 375 CT.

Good luck with the build!
 
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THEIS

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Hi,

I think it would really depend on if rifle overall weight was something you were really trying to keep fairly light.
It is not big secret that David used a rifle weight as part of his development process of the 33/37XC. His preference is 25lb and under based from the cash prize he is offering at KO2M based on someone winning with rifle that meets that weight limit.

IF you want 338LM sized weapon system then the 33/37XC.
IF you do not mind stepping up a size on weapon system then the 375CT.

IF you want 33/37XC in repeater form then you are going to build that on a CT sized receiver (With changed boltface of course) anyways :)

I do not have a 33/37XC yet so I cannot give direct experience but it appears it is easier to get low single digit MV deviations with the case design and slightly more optimize powder fill ratio than the CTs.

The larger action build (CT) can always be modified to handle the smaller cartridge but the smaller action build (XC) really cannot be modified to handle the larger cartridge :)

Sincerely,
Theis
 

Long Range 338

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Even though the OP was concerning the 375XC and 375CT I'm going to mention the 375 Enabler only because of Bryan Litz's comments in his write up about the Enabler. In summary he was stating that the large capacity cartridges were having issues with velocity deviation due to the fouling caused by the larger case capacities. I'm not sure where the 375CT would fall into that category but I assume the 375XC with its lesser case capacity would be right in line with the 375 Enabler...
 

LastShot300

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Even though the OP was concerning the 375XC and 375CT I'm going to mention the 375 Enabler only because of Bryan Litz's comments in his write up about the Enabler. In summary he was stating that the large capacity cartridges were having issues with velocity deviation due to the fouling caused by the larger case capacities. I'm not sure where the 375CT would fall into that category but I assume the 375XC with its lesser case capacity would be right in line with the 375 Enabler...
The paper on the Enabler is loaded with bias so it's far from being a fair and serious analysis (with lots of apple to oranges...) and I love AB claim about the Cheytac not being "magazine feed-able with the longer bullets" WTF???
Having said this, I'm working on a 37XC build (not 375XC :oops: ) and the performance is there. Don't understand why some people claims the 375CT can go faster because most of the comparisons are based on different barrel length. 37XC case is longer than 375CT which at least should put them on the same velocity potential at the SAME barrel lenght.
 
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jasent

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Weight is not really a concern( would like to keep it under 40lbs). Not worried about mag feed but it would be nice option.
Other thing I didn’t mention is I can get: Lawton 8000 action (marked CheyTac m310)
-Jewel JT-09 trigger
-McRee Precision chassis
For $1500 from a friend.
I do not have a Lapua size action currently, but could get a savage 112 target for around 900 new but don’t like the stock or trigger
 

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Long Range 338

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The paper on the Enabler is loaded with bias so it's far from being a fair and serious analysis (with lots of apple to oranges...) and I love AB claim about the Cheytac not being "magazine feed-able with the longer bullets" WTF???
Having said this, I'm working on a 37XC build (not 375XC :oops: ) and the performance is there. Don't understand why some people claims the 375CT can go faster because most of the comparisons are based on different barrel length. 37XC case is longer than 375CT which at least should put them on the same velocity potential at the SAME barrel lenght.
I've no experience or knowledge to disagree with you in the least. The info on the Enabler is certainly a sales driven informational piece that paints the product in its best light.

I found it interesting and educational that the fouling was driving the velocity deviations. Good info to know going forward for sure.

Are you going to be posting your experience with the 37XC? I would be very interested to see your results, it looks to be a very promising round.
 

GIXXER2000

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I just fired my Cadex 375CT and with the 377 Cutting Edge seated to the seal tight band in am 38 off the lands and they just fit in the mag. I am thinking of going up to the 402 CE and i know they will be too long.
 
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biffj

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I'd do some research before committing but the 37XC does seem like a decent sort with a lot less upfront cost than buying a big enough action for the CT. As for the DT there are guys who do barrels. I built a 33XC for my DT and so far I'm impressed. 31" barrel and I'm getting 3350 out of the 265 Cutting Edge Lazers. Heading out to a shoot next week to see how far we can go. I'm going with a friend who was hitting at 2700 last year with his Desert Tech HTI in 375 Cheytac. We shall see how it goes.
I will say the 33XC brass from Peterson seems to be pretty good. The dies I got from Tubb for the XC can be used for the 33 or 37 by switching bushings and the dies work well. I'm seeing .001" of runout or less so far. I like the idea of being able to use my 338 Lapua action for the longer range 33XC. Love to have the Cheytac but don't want to spend $6K to get started.
Brass for the XC is a little over $2 a case but I'm using the press, shell holder and other equipment I've already got for the 338 Lapua so don't need to buy all that.

You must choose. I'm thinking I might buy a blank for the 37XC and give it a shot in the not too distant future.

Frank
 

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LastShot300

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I've no experience or knowledge to disagree with you in the least. The info on the Enabler is certainly a sales driven informational piece that paints the product in its best light.

I found it interesting and educational that the fouling was driving the velocity deviations. Good info to know going forward for sure.

Are you going to be posting your experience with the 37XC? I would be very interested to see your results, it looks to be a very promising round.
Yes sir, will follow on as soon as I get it done.
 
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Geno C.

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I'd do some research before committing but the 37XC does seem like a decent sort with a lot less upfront cost than buying a big enough action for the CT. As for the DT there are guys who do barrels. I built a 33XC for my DT and so far I'm impressed. 31" barrel and I'm getting 3350 out of the 265 Cutting Edge Lazers. Heading out to a shoot next week to see how far we can go. I'm going with a friend who was hitting at 2700 last year with his Desert Tech HTI in 375 Cheytac. We shall see how it goes.
I will say the 33XC brass from Peterson seems to be pretty good. The dies I got from Tubb for the XC can be used for the 33 or 37 by switching bushings and the dies work well. I'm seeing .001" of runout or less so far. I like the idea of being able to use my 338 Lapua action for the longer range 33XC. Love to have the Cheytac but don't want to spend $6K to get started.
Brass for the XC is a little over $2 a case but I'm using the press, shell holder and other equipment I've already got for the 338 Lapua so don't need to buy all that.

You must choose. I'm thinking I might buy a blank for the 37XC and give it a shot in the not too distant future.

Frank
I use a regular old rock chucker to load my snipetac. It fits just fine so don’t let that deter you from the bigger round.
 

Geno C.

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The reason I went for the snipetac was; 1, I got a good deal on an unbuilt package of parts, and 2, I wanted to run the high Cheytac load at lower pressure. I’ve watched enough of the cheytac guys running the mid 3100s and have to beat their bolt open from time to time that I knew I wanted to avoid that. I don’t know if the xc or enabler has that problem or not.
 
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