I’m getting pretty much the same out of my .308 Cross running a can. Right around 2600 fps with 165s and 168s over Varget and Ramshot TAC.
- Thread starter oda175365
- Start date
Picked up a Cross. Got it home and I wish I had spent more time inspecting it at the FFL. No shots down the barrel yet.
Things I noticed that I didn't like.
1. The safety has an extra detent like many of you have experienced.
2. The barrel is not centered in the handguard. Not sure if this is handguard or barrel that is the problem. I loosened up the rail and it's better, but still not perfect.
3. I just noticed damage to the crown. A gouge out of the lip and one on the flat. Nothing near the bore. I'm not sure whether this will affect accuracy or not.
I have a Manson 11 degree crowning kit. I'm considering re-crowning this thing and tossing a brake on it afterwards.
Thoughts on the crown?
Things I noticed that I didn't like.
1. The safety has an extra detent like many of you have experienced.
2. The barrel is not centered in the handguard. Not sure if this is handguard or barrel that is the problem. I loosened up the rail and it's better, but still not perfect.
3. I just noticed damage to the crown. A gouge out of the lip and one on the flat. Nothing near the bore. I'm not sure whether this will affect accuracy or not.
I have a Manson 11 degree crowning kit. I'm considering re-crowning this thing and tossing a brake on it afterwards.
Thoughts on the crown?
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.308 is on my mind. I don't reload .308 so that is the main reason why I prefer to stick with 6.5 since I reload for that caliber and have plenty of components.
Wow, either that handguard or the barrel is way off. I've seen a couple at my LGS, neither was very good finish wise. Price is right though.
I unscrewed the handguard and 1 screw on the optic mount. I re-aligned the handguard and it seems better now. It's not perfect though nowhere near as noticeable.
I called Sig service and sent pics. They said they would gladly take a look and address everything though it would likely be a 3 week turnaround.
The rep suggested I try and remove any high spots off the crown with some 0000 steel wool and oil and if it shoots wonky they would take it in. He made notes on my serial # that this was damage done before shooting or using it.
So service-wise I feel like I've been taken care of.
I have to get my optic on and hit the range to see what it does.
I called Sig service and sent pics. They said they would gladly take a look and address everything though it would likely be a 3 week turnaround.
The rep suggested I try and remove any high spots off the crown with some 0000 steel wool and oil and if it shoots wonky they would take it in. He made notes on my serial # that this was damage done before shooting or using it.
So service-wise I feel like I've been taken care of.
I have to get my optic on and hit the range to see what it does.
Are you talking about the handguard?
If so there are 4 screws (2 on each side) and the scope base (which is a 20moa base) needs to come off.
There is a ball and spring under the scope base that you have to be careful not to lose when you remove it.
I'm dumb. What's the extension?
Looks similar to this one. The barrel screws into it.
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It is quite literally the only thing I have not taken apart on the rifle.
Re: the handguard alignment... I have a few rifles/handguards that attach similarly to the Cross (I have a Cross too) and that type of handguard is a pain in the ass to get dead-center. There's enough deflection available when the screws aren't tight that you can move the handguard quite a bit in any direction, then when you tighten down the screws they don't really self-center things like you'd think they would. What you've gotta do is kind of a guess-and-check thing where you hold or preload the handguard in one direction, then carefully go around and snug down the screws and see if it looks centered before tightening them fully. With some time you can get it pretty much right on. On the other hand, if it's off a bit it doesn't make any difference in how the rifle shoots, it just looks bad.
Don’t know why you would, unless you are replacing the barrel or had a headspace problem.
Would love one in .223
Because I can...and if truly modular and user serviceable as Sig states, then why not?
Fucking up your headspace comes to mind, but if you have the equipment, skill and know how then I guess you could consider it user serviceable.
This might be a rehash of somewhere else in this long thread but here it goes.
First, if you don't know how to properly barrel a bolt gun I don't recommend you do this. Take it to a gunsmith and let them do it. You can pull off the extension nut and reinstall per the Sig manual all you want but once you touch the barrel nut knowledge of headspacing and the proper tools and techniques come into play. If you do it wrong you're asking for trouble including injury or worse. TAKE IT TO A QUALIFIED GUNSMITH. My post is not an instruction manual. It's just for information.
Ok, Sig's design is somewhat unique in the fact that it uses two separate nuts that DON'T interface or touch each other. Essentially one nut, I'll call it the extension nut, holds the barrel extension to the receiver. The other nut is the barrel nut. The barrel nut operates exactly the same way as a regular barrel nut from a Savage, Remage, Howage and so on except that it secures the barrel to an extension instead of a receiver. Both nuts interface the extension on the same shoulder (but don't overlap or touch) and have very different purposes. Using a 12 point, 1 - 1/16" box end wrench you can actually remove the barrel from the extension while the extension is still installed and secured by the extension nut in the receiver.
This rifle is getting a new 6CM barrel and while it's apart I thought I would take some pics. It was originally a 308. Shockingly there doesn't seem to be any pics of the extension or how it works with the receiver on the internet. At least I could not find any. One last note, when I was disassembling this gun both the extension nut and barrel nut were not even close to being tight. This might explain why some rifles are not grouping well or have off center barrels. Also, check your crown, this rifle was not crowned at all. It actually had a burr that was wearing down when I noticed it. Crowning a barrel is pretty easy and it did improve the accuracy but the main accuracy culprit of this rifle I suspect was the loose nuts.
I hope these pics help answer questions.
Assembled minus scope rail and hand guard.
Extension nut removed with standard AR wrench. At this a point very gentle pull and wiggle of the barrel will allow the barrel extension to slide out of the receiver with the barrel.
Barrel and barrel extension removed from receiver. The barrel was secured in a Viper Barrel Vise for extension nut and barrel nut removal.
Bare extension. This is the point of no return if the barrel nut is loosened at all. If the extension is turned in relation to the barrel even in the slightest it will change the headspacing on the rifle. This is where tools, knowledge and experience are needed to safely reassemble the rifle. The barrel nut is removed with a 1-1/16" box end wrench. Just like any other variable shoulder barrel, the barrel nut is a jam nut. The barrel nut must move towards the muzzle to separate it from contacting the extension. Then the extension simply screws off by hand and the barrel nut right behind it. There are NO left hand threads in this design. Just good ole' fashion Savage cost cutting engineering.
Extension, breech end. Bolt head lug raceways at 10, 2 and 6 along with the feed ramp.
Extension, barrel thread end. Lugs visible at the bottom.
Extension nut. Shoulder that interfaces with the extension visible.
Extension and extension nut relationship
Extension, extension nut and barrel nut relationship
Barrel nut sitting inside extension nut. You can see they do not interface or touch each other.
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Thank you for taking the time to write this up and add pics. It is exactly what I thought, but really needed that confirmation.
Thanks for that explanation and pics.
Would you mind giving your opinion on my above picture with the damaged crown face?
Would you re-crown it? I have an 11 degree crowning kit from Manson ( I could also send back to Sig, wait 3 weeks and see what comes back)
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FYI, I'm not a gunsmith. The gunsmith that taught me how to do basic barrel work was a stickler about the crown so I'm a little sensitive to it. Since recrowning is very easy and it doesn't take much to get a great result I would recrown if it were my rifle. However, if you do it remember that Sig might not warranty the gun in the future.
I don't know anything about a Manson kit but I bet it would make a nice improvement to the crown. I use a 45 degree Brownells cutter with Ultra S/P cutting oil and the appropriate caliber pilot. Then I lightly lap with 600 grit lapping compound and a brass lapping radius tool. I prefer my crowns to be a little deeper so I can see the transition better. I also use a magnifying glass to ensure any minute burr is removed by the lapping. It usually only requires a light touch spun with the fingers a few times.
Below is the before and after. The after shot was just taken with about 250 rounds after the crown work.
I hope this helps.
JB
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That looks great.
The damage on mine isn't close to the center of the barrel. It's more the flats I'm concerned with. Maybe I'll give Manson Reamers a call.
My 11 degree cutter would remove the recess of the muzzle and it would end up being like this:
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I like the look of the 11 degree crown but I've never done one. I know my gunsmith buddy does a lot of them.
Those little dings aren't going to have any effect. It is purely cosmetic that far away from the bore.
Agreed. Those blemishes on the edge won’t affect anything. My barrel had no crown at all. Just a burr from where the target recess was machined.
Anyone think a 8.6 Blk cross would be a good hog hunting setup? A 12 inch barrel should lighten it up and put a bunch of energy downrange. Also having the option of subsonic rounds could be another option. Thoughts?
you going to be the first person to SBR a Sig Cross?
I dont like the idea of projectile prices and a special can just for a short range round. Hard pass on the hype.
Special can? Seems like there's a ton of 35 cans out now and you can get a MG7k 338 for $500 msrp
So I guess this is a warning for potential Cross buyers.
I received the rifle back from Sig. They aligned the handguard, but the misalignment of the scope interface to my zero is still way off. Sig CS communicated that it was “acceptable.”When asked to define acceptable, the answer was lacking as they only mentioned a Sig Tango 6 was able to zero the rifle at 25 yds. No info was given on the amount of windage left and right. I’m assuming their Tango 6 is a 34mm tube. My EOTECH Vudu could zero too but was grossly off center.
After receiving the rifle back and using a vortex LHT 4.5-22 and a LHT 3-15, I have .6 mils of travel right (4.5-22) and .4 mils of travel to right with the (3-15). With the 4.5-22, this leaves 12.6 mils left for travel and more than that for the 3-15. This is still grossly out of alignment.
This measurement was achieved by using two different Seekins rings options. Using the same combination(s) on my Tikka T3, both scopes are almost dead center in their windage.
SIG’s repairs were able to gain me about .6 mils with aligning the handguard, which strengthens, for me, the case that the rail to barrel alignment interface is WAY OFF.
Not sure on my next step. I’ll recontact SIG, but I may have to settle for using a 35mm tube scope. I have a friend who just bought a CROSS, and he had similar issues with alignment. His rifle is not as bad as mine, but it was way off too. I’m curious if anyone else has issues.
I’m pretty diassapointed in SIG as I wrote a detailed letter explaining the issues. I would have liked to known their windage numbers before they sent it back to me as the whole point of this rifle was to use lighter 1” or 30mm scopes on a hunting rifle.
I should have bought another T3x in super light trim.
Blessings,
BC
I received the rifle back from Sig. They aligned the handguard, but the misalignment of the scope interface to my zero is still way off. Sig CS communicated that it was “acceptable.”When asked to define acceptable, the answer was lacking as they only mentioned a Sig Tango 6 was able to zero the rifle at 25 yds. No info was given on the amount of windage left and right. I’m assuming their Tango 6 is a 34mm tube. My EOTECH Vudu could zero too but was grossly off center.
After receiving the rifle back and using a vortex LHT 4.5-22 and a LHT 3-15, I have .6 mils of travel right (4.5-22) and .4 mils of travel to right with the (3-15). With the 4.5-22, this leaves 12.6 mils left for travel and more than that for the 3-15. This is still grossly out of alignment.
This measurement was achieved by using two different Seekins rings options. Using the same combination(s) on my Tikka T3, both scopes are almost dead center in their windage.
SIG’s repairs were able to gain me about .6 mils with aligning the handguard, which strengthens, for me, the case that the rail to barrel alignment interface is WAY OFF.
Not sure on my next step. I’ll recontact SIG, but I may have to settle for using a 35mm tube scope. I have a friend who just bought a CROSS, and he had similar issues with alignment. His rifle is not as bad as mine, but it was way off too. I’m curious if anyone else has issues.
I’m pretty diassapointed in SIG as I wrote a detailed letter explaining the issues. I would have liked to known their windage numbers before they sent it back to me as the whole point of this rifle was to use lighter 1” or 30mm scopes on a hunting rifle.
I should have bought another T3x in super light trim.
Blessings,
BC
Hello BELLYCRAWL
I have the same issue with my Sig Cross after zero @ 100 YRD
I only have 4.5 mil left windage usable
8 mill right windage usable almost complete turn of the turret
Using 34 mm scope Burris XTR ii
The same scope I removed from Ruger Precision Rifle was almost center for windage value L and R.
I send email to Sig and back and forth on the emails they want me to send it back but I am still against that.
Just to help you try this might work might not
Normally when we mount scope ring we always butt them FWD against the slots on the rail to prevent recoil moving the scope when all tightened up
Try to split the distance between the rail slots and have the rings cross pin or screw in the middle between 2 rail slots and see if you gain anything
Please all of you experts don’t hold that against me if I miss explained just trying to help based on a case I run to in the past
I run to a case on a different rifle and it worked perfect that rifle was very low recoil. Did not care much about replacing the rails Becuse it was not machined correct center
Regards
I have the same issue with my Sig Cross after zero @ 100 YRD
I only have 4.5 mil left windage usable
8 mill right windage usable almost complete turn of the turret
Using 34 mm scope Burris XTR ii
The same scope I removed from Ruger Precision Rifle was almost center for windage value L and R.
I send email to Sig and back and forth on the emails they want me to send it back but I am still against that.
Just to help you try this might work might not
Normally when we mount scope ring we always butt them FWD against the slots on the rail to prevent recoil moving the scope when all tightened up
Try to split the distance between the rail slots and have the rings cross pin or screw in the middle between 2 rail slots and see if you gain anything
Please all of you experts don’t hold that against me if I miss explained just trying to help based on a case I run to in the past
I run to a case on a different rifle and it worked perfect that rifle was very low recoil. Did not care much about replacing the rails Becuse it was not machined correct center
Regards
I'm really new to any longer range shooting. I didn't even bother to consider windage adjustment after sighting in.
It appears I may have similar problems though I'm not sure whether they are as drastic.
About 2 mil to the left
About 8 mil to the right
To be completely honest I've never adjusted for wind before so I don't know whether this adjustability is within a workable range or not.
It appears I may have similar problems though I'm not sure whether they are as drastic.
About 2 mil to the left
About 8 mil to the right
To be completely honest I've never adjusted for wind before so I don't know whether this adjustability is within a workable range or not.
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Would a receiver lapping tool for AR’s work on the cross?
What if the problem is with the rail and not whether the barrel is centered in the receiver?
It's controlled with a threaded barrel extension and nut so headspace can be set outside the factory relatively easily.
Cross carbon barrels.
schnees.com
CarbonSIX Products - Schnee
schnees.com I'm not familiar with this stuff so go easy.Cross carbon barrels.
CarbonSIX Products - Schnee
Is the intent behind a carbon sleeved barrel just weight savings? Is it significant?
Any downsides to them other than the $800 price tag?
