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New Sig CROSS

Since no one that I am aware of currently makes an aftermarket bag rider for this rifle. I decided to model up a prototype in solidworks and 3D print one. It bolted right up using the stock screws and worked flawless. Clearance for the screw heads was a bit tight with my printer but not bad. Might make a few small tweaks in the near future, but its made form standard PLA and is very light if thats a concern. Very sold with full infill in the print. If anyone would like the .STL file to print on their own I would be happy to send.

Would love the File also.

Over here in germany i am still waiting for the cross to ship.
put the order in firstplace in nov 20, gossip has it, that the sept. 21 production might be going to germany... :) add some paperwork and pressure checks to it - i hope seeing her around end of nov.
by the way, did the FLC Camo ship in the states? i think i only saw blacks on user photos...

Up until then i am stuck with just reading your great info here. ;-)
 
Scrounging around the shop I found an AR10 Bartlein 6.5 barrel left over from a project. Turned the breech down, shortened it up a bit. Finish length ended up 18 1/2". The AR barrel weighed a good bit less than the 3 lb. 18" factory barrel.
Should any/most ar10 barrel fit with this action? If that's the case I would start to think of getting one in carbon fiber! Thanks
 
Since no one that I am aware of currently makes an aftermarket bag rider for this rifle. I decided to model up a prototype in solidworks and 3D print one. It bolted right up using the stock screws and worked flawless. Clearance for the screw heads was a bit tight with my printer but not bad. Might make a few small tweaks in the near future, but its made form standard PLA and is very light if thats a concern. Very sold with full infill in the print. If anyone would like the .STL file to print on their own I would be happy to send.

View attachment 7656445

View attachment 7656447

Would you mind sharing a .sldprt file? I wouldn't mind grabbing a chunk of delrin and machining one, and why design my own if I can be lazy and use your file? :LOL: Thanks!
 
So disappointed... Mounted a Bushnell Forge on a 20 moa mount and it was too much for the scope to compensate for. Doesnt make sense to me as the same setup was on another rifle with no issues. Its about 4 mils away from dialing down to be on target.
The good part of the rifle so far is the speed I am getting.
178 HPBT are hitting 2600 with zero issues using IMR 4064.
 
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That does seem amiss, it should be able to compensate for only 20MOA (~6 mils), the 4.5-27 says it has +/- 30 MOA (~9 mils) adjustment, especially if you are still ~14 MOA (4mils) off. Sure something isn't wacky with the rail/rings/receiver? Sometimes the scope specs are a bit optimistic but you're still way off, almost half the listed adjustment range off.

If this is a new gun, it possible SIG switched to a 20 MOA rail so you are effectively getting 40 MOA? Sig loves to change stuff without telling anyone.
 
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I mounted a NF ATACR 4-16x42 using a NF 20MOA Unimount, and promptly ran out of elevation adjustment while trying to zero at 100m (it's about 0.6 mil high). It definitely seems that these things have shipped with a 20 MOA rail, and not the 0 MOA that I assumed.
 
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@Zuzudaddy I'd like the bag rider .stl if you don't mind, I find myself shooting this rifle the most of any of mine lately.

My hunting scope was suffering some mirage issues in the heat so I finally decided to move the Razor AMG over to my Cross for a while. I'm still happy with the rifle, I can't find any more Gold Dots, but did check some 129gr Interlock and 130gr TGK hunting loads at 200, here are the three that passed muster:

View attachment 7657740

I need some more StaBall to hit the market because I'm down to a pound and a half, and more bullet options seem to slowly be showing up in stock.
You prefer StaBall over other options?

PV has some right now
 
You prefer StaBall over other options?

PV has some right now

Thanks for the heads up, I picked up an 8 lb keg. I would say that I prefer RL16 in that burn speed, I've probably burned 12 lbs and love the velocity for pressure and stability, but I haven't been able to reliably get it for about a year, same with AR-Comp. Out of the options I can get, I like StaBall, it works well in my 6.5s, and in my .30-06.

The only thing I wonder about is velocity SD/ES, I've read some folks talk about the excellent velocity uniformity they get with StaBall, and others rant about the terrible SD/ES they get with StaBall. I've not usually read such divergent opinions on the same powder, so I'm not sure what the issue is. I've not experimented very much with gathering large samples of velocities since I'm somewhat short on projectiles.
 
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I think carbon barrel link is broken.

Carbon barrel discussion

Try that. The old link works for me if I "open in new tab" but not if I just click it. Think it has something to do with that being a tapatalk url which is a mobile app for forum browsing.

Anyway, not a whole ton of info there, but the OP has promised to keep it updated.

Edit:

So far what's been shared is:

These will come with a 1" or less guarantee. But should easily shoot 1/2" in the right hands.
Dropped from 6.8 to 6.6 pounds

6.5 & 6 creed, 243, 308, 22-250, 7mm-08 are on the hit list right now.. down the road, maybe some crazier stuff like a 7 SAUM or 338fed..

Price is a bit up in the air right now but looks like it would be $650-$750 somewhere

and...

What caliber, lenght, contour, etc would you be most interested in?

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Looks like they are accuracy guaranteed, shaving a little weight, plan to make lots of calibers/lengths, reasonably priced, and asking what the market wants. So far so good.
 
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Did some initial load development with my 6.5 using the 123 and 109 absolute hammer solids and IMR 4064. Looks like I have a node at 2880 with the 123s (40gr of IMR 4064) and a node at 3050 with the 109s (41.6 grains of IMR 4064). Gotta narrow in on those two spots and see how wide the nodes are and then I'll true the BC on both bullets.
 
What wrench are you guys using to remove the barrel? I was told an AR15 wrench but mine doesnt fit.

Just a standard AR barrel nut wrench, I think mine is a Magpul armorer's wrench.

*Edited to add that I only removed the nut to pull the barrel/barrel extension assembly out of the receiver, I didn't mess with the barrel nut that headspaces the extension to the barrel.
 
Sharing so no one else has this problem with their cross. I picked up a Sig Sierra6BDX 5-30 x56 scope nd was advised by Sig to use the Alpha 2 ring mount with a 20 MOA offset. I had it gunsmith mount it because i wanted it to be perfect but he mentioned that the gun will shoot 8 inches high at 100 yards with the vertical adjustment maxed out. This doesn't work because it would shoot out o like 300 yards before the radicle would pair up with the shot placement. The BDX should be zeroed at 100 or 200 yards IMO because this is going to be my hunting rifle. and need that close up option for hunting. Long story short... Sig is sending me the correct mount with no offset but this will cost me the gunsmith fee again. All good... live and learn but didn't want any of you to go through the same. ohh and for yall that think i am over scoped, I am... but i want to eventually use this rifle for with the 277 sig fury and also wanted to have the option to zoom way in for identification or glassing purposes.
20210730_171947.jpg

Cross 6.5, APA little bastard muzzle break, Tier-one Tactical Carbon Bipod from the UK
 
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Sharing so no one else has this problem with their cross. I picked up a Sig Sierra6BDX 5-30 x56 scope nd was advised by Sig to use the Alpha 2 ring mount with a 20mm offset. I had it gunsmith mount it because i wanted it to be perfect but he mentioned that the gun will shoot 8 inches high at 100 yards with the vertical adjustment maxed out. This doesn't work because it would shoot out o like 300 yards before the radicle would pair up with the shot placement. The BDX should be zeroed at 100 or 200 yards IMO because this is going to be my hunting rifle. and need that close up option for hunting. Long story short... Sig is sending me the correct mount with no offset but this will cost me the gunsmith fee again. All good... live and learn but didn't want any of you to go through the same. ohh and for yall that think i am over scoped, I am... but i want to eventually use this rifle for with the 277 sig fury and also wanted to have the option to zoom way in for identification or glassing purposes.View attachment 7680294
Cross 6.5, APA little bastard muzzle break, Tier-one Tactical Carbon Bipod from the UK
I'm a little confused by this post. Do you mean 20 MOA offset and not 20 mm? Also, why would the gun shoot 8inches high at 100 if you zero at 100?
 
I'm a little confused by this post. Do you mean 20 MOA offset and not 20 mm? Also, why would the gun shoot 8inches high at 100 if you zero at 100?
good catch.. Yes 20 MOA. i fixed it to reflect the edit. I could not get the radicle up high enough to match the bullet hole at 100. the scope was maxed out with no additional adjustment. Other words, it wont work for a 100 or a 200 yard zero.
 
good catch.. Yes 20 MOA. i fixed it to reflect the edit. I could not get the radicle up high enough to match the bullet hole at 100. the scope was maxed out with no additional adjustment. Other words, it wont work for a 100 or a 200 yard zero.
Does the sig cross's rail have 20 MOA built into it already? Something ain't right if you can't even zero at 200 yds without maxxing the adjustment.
 
Does the sig cross's rail have 20 MOA built into it already? Something ain't right if you can't even zero at 200 yds without maxxing the adjustment.
not sure if the rifle comes with the offset already. I agree. this scope should have enough adjustment to account for 20MOA but it didn't and the gunsmith confirmed it when he barrel sighted it.
 
just spoke to the gunsmith. He confirmed that the Cross already has a 20 MOA pic rail from the factory. It all makes sense now. FML
Interesting, because the cross is suppose to come with a 0 MOA rail. If you go to their web site, a 20 MOA rail isn’t listed as an available option yet.

I checked my rifle rail this morning and it does seem like there is a measurable bias in thickness. I was eye balling it with a pair of calipers.

I didn’t remove the scope or rail for the measurement. But yeah something like a .020” delta, depending on mount spacing that could translate to 20 MOA.
 
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I just pulled my rail and it is 100% a 20 MOA.
That explains my inability to zero when I put a 20 moa mount on it.
Also learned from this group, not all ar wrenches are even remotely the same. My Wheeler wrench is to shallow for the bolt nut on the sig. New one will be here Monday so I can re-torque mine in hopes of better groups.
 
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I just pulled my rail and it is 100% a 20 MOA.
That explains my inability to zero when I put a 20 moa mount on it.
Also learned from this group, not all ar wrenches are even remotely the same. My Wheeler wrench is to shallow for the bolt nut on the sig. New one will be here Monday so I can re-torque mine in hopes of better groups.
I find it odd that Sig doesn’t mention a 20 MOA rail in their specs. I went to their web site yesterday and under Q&A. Someone recently asked if a 20 MOA rail was available and CS replied not yet.

I didn’t notice the cross rail being different when I zeroed my scope. But I am pretty sure I read awhile back that it was suppose to come with a 0 MOA rail and assumed wrongly that it did.

So the 20 MOA rail is good news, I have a Vortex HD LHT 3-15x42 on it. It has 17.2 mils of elevation with a 100 yard zero. So that should be enough for about 1400 yards. I didn’t add the zero stop, because it limits you to 11 mils of elevation.
 
I find it odd that Sig doesn’t mention a 20 MOA rail in their specs. I went to their web site yesterday and under Q&A. Someone recently asked if a 20 MOA rail was available and CS replied not yet.

I didn’t notice the cross rail being different when I zeroed my scope. But I am pretty sure I read awhile back that it was suppose to come with a 0 MOA rail and assumed wrongly that it did.

So the 20 MOA rail is good news, I have a Vortex HD LHT 3-15x42 on it. It has 17.2 mils of elevation with a 100 yard zero. So that should be enough for about 1400 yards. I didn’t add the zero stop, because it limits you to 11 mils of elevation.
I find it odd as well. Sig is new to me but I keep hearing about how we are now their test subjects. I tried to into account the make of the receiver and the thickness of the rail at several locations when I measured it. I alo had my rifle completely level. When I put it all back together and put a bubble on the rail, it was not straight/level, but did imdeed take a dive to the front. At least I have a nice 20 MOA rail in reserve now...
 
I find it odd that Sig doesn’t mention a 20 MOA rail in their specs. I went to their web site yesterday and under Q&A. Someone recently asked if a 20 MOA rail was available and CS replied not yet.

I didn’t notice the cross rail being different when I zeroed my scope. But I am pretty sure I read awhile back that it was suppose to come with a 0 MOA rail and assumed wrongly that it did.

So the 20 MOA rail is good news, I have a Vortex HD LHT 3-15x42 on it. It has 17.2 mils of elevation with a 100 yard zero. So that should be enough for about 1400 yards. I didn’t add the zero stop, because it limits you to 11 mils of elevation.

When it came up in this thread I asked Sig on the Cross product page and they've yet to respond or post my question.

Got Zuzudaddy's bag rider design and milled one out of delrin:


vu6axAp.jpg

dVJzrAb.jpg

EXD1WMk.jpg
 
Glad it worked out for you, nice job!

Thanks! And thanks again for sharing your design, it's always nice to piggy back someone else's R&D for projects like these. I was a couple drinks into the evening and in a "down and dirty" mindset when I decided it was time to get to chopping up my delrin, left a little to be desired with surface finish and a couple other nit-picky type items I'm going to address on the next one.
 
Update on schnees barrels


The first barrel order is in and it looks like they will be 2.5 months or so. Could be a bit faster. Here is what we are getting on the first batch. If you see one you want, shoot me an email and you can reserve it.

Pricing - All barrels will be $799 and come threaded, regardless of contour, length, etc..

Installation - Because SIG is unwilling to release some barrel extensions, you will re-use the extension off your current (OEM) barrel. They are very easy to remove and you can probably do it at home but any gunsmith should be able to do it in about 5 minutes or less. Then it's just a matter of installing the extension on the new barrel, installing back onto the rifle (also very easy) and checking headspace. Should really take 20min or less really.


If there is a specific barrel you'd like to order, we can get that going as well.

3 x 6.5 Creedmoor - 20” - 7.5” Twist - Sendero
2 x 6mm Creedmoor-20”-8” Twist - Sendero
2 x 308 Win - 20” - 10” Twist - Sendero
2 x 7mm-08 - 20” - 9” Twist - Lite
1 x 338 Federal - 18” - 10” Twist - Sendero

(yeah, we're going to try the 338Fed in this thing...should be an elk hammer)

[email protected]
 
Alright guys, the itch to modify/improve/change is becoming overwhelming. I have access to CNC machines and materials and I like to think I design pretty nice looking parts. Problem is, the Cross just doesn't need much! I was thinking extended throw safety levers would be nice...I've seen them referred to as "AR-style" but I'm assuming something is different. Anyone tried a safety swap?