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Accuracy International AT-X
- Thread starter Peter Laurvick
- Start date
Federal won’t give a shit most likely.
A bit more comparing it looks like the Federal brass is about .001” shorter on some pieces than Hornady. My Fired Hornady cases expanded only .004”. Same story for the Berger I shot in Lapua brass.
As a precaution I pulled the barrel, removed the top bridge to expose the front of the receiver and threads. I then thoroughly scrubbed the barrel shoulder, barrel tenon threads, receiver face, and the threaded portion of the receiver that accepts the barrel. I had recently had the barrel off to install the top bridge (which I just now discovered is not necessary) so there’s a possibility that some bit of debris was interfering with those mating surfaces. I then reinstalled everything and used a wrench to ever so slightly snug up the barrel into the receiver so headspace is biased towards being more minimum than maximum.
I will now torque the barrel lock nut to 55in-lbs, and reinstall the top bridge and torque those fasteners to spec.
A bit more comparing it looks like the Federal brass is about .001” shorter on some pieces than Hornady. My Fired Hornady cases expanded only .004”. Same story for the Berger I shot in Lapua brass.
As a precaution I pulled the barrel, removed the top bridge to expose the front of the receiver and threads. I then thoroughly scrubbed the barrel shoulder, barrel tenon threads, receiver face, and the threaded portion of the receiver that accepts the barrel. I had recently had the barrel off to install the top bridge (which I just now discovered is not necessary) so there’s a possibility that some bit of debris was interfering with those mating surfaces. I then reinstalled everything and used a wrench to ever so slightly snug up the barrel into the receiver so headspace is biased towards being more minimum than maximum.
I will now torque the barrel lock nut to 55in-lbs, and reinstall the top bridge and torque those fasteners to spec.
Also federal is soft brass. Hornady isn’t a ton better. So factory ammo loaded hot or close to the lands could have some effect.
Also remember you’re part of the #12lbsboltliftgang with that ATX. So maybe the hornady is just fine
This rifle loves Hornady ammo for some reason. Berger factory ammo is OK, everything is sub minute, but this particular Bartlein LOVES ELD-M’s.
The Federal stuff shot reasonably well for hunting ammo just seems like it might be loaded on the spicy side. Which probably means it should be running large rifle primers. That said I torched of 3 rounds of 129gr Hornady SST “Superformance” and it shot better than the fancy pants Federal stuff, and showed no signs of pressure or primer issues.
I guess I should be happy it likes the cheapest readily available component match bullets and loaded match ammo out there. Like a pretty girl that would rather drink Coors Banquet than Champagne.
The Federal stuff shot reasonably well for hunting ammo just seems like it might be loaded on the spicy side. Which probably means it should be running large rifle primers. That said I torched of 3 rounds of 129gr Hornady SST “Superformance” and it shot better than the fancy pants Federal stuff, and showed no signs of pressure or primer issues.
I guess I should be happy it likes the cheapest readily available component match bullets and loaded match ammo out there. Like a pretty girl that would rather drink Coors Banquet than Champagne.
I am starting my load development with Hornady 140gr ELD-M seated to factory ammo depth. Might just be the easy button.
@RUN8 did the boltface or firing pin get etched? Was there evidence on any of the spent cases of leakage around the primer, or piercing? If factory ammo were etching AI parts, I'd be very vocal with the ammo manufacturer.
If the Federal ammo is leaking or setting the primer back it is worth calling them in the event there is a bad lot out there. Hopefully you still have the offending box with the lot number.
I don't see any recall info on the Federal website. That might just be my web surfing skills.
If the Federal ammo is leaking or setting the primer back it is worth calling them in the event there is a bad lot out there. Hopefully you still have the offending box with the lot number.
I don't see any recall info on the Federal website. That might just be my web surfing skills.
Still have the box and the remaining 16 rounds, I had fired a single round of it back in November at a steel target using the same elevation as some Berger 144gr and it hit to the same POI as the Berger at 523 yards oddly enough.
I see no evidence of bolt face or firing pin etching, just a bit of carbon on the firing pin tip and I noticed a bit of smoke at the rear of the bolt where the firing pin tail protrudes from the bolt shroud. Otherwise I wouldn't have paid much attention to it.
I did leave Federal a report with pertinent details. The lot number of my box is B046U18 in case anyone else has any on hand to be on the lookout for.
I see no evidence of bolt face or firing pin etching, just a bit of carbon on the firing pin tip and I noticed a bit of smoke at the rear of the bolt where the firing pin tail protrudes from the bolt shroud. Otherwise I wouldn't have paid much attention to it.
I did leave Federal a report with pertinent details. The lot number of my box is B046U18 in case anyone else has any on hand to be on the lookout for.
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What’s a more likely scenario is cold weather causing lube in the ignition system to thicken up and create more drag, robbing energy transfer to the primer cup.
Key word was rumor. Was going around a while back. Guys were swapping to small rifle magnum primers
I'm only in to ask if people have had problems with factory 6.5x47 Lapua. I don't think it has ever been sold as anything but small rifle primer.
I have both large and small rifle primer brass for my 6.5 CM and 6XC, never have bought any srp 308 brass. But, that's more of a hedge against primer availability than anything else. I don't load high enough to need srp.
What did they charge for that? I'm in the north but nice to know about places to go. Did you do all the disassembly? Turned out slick
I haven’t read about any primer issues with 6.5X47 Lapua.
From what I hear it is the proverbial “easy button” of 6.5mm cartridges to load for and achieve single digit SD’s.
It’s a well designed cartridge with the huge advantage of only being available in top quality brass, and that is going to help a lot.
Yeah but it has a folder. Based on new pricing, that’s a $1000 upgrade at least…
Says the dude that was wanting to sell an LWTS-LR for $10k when it wasn’t even worth over $8k.
Why’d you delete that thread? My half eaten bag of lays wasn’t good enough for ya?
@Huskydriver
I traded it for a Utc-x.
So
We all have our own opinions of price.
But comparing a Lwts lr that msrp for $25000 and was fire saled by dealers for no less than $14000. And I listed for $10000
Is slightly different than listed a $5250 msrp rifle that fire saled for what $4250. For $4250. Minus the $120 mag and $6-900 barrel but adding a $250 hinge.
Yeah totally comparable
So I’m the angry one cause I’m clapping back?
Find me the fire sale… I’ll wait.
Dudes were dumping AT-X for dirt cheap cause of EO’s and MH’s prices. Now they’re gone.
Everyone is crying about that $6.5k pricing on AT-XC.
But I’m smoking crack for my listing? You’re comical
There’s another AT-X with all the bells and whistles for $6k if it’ll make you feel better.
I am not sure which AI you are using but this happens to me all of the time in the AXMC which has a LFP. I don't use terminal ascent but use the FGMM with the Berger 130-grain bullet. Primers are badly cratered. Sometimes they are even damaged to the point where fragments end up preventing the firing pin from working. I have to take the firing pin out and dump the fragments out of the bolt body. It also coats the spring with all sorts of gunk that requires a thorough scrubbing to remove the residue. Norma 6.5 with large rifle primers is even worse than the Federal. I want to try the Berger-loaded ammo since it uses an LRP to see if that works without issue.
I have stopped using Federal and Norma in the AXMC. Like you, I am thankful that the AXMC does not exhibit this issue with Hornady and like you the groups are great so I just use that. My AT which has an SFP does not have these issues so I run the Federal in that.
I shoot it, and it works great out of the AT-X. Super easy. Feeds great and low recoil for a 6.5
Yep, 6.5x47L is by far one of my favorite cartridges. I just don't have a barrel for it yet for my AT-X.
Not sure if y’all talked about this already but I’ll just leave it here.
Europtic has border-patrol length AICS, or was I hallucinating LOL
for those of you with any interest in short barrels, any interest?
Cool to see them finally in the field if thats legit.
Tikka stuff...better late than never I guess.
for those of you with any interest in short barrels, any interest?
Cool to see them finally in the field if thats legit.
Tikka stuff...better late than never I guess.
The only "Border Patrol" spec is the actual rifle itself with the short forend. The short forend AICS chassis has been out for quite some time now. It was designed mainly for rimfire rifles with shorter barrels.
But, LE prefers shorter forend for short barrels with suppressors. We've been using the short AICS for several department builds.
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Got my hinge and taller mount. Now if the ATF would get moving on my can I'd be set.
5.2oz for us knuckledraggers in the imperial system, fn apes!
