Over pressure with factory ammo

[snoodcrusher]

I just picked up a Rem 700 CDL stainless/ fluted Ltd. in 260 Rem. (man. 2008). I bore sighted the scope and used Fed Prem 120 gr Ballistic Tip factory ammo to get a 100 yd zero. I got sticky bolt lift and shinny ejector moons on the bottom of the cases. This same ammo shows no pressure issues in my Tikka T3 260. I load my own ammo but figured I'd use factory stuff to get it close at 100 yds. What could've been the most likely cause of the high pressure issues in the 700? Thanks guys!


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[OU812]

I'm sure you did this but I'll ask all the same. Did you clean the chamber and barrel before firing? Possible residue/oil in the chamber can cause this.

 

[snoodcrusher]

Yes. I always give a gun the once over before shooting. Just shot it again with hand loads 2-1/2 gr. below Sierra's listed max. Same thing. Sticky bolt and shinny moon mark from ejector on bottom of case.


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[Ridgerunner665]

Try another brand/batch of ammo... If the same happens with that, send the rifle back to Remington.

It may take sending it back more than once...... I've had this issue, with 2 different rifles.

 

[Tjay]

Sounds like a tight chamber or bore. Have you shot them over a chrono? If it were mine I would load some at a starting load and shoot over chrono to see/compare speeds with book speeds. You could also have a gunsmith do a chamber cast and slug bore to see what they are and proceed from there.

 

[snoodcrusher]

Thanks for the input guys


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[snoodcrusher]

Have used Nosler and Federal brass. Fed., Win., and CCI primers. Tried 120 Ballistic Tips, 120 A max, and 142 SMKs. My loads and Fed Prem factory loads, same result.
I got this rifle from a guy who bought it new but never shot it. I have the box and know the owner of store and employee who sold it to him. The guy is honest and legit. I'm just disappointed that the rifle has issues as its a rifle and clambering I've been looking for. Throat is a good bit longer than my Tikka .260 Rem.


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[snoodcrusher]

I have deemed the rifle as unsafe. I will not shoot it again until issue is addressed.


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[Ridgerunner665]

2008 was a terrible year for Remington products...

 

[Guy Miner]

Yes, I've run into over-pressure with factory ammo before - but it was an issue with the Winchester factory .308 match ammo...

That stuff was HOT in every rifle we tried. Everything else, factory or handloads worked fine - but your problem sounds more like a tight chamber... Probably.

Guy

 

[Vince]

Sounds like the same issue I'm having with my Savage 6.5x284.

I'll send it back to Savage or put a new barrel on.

Vince

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[super-7]

I may be late to the race here once again , but I'd suggest running a couple of your hand loads and 1 factory round over a chrony. It may be a tight chambered ,tight throat , causing pre mature pressure rises but if intended velocity is there you still have something to work with.
I ran into an older (70's) model 70 in 270 win with bolt lift issues with Hornady superformance 130 gr. , also tight bolt and ejector marks with Fedral 140 gr fusion.
Shot 130 gr power points alright and a light starting load for my buddy's kids rifle alright.
Chronod the win PP , near 3100 . The Hornady 3300.
It was just a tight chambered rifle , he's using 110 gr tsx with a mild load of 4350 and getting good accuracy and no bolt lift troubles now that he is aware of the issue.

 

[Gunner46]

Hate to say this, I truly do, but from a lot of chat, on many forums, I have gathered that Remington's QA has, shall we say, "slipped" to the point that I cannot justify paying my $$$$ for a suspect product (includes Marlin, now that Rem. bought them too). I have 2 in the safe, so I'm not bashing their past rep, just reflecting current chatter.

If they don't make it right, the 1st time, dump it and run. You're safety is worth more than some Corp's BS attempt to save a buck.

An Out of Box rifle should shoot factory ammo without concern.... PERIOD.

 

[snoodcrusher]

Update:: I super cleaned the chamber, throat and lug recess. I tore the bolt down, cleaned, degreased, and re- lubed appropriate parts. Found that front action screw was too long and contacting underside of bolt head when in the lock position. I installed a washer front and rear to shim the trigger guard / floor plate assembly in essence keeping the action screw from touching bolt. Fired a round of factory ammo and a starting load that I loaded myself. Same issues only stickier bolt lift.


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[snoodcrusher]

Extractor appears to be working just fine. It moves as it should and when compressed, it is flush with bolt face. The fired brass has the ejector mark and the base of the case is distorted, it rocks when placed on a flat surface, it's no longer flat itself.


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[super-7]

Well it looks like you have a canadite for an AI or a different cal.
Take it to a reputable smith have him true the action , hone the bolt lugs, and recut the chamber to 260AI, -7-08 , 308. Or something along those lines. If you go the AI route he will have set the barrel back after reaming the chamber/ throat.
You should probly have the barrel slugged before proceeding with any of the above, just to eliminate any unforeseen barrel issues.

 

[khh]

I had a friend that had a Savage 270 WSM just after the 270 WSM was released . From day one exhibited pressure with Factory loads and handloads , even starting loads . He sent it back to Savage they claimed rough chamber and returned it . Same thing , pressure. While trying 130 gr. TSX I tried the load Barnes suggested for a starter and stuck the bolt so bad I broke the extractor trying to get the bolt opened . At that point I was sure the barrel was under size . We contacted Savage they said you shouldn't be handloading yada yada yada and kinda balked at taking it back to look at. My friend told the he was documenting the conversation and was going to sell the rifle and that if someone got hurt he'd have documentation . Shazzam then they wanted to see it . One barrel later , boy is it a shooter , and no pressure either. That may be what your into. What were the circumstances of you acquiring it? My policy has been to buy a gun if I can't get it to shoot to my expectations it goes down the road.

In the late 80's I had a beautiful 700 Remington mountain rifle in 25-06 that grouped 2.5 inches or so @ 100 yards no matter what I did that was about as good as it got . It also , with factory ammo , and reloads would occasionally pop the head off a case . I had to carry a cleaning rod with a brass brush to remove the broken cases. I contacted Remington they said send them my credit card # and the rifle and they would look at it but 2.5 inches was "acceptable" accuracy . I wouldn't drag a gun up a mountain that wouldn't shoot WAY better than that. Any how the end result is some else owns a really crappy shooting 25-06 that pops the head of a case every now and then. I said all that to say maybe there is a reason your gun was for sale.

 

[snoodcrusher]

Update: My brother checked the headspace and determined that the rifle has a tight chamber. The head space was on the minimal side. He adjusted my sizing die to set the shoulder back a couple thousands. He just put another 1/4th turn into the sizer die to fix the problem. I can now feel the extra pressure when the press cams over, it requires more force now when checking it against the shell holder. It has fired and cycled 9 rounds without issue since this adjustment. No over pressure signs on brass either. I'm gonna shoot it at 100 yds today. The gun has already printed sub 1/2" groups before the problem was addressed. I'm hoping for the best.


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[snoodcrusher]

The middle group was shot with the Rem 700 260 Rem I was having issues with. Die adjustment to set the shoulder back has remedied the problem. It appears that it may have some accuracy potential for a sporter weight non-custom rifle. Shot about as good as the 2 Tikka rifles above and below.


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