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Cleaning and abrasives and Fire Lapping

Frank Green
Here is another good one for ya....

Back when we did a ton of R&D barrels for Remington for the MSR rifles I get a phone call out of the blue from one of the engineers. They were down in TX doing testing. Also had military guys there from what I remember. Caliber was 338 Lapua if I remember correctly. Might have been 300wm. Anyways both guns are just being hammers with box ammo. Then he tells me... the next day one of the guns just quite shooting. I forget the distance but it was at long range. He said the day before the gun was shooting .7moa or better with box ammo and the next day rounds wouldn't even hit paper. Wild shots going every where! Low round count on the barrel as well. I said, The gun just doesn't quit shooting like that. Some body did something somewhere. I asked the normal questions... same lot of ammo, scope issues, was it cleaned and what and how etc... he said the gun wasn't in they're control/possession the whole time. I said... better start asking questions and digging into it. The other rifle was still pounding nice small groups.

Turned out someone ended up fire lapping the barrel on that one gun! Here's your sign!
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Cleaning and abrasives and Fire Lapping

Frank Green
MikeMiller said:
I found your barrels in 308 shoot that long between cleanings before accuracy starts to suffer. The cleaning regiment depends on rds to be shot the next day plus when shooting team sometimes we would double up on the “hot rifle “ if another rifle failed or quit shooting well. Heck TSA broke more than one of our team rifles over the years

Now when we were shooting Savage barrels I found I needed twenty rds to settle in if completely clean. Can’t always shoot twenty rds before going for record

I prefer to go 100-150 between cleanings but sometimes just get stuck going longer. They are always cleaned and oiled before stored

Hope that explains it
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I'm with ya bud and understand!

Yes I've been at matches and loaned my rifle when a guy had issues with his. Mechanical issues or scope going sour etc...
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SOLD Iray Mate MAH50R - LRF and onboard ballistics Clip-On

Patty
I am selling a predator rifle of mine but willing to separate the thermal/optics from the sale... see the thread below if you'd like to view the entire package..
www.snipershide.com

Firearms - Defiance ANTI-X MDT CRBN Proof carbon 6.5 creed w/ thermal clip on

Rifle Specs are as follows... The rifle can be purchased as a whole with the Optic and Thermal for 9300 or the rifle with no optic/thermal for 3650. No Supressor Defiance Anti-x SA, Nitrided by SAC. 20" Proof Carbon Barrel - shoots 100gr ELD VT in knots at 3250fps MDT CRBN Stock MDT Precision...
www.snipershide.com www.snipershide.com

Iray Mate MAH50R, like new condition, its been out twice.
This model has an upgraded sensor. on board ballistics and a built in LRF, compared to the normal iray mate, it works very well.

It will come with a 300$ Rusan QD mount for the optic and a 200$ ADM QD Pic mount

$3999

Message me if you'd like a video of the clip on functioning/ranging and engaging targets at distance.

F&F Payments only. no trades.
I take Venmo, Zelle, and apple pay.

IMG_5999.jpeg
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Rifle Scopes Scope mount suggestions? (Seeking vs Badger vs Area 419)

TurdFerguson
Looking at a new mount for an older #6 screwed 700 in 243. Rifle will be a beater for hunting.
Which of these has the most surface area to receiver?
Area 419
Badger Ordinance
Seekins Precision
Others?

Nightforce excluded due to lugged model only being available for #8 screws.

Scope will be an oldish night force 2.5-10 NXS in either Leopold mk4, badger, or night force low rings .
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Firearms Defiance ANTI MDT CRBN Proof carbon 6.5 creed w/ thermal clip on

Patty
Rifle Specs are as follows...

The rifle can be purchased as a whole with the Optic for $5450

or the rifle with no optic for $3650.

No Supressor, no thermal.

  • Defiance Anti SA, Nitrided by SAC.
  • 20" Proof Carbon Barrel - shoots 100gr ELD VT in knots at 3250fps
  • MDT CRBN Stock
  • MDT Precision bottom Metal
  • Bix n Andy Tac Sport Pro 2 stage trigger
  • Leupold Mk5 3.6-18 Illuminated TMR
  • MDT Elite rings 1.5"
  • Iray Mate Mah50R Thermal Clip on this model has a built in LRF and on-board ballistics. it will come with a RUSAN QD scope mount and an ADM pic mount. The clip on is sold
F&F Payments only
i take Venmo, Zelle, Apple Pay
IMG_5999.jpeg
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Texas hogs from field to table

XP1K
BurtG said:
Mind boggling to me why to Fudds and twig pigs , some animals it’s wanton waste to not consume. And it’s “unethical” to shoot them from far away.

But other animals it’s a ok to leave rotting on the ground , gut shoot , shoot from too far away etc.




Also retarted when any bow hunter starts talking about it being unethical to shoot something from far away. Those guys maim and wound more animals than anyone
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I know several people who will just gut shoot pigs and let them run off. I can't do it myself. Letting them lay is one thing. Letting them suffer their final moments is something totally different.

I did find this kind of humorous though. I used to work for a local rancher that favored a 220 swift, and was quite deadly with it. If ever he saw a big boar hog he didn't feel like harvesting, he'd wait for a good broadside shot where you could see the pigs nuts and he'd send a 50gr speer soft point right through both balls. I've never seen a pig run so fast.
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FN SCAR IS DEAD; LONG LIVE THE SCAR! US and Belgium Production is over.

Watch_this71
roostercogburn98 said:
I’ve got a love hate relationship with the Scar. I acquired one in 2008/09 early in the release to the civy market, when FN said “once the military adopts it, we are stopping sales to the public”. Or that was my understanding of it. This one is serial number 592, and it sat in the safe for 4 or 5 years unfired. I got tired of sitting on it and shot about 500 rounds through it, and it has pretty much sat for the rest of time I’ve had it. I still have all the original shipped items and box for this thing. View attachment 8788738View attachment 8788739View attachment 8788740
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That's the story with my Tavor SAR (super low double digit serial number). I can go rub it in my significant other's face that I'm NOT the only one that did that on a gun that I don't shoot.
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Barrel Torque Ludicrocity

A
Kiba said:
Interesting, +0.004" over print dimension is certainly enough to cause an issue with a prefit and I don't blame you for not wanting to do prefits for them anymore... Nobody likes dealing with returns and reworks when it could have been avoided.

I'm sure you've measured a much larger sample size of ARC actions than I have, but between 9 ARC actions of 3 different models that share an identical tenon print that I've measured, they've all measured well within the print tolerance, and all 9 actions measured within a total span of 0.0012" even when swapping bolt heads around between all the actions.

The 9 I've measured were certainly good enough for prefits but like any chamber job regardless of action brand, if you want to hit an exact headspace dimension you either need the action in hand or accurate action face to bolt face measurements.

If I'm ordering a custom prefit, even for an action that supposedly guarantees an action face to bolt face dimension within +/- 0.001" according to the manufacturers print, I always provide the smith with a measurement from the action face to the bolt face taken with a calibrated depth mic measured multiple times in multiple spots on the bolt face on my action that the barrel will be going on. Doing this I've yet to find any out of spec dimensional surprises regardless of brand, but I'm sure you've measured many more actions than I have and can note trends and deviations by manufacturer.

If the smith knows what they're doing and I provide that action to bolt face dimension along with a headspace gauge or a couple of pieces of sized brass and tell them "please headspace to this provided gauge/brass +0.001" using this provided action measurement" they can usually hit the desired headspace dimension within a couple of tenths.

Of course, for the best tenon thread fit the smith needs the action in hand, but that's not always convenient if you're still shooting out the current barrel and don't want any down time.
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Yeah, I'm not sure whats going on with ARC.

I thought it may have been a singleton error......it happens. But how their "tech expert" handled it when we called was pretty terrible. Long story short......I cut the barrel to their HS measurement of .822 +/- .001".....barrel measures .8215ish.......action measures .826ish......ARC expert said "Although that's on the extreme end, that's within safe acceptable HS range for 300 Norma" there wasn't any hint of "Wow our action HS is way off the norm".

Then I get another CDG order that is a switch barrel setup 6ARC and 308......both bolt heads measure about +.004 over their prefit spec sheet.

Either update your documentation for your new standard.......or are you throwing darts in the dark?

So forgive me if I'm a little jaded when I hear someone rave about the excellence of said company and their products.

Ern
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