btt

That’s an awesome deer rifle for Ohio! I’ve killed several with mine. Glws

We just lost this guy last night due to Hemangiosarcoma. Just last week we took him into get checked out for not feeling very good. Vet said it was either cancer or a tick bourne illness. We fed him steriods and antibiotics for 4 days hoping for tick bourne, things seemed to be getting better; he was eating, running around, generally happy. It fell apart at about 9 last night. It only took a couple hours before it took his life. Fuck Cancer.

yea,bet that put more pressure on Putin to get busy. he is no more interested in a nuc war than i am. problem is many of our neocons think one would be winnable and profitable.

theLBC said:

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depressing. you can't do anything to back these people out of their delusions. results of a long term well executed brain washing op. the only good thing is that most of them won't survive if the deluded outcomes they seek come to pass. they will quickly become expendable. actually same,same for the deep state neocons.

When discussing prices, I would also keep in mind that the aggregate inflation in the last five years is at around 30%. Between that and the tariffs, manufacturers absorbed some of that and passed some to the consumer. Either way, seeing discounts quite that deep on imported products is not particularly likely.
That gives an opening for companies like Burris/Steiner and Leupold to capture quite a bit of market share since they add a lot more value in their US assembly plants.
Whether they will or not is an open question, but the opportunity is there.

ILya

AccuSol-ERN said:

I would love to get the action makers response to some of the large torque numbers suggested.

Ern

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They won't suggest torque that high as I'm sure they want to avoid their phones blowing up with people asking to return/exchange their damaged or marred up actions and barrels after trying to get things that tight with the incorrect tooling for the job, lol


Just some quick math here since I have a few free minutes and I'm bored...

Typical barrel material is 416 stainless, so assume fully annealed condition for the lowest possible yield strength, that's 40ksi.

Let's go with 1.0625-20 diameter tenon threads. Mean pitch diameter for 1.0625-20 is 1.0275".

Target 75% of the 40ksi yield strength for the tensile load on the threaded joint so you're still safely in the zone of good preload but only elastically deforming the threads and not yielding the material, that works out to 24875 lbs desired tensile load with the 1.0275" mean pitch diameter.

Using a K factor of 0.12 for lubricated fine pitch threads, 1.0275 mean pitch diameter, and a target tensile load of 75% of the 40ksi yield strength with a 1.0275 mean pitch diameter for a desired 24875 lb of preload, plug it into T = KDF and that is suggesting a 256 ft/lb torque to achieve 75% of 40ksi yield strength of annealed 416 stainless with 1-1/16" 20 lubricated fine threads.

The math doesn't care what the use case is for the threads, it only cares about the desired preload and material, frictional, and dimensional properties of the threaded joint. (Keep in mind the specific use case may allow a lower amount of preload, or require a higher amount of preload... that's a different subject.)

Again, 100-150 ft-lb is rather low in regards to torque for threads the size of a typical barrel tenon even assuming a fully annealed 416 stainless barrel with threads slathered in anti-seize. At 100-150 ft/lbs things are still well under the yield strength of annealed 416 stainless and you are not going to hurt the threads in the action or barrel going that tight, and if anything, it might not be enough preload in the joint for maximum cold bore / zero stability in all use conditions.

As far as what is appropriate torque as far as what you consider to be "tight enough" for repeatable accuracy and what your workholding and fixturing is capable of handling without slipping/gouging/marring/breaking anything, that's up to you. I shoot for 125 ft-lb on my own stuff as much tighter than that the barrels can be a pain in the ass to pop free after being installed for a while; I'd rather not mar up the external surfaces or twist or damage the action/raceways/lugs with an internal action wrench. 125 ft-lb is what I consider the "reasonable" number for my tooling and fixturing, but if I had tooling that would handle 200-300 ft-lb without any worries about marring or damaging the action or barrel that's the range I would be more satisfied using based on the thread diameter and material properties involved.

Better yet would be to use the lowest torque that the data says is needed to minimize or eliminate cold bore POI deviation and POI deviation after a significant impact event on the barrel, but I do not have adequate test data to make that determination.

Disclaimer: I did the above calcs quickly on my phone and may have messed up, so keep that in mind, lol. However, for a rough sanity check of my math, looking up suggested torque charts for an M27 fine thread bolt (M27 = 1.063", so very close to my example) in grade 4.6 (4.6 = 400 MPA tensile strength, 0.6 * 400 = 240 MPA yield strength, and 240 MPA = 34.8ksi yield strength, so weaker but somewhat close to the 40ksi of annealed 416 stainless I used) shows a suggested lubricated torque value of 360 Nm / 250 ft-lbs on several bolt manufacturers data charts.

btt

btt

Sorry it’s gone.

6.5SH said:

Try some hot glue for a DIY accuwedge

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Don't think it's going to reduce group sizes as much as you want, but it does eliminate the slop fit to the lower.

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Yup, hot glue is awesome.

Expert684 said:

ANTIFA special forces. The man bun and the pudgy whatever gives them away. I guess not too funny considering they are retards.

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shoot them 1st. teach them the open carry down side. it is remarkable that this flew with no cops or arrest. commie state/city i guess? got more guns than the whole J6 crowd.

Yeah would like to hear that too as the Seekins in my pic is very solid and rigid and not sure how you would get more than it.

Ronin22 said:

This thread has an interesting data set from 40-800ftlbs.

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Exactly lmfao go closer to 800 I'll be happier,)

Mike R

yea,the coming collapse that many of us anticipate for any # of reasons is not survivable for most. my guess is that anyone > 50 is done unless they have an established,dedicated,well equipped support structure. that is not a long list. depends on the type of collapse. my bet is after 1 year there will be at most 100 mil people alive. "mad Max" and a "a boy and his dog" will look like luxury vacations.

flogxal said:

You're welcome, GRT is a pretty nice tool. Some folks may like quickload better. I've found GRT to help. But to get the most out of it you need to enter as many variables as possible, projectile dimensions and case water volume especially.

I'm not a bolt gun gunsmith of any kind, so I don't know if there are firing pin possiblities to explain your situation. Are the primers seated fully? Could that influence piercing?

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I measured 4 to 5 thousands below flush with an occasional one being only at 3 thou

Price drop

flogxal said:

I just ran GRT for 24" barrel, H4350, Berger 144, 2.810" COAL with 53.8gr H20 volume (that's my Hornady cases).

At 42.4gr H4350, GRT is predicting 2798.7 fps, and 61,636 psi.

I haven't loaded/shot this combo, I just ran it to see what it would say for your Q.

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I'm gonna look up GRT or quickload or one of those programs. Seems like it would be very very useful. Thank you for looking it up.

Reason I asked, I just got back from shooting and had 3 pierced primers. My charge weight was 40 grains. I've been having trouble with this damn rifle. Before, I had mediocre groups. Today, I had a very acceptable 5 shot group but 3 pierced primers. Primers are Rem 9 1/2.






For reference on the below pic. The other 6.5 CM fired cases had 130 hybrids with 40.5 grains.

Some people do not agree with this , I am a millwright by trade ( or was lol )
Take your bolt , measure the depth of the rim recess in the breech face
Clean the bolt breech face and barrel breech face
Lightly oil , thin oil , those faces
Use lead fuse wire above the bolt breech face recess ,which is also above the bore/chamber
Close the bolt slowly compressing the lead between the breech faces
The lead has no “memory “ delicately remove and measure the thickness of the lead and add to the recess depth of the bolt breech face measurement
This process should take any slop out of the bolt assembly and give you a true / almost exact headspace measurement