ColoradoMinuteMan
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In my experience they inspect the weapon and the container, then you lock it. I'm not sure how they would inspect it again without cutting off the locks.
Does disassembly affect point of impact?
- Thread starter mcgiiver
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In my experience they inspect the weapon and the container, then you lock it. I'm not sure how they would inspect it again without cutting off the locks.
In my experience,there can be a slight change of zero after stock removal with some rifles.Usually with a well bedded synthetic stock,the change will be slight or non-existent.One of my 700's is very well bedded with a tapered .250 recoil lug.I can take it apart,reassemble(screws torqued to 50 inch-pounds),take it and shoot to POA every time.This is a very accurate and consistent rifle.Now about those action screws...the main reason they will go a little farther every time they're torqued is because they stretch every time they're drawn down.That's how a bolt works...it has to stretch to some nano degree when it's under load(tightened).For the OP,you gotta shoot it when you get there,period.Anything can happen.
WVRJ,
What's the torque limit for 1/4-28 and 1/4-32 grade 5 steel stock screws in clean receiver threads that doesn't stretch them past their elasticity limit?
Have you've verified the stock material doesn't compress over time from torquing and measured screw lengths to support your claim screws stretch?
What's the torque limit for 1/4-28 and 1/4-32 grade 5 steel stock screws in clean receiver threads that doesn't stretch them past their elasticity limit?
Have you've verified the stock material doesn't compress over time from torquing and measured screw lengths to support your claim screws stretch?
FL-NC
Member
taliv- by doing it after every session, you are MAINTAINING the torque specs, not giving it a chance to work loose. The original question was after removal of the stock from the action, and as previously stated, the answer is yes, there is a shift, in my experience- even when re-torque is with the same wrench in the same manner.
Glockula
Member
Why not run a test before traveling? Take it out of the stock and shoot it. I would do this two or three times. Typically I am less than 3 inches off and sometimes I get the same POA. I would run my own test for sure
Bart,I have seen the screws on a pillar bedded 700 go to the point that the front one had to have a few thousandths filed off of it because the bolt lug was rubbing it.How much torque or how many tightenings it takes for the stretch to be measurable will vary.Nowadays with the allen and torx head screws we have,it's a lot easier to over tighten them.
Sav .250
Member
There is a probability of that.
WVRJ says he has seen the screws on a pillar bedded 700 go to the point that the front one had to have a few thousandths filed off of it because the bolt lug was rubbing it.
Without confirming the stock dimensions at the screw points didn't compress over time, or measuring screw length from shoulder to tip didn't lengthen over time, that claim has no merit.
One more time. What's the clamping tension/force in pounds stock screws put on joined parts? For example, the 1/4-28 grade 5 steel screws Remington uses.
Without confirming the stock dimensions at the screw points didn't compress over time, or measuring screw length from shoulder to tip didn't lengthen over time, that claim has no merit.
One more time. What's the clamping tension/force in pounds stock screws put on joined parts? For example, the 1/4-28 grade 5 steel screws Remington uses.
Gtscotty
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Instead of demanding an answer from strangers on the Internet, you can solve for bolt preload yourself using the Maney equation.
Torque = torque coefficient x bolt diameter x preload force
The torque coefficient is usually ballparked at 0.2 for dry steel and 0.15 for lubed.
The punch line is that unless he was more than doubling most of the action screw torque specs I've seen, he didn't yield a grade 5 1/4" bolt, and it would be tough to accidentally do even on a grade 2. Most likely the pillars were slightly crushed or buckled.
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I may be wrong but the TSA requires you use a lock they can access. http://www.bing.com/images/search?q=TSA+luggage+locks&FORM=HDRSC2
What a lot of traveling shooters do is padlock the gun INTO the case thru cables or a hasp that is built into the case. Plenty of posts on the subject as guns sometimes don't arrive - just an empty case. Especially going thru Eastern Europe.
You put your locks on it that are not TSA accessible, and yes, they will cut them off. http://traveltips.usatoday.com/tsa-luggage-lock-regulations-62312.html
Traveling with firearms is a lot different than it used to be. And why a lot of shooters take ground transport to reduce the risks where possible. Along with cutting down the 4 hour wait to be searched at the hub.
It's security theatre and it only impresses the unlearned masses with large credit card limits.
What a lot of traveling shooters do is padlock the gun INTO the case thru cables or a hasp that is built into the case. Plenty of posts on the subject as guns sometimes don't arrive - just an empty case. Especially going thru Eastern Europe.
You put your locks on it that are not TSA accessible, and yes, they will cut them off. http://traveltips.usatoday.com/tsa-luggage-lock-regulations-62312.html
Traveling with firearms is a lot different than it used to be. And why a lot of shooters take ground transport to reduce the risks where possible. Along with cutting down the 4 hour wait to be searched at the hub.
It's security theatre and it only impresses the unlearned masses with large credit card limits.
PowerG
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redbullitt
Member
It can always change. Put it back together with a torque wrench repeatably and things start looking a bit better. I would still always check it either way.
UPDATE on "Does disassembly affect point of impact?"
I was going to take Glockula's advice and try a disassembly to see if it affects impact point. However, when I went to the range, I slipped a piece of paper under the barrel and discovered, what I thought was a floated barrel, actually had a slight contact point. I relieved the barrel channel and will retest the rifle.
I was going to take Glockula's advice and try a disassembly to see if it affects impact point. However, when I went to the range, I slipped a piece of paper under the barrel and discovered, what I thought was a floated barrel, actually had a slight contact point. I relieved the barrel channel and will retest the rifle.
As PowerG's link says:
"Firearms must be unloaded and locked in a hard-sided container and transported as checked baggage only. Only the passenger should retain the key or combination to the lock."
A case that doesn't contain a gun may only use the TSA locks (more specifically, you can use any lock, but they will cut it. I use odd colored zipties, on the theory TSA can cut them, but a thief can't get in w/o me knowing, unless he carries a lot of zipties).
Guns are different, though - TSA locks aren't acceptable. You use normal locks, and when I've traveled the key never leaves my hand, or if it's a combo lock I open and then close it. The TSA never gets access to either.
For that reason, some people with expensive cameras or electronics of whatever travel with a cheap gun, just so they can lock the expensive stuff in with the gun.
"Firearms must be unloaded and locked in a hard-sided container and transported as checked baggage only. Only the passenger should retain the key or combination to the lock."
A case that doesn't contain a gun may only use the TSA locks (more specifically, you can use any lock, but they will cut it. I use odd colored zipties, on the theory TSA can cut them, but a thief can't get in w/o me knowing, unless he carries a lot of zipties).
Guns are different, though - TSA locks aren't acceptable. You use normal locks, and when I've traveled the key never leaves my hand, or if it's a combo lock I open and then close it. The TSA never gets access to either.
For that reason, some people with expensive cameras or electronics of whatever travel with a cheap gun, just so they can lock the expensive stuff in with the gun.
ColoradoMinuteMan
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There have been a few links posted and I can confirm through several recent first hand experiences that when you travel domestically you use a regular old padlock (or several) that nobody but you has the key to. No they will not cut them off. They fully inspect the container and firearm prior to you locking it and then checking it. If you can open the container at all and see or touch the firearm while it is locked they will not let you check it. In fact, I once had a hand gun case that had a lock on one side, he was able to lock it and still crack open the other side just enough to see it. The TSA guy was nice enough to drill a hole in the far side of the case as I ran to the gift shop to buy another lock to put through the hole and lock it. He was very helpful and gun friendly.
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