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First off, Welcome to the Forum -

You are experiencing what Snipers call the Cold Bore Shot. It absolutely has to do with the temperature of the steel in the barrel with your first shot, or shots in the case of the small round like the .22

That is what makes a Tactical Shooter / Sniper for a SWAT team, for the military or for the Secret Service so special as opposed to normal shooters.

They only get one shot, and on top of everything else they have to contend with, they have to contend with accuracy differences that a Cold Bore shot involves.

Some "sharpshooters" who take professional shots for less than 100 yards, which is your average police "sniper" - will clean their rifle, then fire a fouling round and leave the bore dirty when they store the weapon to help assist in this compensation.

For longer range shots, there is something called a Cold Zero - which is usually several clicks of the scope off what their normal zero is.

In this day and age, with the ability to put together tack driving rifles right from the manufacturer, the two great things the average shooter has to deal with is the cold bore first shot, and the environmental conditions that the shot is being taken in....

I would suggest reading "The Ultimate Sniper" by Maj. John Plaster as he has a TON of information not only about this issue, but about accurate shooting in general and tricks / tips the average shooter can utilize to improve their skills....

JD
 

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Shilen says freezng a barrel has no effect, either good or bad.
Shilen also sells their barrels for profit and would have you believe they make the best ones out there. :rolleyes:

Cryogenics has a mystique about it that some people see real benefit from and some do not.

We have a 1,000 yard benchrest shooter, who is quite accomplished and is in fact either Single Distinguished or Double Distinguished, who will ONLY shoot a 30" Hart barrel that was sent to One Cryo. That is the only weapon he will compete with and swears by it up and down.

We also have a world record holder that shoots a Krieger with nothing special done to it other than the custom build.

Some people it works for, some, not so much. stalkingbear has a plethora of knowledge and has produced many fine articles and contributions, so if he has people that it has worked for, I am inclined to give him the benefit of the doubt....

JD
 

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And that very well could be the case. He could also have other issues that we can't diagnose because we can't see the rifle and inspect what he has going.

What we know is that his first couple of shots are off. If his bedding is all, or part of the problem, I would expect it would take more than 3 shots from a .22 to heat up the barrel to such an extent as to make the entire thing warp enough to have outside pressure from the fore-end. But, we don't know.

I don't believe his action screws are loose, because he is nailing .3's all day once the weapon is "warmed up".

I also don't believe his scope is mal-adjusted, because it would take a hell of a lot of heat to warp the rings above the action to get that out of whack.

We just don't know - so everyone is offering some options of some things to try.

To pull a barrel and send it to One Cryo, and then re-install it, would run a flat $60 from our shop and whatever One Cryo is charging at the time.

He could probably pull the entire action from the stock and perform a cheap and easy at home bedding job with a kit from Brownell's for less than $60, not factoring in the time he spends doing the job.

For that matter he could pull the action and sandbag it in place and fire it without the stock for free and see if the same conditions occur. *shrug*

But we don't know, because we don't know the condition of the weapon as it sits now.

Cold Bore / Cold Zero is a known occurance for every rifle - and whether or not it would contribute to a 3 inch miss or not, it does explain at least part of the problem.

But again, we don't know, because we can't inspect the weapon at hand and see where the problem may arise.

JD
 
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