Re-barreling UK

Proof rounds are not go/nogo gauges. Before they are fired, firstly the chamber is checked with certified gauges. If they fail this they are rejected, see post #205.
I agree. But if, in 1996, they weren't as developed in their use of headspace gauges as they are now, they wouldn't have been able to proof the gun if they couldn't chamber the cartridges. And it sounds like they wouldn't have been able to, which adds to my misgivings as to the proof marks.
 
Proof rounds are not go/nogo gauges. Before they are fired, firstly the chamber is checked with certified gauges. If they fail this they are rejected, see post #205.
I don't think the proof house knows what a go / no go gauge is. They fire 1-2 proof cartridges and that's it.

As for certified gauges....
 
I don't think the proof house knows what a go / no go gauge is. They fire 1-2 proof cartridges and that's it.

As for certified gauges....

Physical examination:

The barrel and action are inspected to ensure that there are no visible signs of weakness or undue wear. The barrels are also measured and gauged to ensure that they conform to precise dimensions and tolerances.

This is taken from the London Proof House website. I am pretty sure they invested heavily in gauges and they also gained ISO accreditation. Definitely 2 proof rounds per barrel is the CIP requirement.
 
BTW, most .222 barrels have a 14" twist, which is rather limiting if converted to .223, where 12" or faster is the norm. Even with lead, never-mind lead-free.

Maybe Sierra would be happy to listen if you gave them a call offering to consult for them.

Their published load data for 223 Rem was developed on a Remington 600 with a 24" 1:14 twist barrel: http://accurateshooter.net/Downloads/sierra223rembolt.pdf
They clearly don't know a thing, despite being in the bullet making business for decades...:doh:
 
TBH, I am struggling with the alleged re-proof of that rifle to .223.

I am struggling to comprehend how blokes on the internet think they know the intimacies of the two UK proof houses and the systems they use.

Things been a bit quiet since all the pubs shut?
 



I have one for you. I was involved with some guns from the US going to proof. Now a fair few where bought from a well know and respected US company if not sent to us they would as you point out just be sold in the US and been ‘ ‘safe’ to use with no proof test.

Now because they came to GB they where all sent to proof unfortunately a fair few failed proof before firing at the gauging stage incorrect chamber sizes head space etc.

So what failed a major US manufactures QC (I won’t name them) what caught the failed the proof test saving potential issues or injury.
Remmington 700 in win mag brand new stock from Edgar bros at tge time , barrel loose to the hand ! Now I know allsort can slip through any qc but thats taking the proverbial
 
Having recently gone through the process of developing tubes for my employer, and as an experienced engineer I can tell you there is a LOT more that goes in to making firstly and then fitting a barrel than is commonly understood. Of course economy of scale has a bearing as well and the US has a much larger market. Gunsmiths always seem to come under fire (sorry) for their pricing but the fact is if they charged less, particularly in the UK, there would be far fewer in business.
 
Barrels on factory guns are largely awfully made if you look at them with under a borescope

Yup some may shoot

Some may shoot well sometimes

Others you struggle to get to group at all consistently

Custom barrels usually start from decent quality steel, deep drilled, honed , rifled, polishes , profiled and heat treated

Most button barrels start around £260 -£300 for decent quality barrels that are reliably made and have good quality steel

Then factor in at least five hours work to strip out the old barrel, prep, measure the action with tools upward of £400 each (my micrometers of which I have four, depth, thread, internal, external ) are all high spec and certified meteorology level )

Set up the barrel in the lathe using 1/10000” dti at each end using pin gauges (£800 per calibre set ) in the 1k Bison 6 jaw chuck

Get the barrel running as close to tru as possible then cut the tenon, check tru again , cut thread for action, check for fit, check tru again, rough out the chamber, cut chamber with reamer , check headspace and adjust.
Polish chamber after checking run out

Flip barrel - prep and set up again to run at zero or as close as possible

Cut muzzle thread, fit thread protector, cut crown and blend in thread protector

Clean and polish crown

Clean barrel

Prep and clean action again

Fit barrel and torque up

Check headspace

Complete submission for proof

Send and await return

All in on a simple re barrel your looking at 5-6 hrs work easily

So factor in your barrel cost and then my labour charge of £280 plus £80 for proof and your looking at roughly £660 to fit a quality barrel that is a plane ride improvement in quality over the factor barrel and fitted by someone who actually cares about how the gun shoots once it’s back with the customer

Given the level of outlay for equipment required and skills needed to fit a barrel properly and risk I’d suggest that 700 is a baseline level of cost

Prefit barrels - if you can find a factory action that consistently measures the same (action to action) then fine go ahead ans buy one

Tikka, Sako, Howa, Remington etc etc rarely if ever measure out the same

I’ve fourteen years worth of details from the actions I’ve rebarrelled and looking back at a few in the last moments show that same model actions don’t measure up the same

I wouldn’t buy a prefit unless it’s for an action that’s been measured and I know the headspace and bolt head / rear of tenon gap is as should be
A brilliant resum'e of what this Art/Craft entails. I'm afraid that there are a lot of folk who want everything for nothing, and know nothing to boot!!, talking of boots, and want a bespoke pair of best Loaks for £2.50p!!. I recall a friend who had a pair of shoes 50 years old, and were in beautiful condition, he said when he passed away I could have them.....but they were the wrong size, it only goes to show, you get what you pay for. Personally I would decline client's who believe they could get my advice elsewhere cheaper !!!

Patrick
 
Surely it's like anything else in life. If a gunsmith who has a proven reputation is asked to do a job(rebarrel) and says how he will do it, what he will use and what the cost will be then you are free to make up your own mind to say yes or no. I have a short list of people in my mind who I would use and one of them would be Ronin

Totally unrelated: I do some fencing. If I am asked to do a job I cant by my nature do a bad job or cut corners. I tell the customers this and tell them my recommendations and price. I seen another local guy doing a job for a woman, erect five 6ft panels with 6 posts. I never thought much of it until a friend of the woman asked me how much would you have charged just for the labour and the postcrete. I said well, i dont use postcrete so it would be a days work so £150. He said the person charged her £1000. The sad thing is the fence started to lean over so he went back dug the holes wider and put more postcrete in. Now that's a rip off
 
I’m detecting a bit of negativity towards prefits... not quite sure why - coming from LW they’d be top quality. Certainly built and cut to a higher standard than all but the highest end rifles, who are possibly using them anyway. And I wasn’t suggesting people DIY, just that it shouldn’t take a gunsmith long to headspace one.

Also, 600+ is fairly pirateacle price - someone’s placing a very very hefty markup on LW barrels. A LW prefit is au$540 here - and Pricing is generally on par with other shooting related products between the two countries if you convert $2 to 1GBP (standard pay equivalent), or about double what Americans pay. I can’t see why they would be so much in the UK, but I guess that’s the way it is...
Trevor Proctor wouldn’t admit to it but he used LW pre fits on occasion eg 9.3x62. Shot as well as the others.
 
Trevor Proctor wouldn’t admit to it but he used LW pre fits on occasion eg 9.3x62. Shot as well as the others.
Of course. There are a lot of very respected high end gunsmiths that use LW barrels. They only long chamber as well so the gunsmith only has to face off to length -how cutting your own chamber is better I can’t imagine. I can see how a short chambered barrel could be not so good. And how you can trust a manufacturer to make a barrel to a satisfactory standard but not chamber and cut the threads properly is confusing.
 
Of course. There are a lot of very respected high end gunsmiths that use LW barrels. They only long chamber as well so the gunsmith only has to face off to length -how cutting your own chamber is better I can’t imagine. I can see how a short chambered barrel could be not so good. And how you can trust a manufacturer to make a barrel to a satisfactory standard but not chamber and cut the threads properly is confusing.
Barrels are made by machine . Chambered on precision lathes that someone skilled takes a great deal of care and time getting true to the bore before reaming the chamber correctly for the cartridge in question.
 
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