The proof is for the firearm including the factory threaded portion of the barrel and it should have a proof mark on the underside of the barrel just behind the thread. Attaching or removing a moderator or muzzle brake does not change the state of proof of the barrel however in theory the item screwed to the barrel should have a proof mark.
The 'in theory' part is the interesting part as you can purchase a moderator which does not have a prrof mark however you cannot sell it with the rifle without proof.
/d
Du lytter aldrig til de ord jeg siger. Du ser mig kun for det tøj jeg har paa ...
The 'in theory' part is the interesting part as you can purchase a moderator which does not have a prrof mark however you cannot sell it with the rifle without proof.
Ah, that is possibly where I confused what I was being told.
Checked barrel and there is a stamp just behind the thread.
So at the weekend I inquired about getting a moderator and mentioned I had a thread already. To which the gunsmith said no we will chop that off - then send to re-proof. Otherwise the rifle may not be accurate.
Okay I can see what he is saying, but why bother to have a screw cut in the first place if they will just get cut off? Or is it okay for a farmer but not a target shooter?
fra150l wrote:Checked barrel and there is a stamp just behind the thread.
So at the weekend I inquired about getting a moderator and mentioned I had a thread already. To which the gunsmith said no we will chop that off - then send to re-proof. Otherwise the rifle may not be accurate.
Okay I can see what he is saying, but why bother to have a screw cut in the first place if they will just get cut off? Or is it okay for a farmer but not a target shooter?
Take your rifle somewhere else. Get a second opinion. Don't let that dealer convince you to part with your money until you are happy you've explored all the options.
It has been proven in the High Court that barrels do not need to be sent for re-proof after threading for a moderator or for moderators to be proofed. The proof houses are very good at making up rules to afford themselves more income.
I re-called the gunsmith who I talked to and their rationale was that if anything were to go wrong with the rifle after doing the work, the first person you'd go back on is them, so to avoid any issue they send them as a matter of procedure back to the proof house after doing the work to the barrel.
I've also read of instances of insurance companies wanting this done to stay insured.
As for the guy who is saying that they'd cut it off... this would seem to fit with what the guys were saying to me at the smiths I called. Basically, for them to do the work they'll cut it on the lathe and get it to be a perfect fit, to that exact moderator. Rather than cut to the size of the thread that's labelled on the moderator.
The way they put it, if you're doing XXX number of moderator threads in a batch, the tooling is going to wear. and whose to say that it's not a few thou wear by the end of the batch from the start. so the only way to ensure a tight fitting mod that wont be loose or cause issue, is to cut the thread exactly to the mod, cut it close, screw it on, take some off, screw it n, take some off... etc.
Makes sense I suppose. but it limits the choice of changing mods down the line somewhat, don't you think? Although this is a well renowned gunsmith, so you don't get a good name without an eye for details...
