booboobear Posted August 18, 2019 Report Share Posted August 18, 2019 Hi, iam just in the process of negotiating a deal for a remington 700 which has a barrel lenght of 25" just wondering how much it would cost to take 5" off Thread and recrown. Regards Neil Quote Link to comment Share on other sites More sharing options...
Moorlander Posted August 18, 2019 Report Share Posted August 18, 2019 You not having it threaded as well? Quote Link to comment Share on other sites More sharing options...
Catch-22 Posted August 18, 2019 Report Share Posted August 18, 2019 I think the OP was intending to both shorten and have it re threaded and crowned. Generally that’s what happens when chopping a barrel - it happens from the muzzle end. Unless of course you want to rechamber, in which case the barrel gets chopped from the breech end (contour of the Knox permitting) and rechambered in a different calibre (for example). booboobear - if you’re not changing calibre or the breech end, so only lopping some off the end and threading and crowing, the barrel will also need a re-Proof. Somewhere between £150-£250 shortening, threading and crowning, another £100 proof. Dunno where you are based, so unless there’s a decent gunsmith near you, factor another £25 each way for RFD handling fees to get it to your chosen smith and back again. Though for only a few hundred quid more, you can get a custom barrel made up (thinking one of the excellent Begera barrels, or a Lother Walther barrel). They cost around £200 -£250 for a blank and a good Smith is likely to charge around £600 for a full barrel job (the barrel, chambering, threading, crowing & proofing). Painting will be extra though. Reason why I suggest this as an option is Rem factory barrels are not really the best and you're paying about 60% of the cost of a custom barrel purely to keep the old factory barrel...with who knows how many rounds down it or how well it’s been maintained. Just don’t throw good money after bad. Worth considering. Quote Link to comment Share on other sites More sharing options...
lapua Posted August 18, 2019 Report Share Posted August 18, 2019 Should cost sub £100 and it doesnt need re-proofing. Thats for a chop, thread and crown Quote Link to comment Share on other sites More sharing options...
Dellboy Posted August 18, 2019 Report Share Posted August 18, 2019 surely no one would do it without re proof as this protects the gunsmith ? Quote Link to comment Share on other sites More sharing options...
Moorlander Posted August 18, 2019 Report Share Posted August 18, 2019 If its re threaded it does need re proofing , ask the proof house directly if you doubt it. Quote Link to comment Share on other sites More sharing options...
lapua Posted August 19, 2019 Report Share Posted August 19, 2019 7 hours ago, Moorlander said: If its re threaded it does need re proofing , ask the proof house directly if you doubt it. That could be argued about for ages, but i wont bite.. best ask a professional rifle builder what they do and what their insurance allows them to do to find out what happens in the real world based on relevant good practice. Quote Link to comment Share on other sites More sharing options...
Moorlander Posted August 19, 2019 Report Share Posted August 19, 2019 Whilst the proof houses do come across as a mafia I still think I`d go with what they claim is law. Quote Link to comment Share on other sites More sharing options...
eddieb Posted August 19, 2019 Report Share Posted August 19, 2019 Have Jackson Rifles not already disproved the need for re-proofing on end of barrel work such as shortening -screw cutting - re-crowning. I know in our area a very well experienced gun-smith stopped sending such work to the proof-house. Quote Link to comment Share on other sites More sharing options...
phoenix Posted August 19, 2019 Report Share Posted August 19, 2019 That was my understanding also. I recently has a CZ527 in 22 hornet shortened and threaded, by a smith who builds and shoots F class rifles and the subject of reproof was never even discussed. On a modern rifle which was proofed when new, can anyone describe a set of circumstances under which chopping the barrel by a couple of inches and rethreading it for a moderator can weaken the barrel to the point of failure? Cheers Bruce Quote Link to comment Share on other sites More sharing options...
Moorlander Posted August 19, 2019 Report Share Posted August 19, 2019 3 hours ago, eddieb said: Have Jackson Rifles not already disproved the need for re-proofing on end of barrel work such as shortening -screw cutting - re-crowning. I know in our area a very well experienced gun-smith stopped sending such work to the proof-house. No , they did get an ambiguous report on moderators however. Quote Link to comment Share on other sites More sharing options...
Moorlander Posted August 19, 2019 Report Share Posted August 19, 2019 2 hours ago, phoenix said: On a modern rifle which was proofed when new, can anyone describe a set of circumstances under which chopping the barrel by a couple of inches and rethreading it for a moderator can weaken the barrel to the point of failure? Cheers Bruce If a bad or inexperienced gunsmith went too deep on undercut it would definitely weaken the end of the barrel , add a big heavy moderator and you could be in for some fireworks. Quote Link to comment Share on other sites More sharing options...
phoenix Posted August 19, 2019 Report Share Posted August 19, 2019 A bit more detail on exactly how those "fireworks" would manifest themselves please Cheers Bruce Quote Link to comment Share on other sites More sharing options...
lapua Posted August 19, 2019 Report Share Posted August 19, 2019 1 hour ago, Moorlander said: If a bad or inexperienced gunsmith went too deep on undercut it would definitely weaken the end of the barrel , add a big heavy moderator and you could be in for some fireworks. And that wouldn't be checked or found out by the proof house..... Quote Link to comment Share on other sites More sharing options...
Moorlander Posted August 19, 2019 Report Share Posted August 19, 2019 3 minutes ago, lapua said: And that wouldn't be checked or found out by the proof house..... It would cover whoever had done the work better than someone who hadn't bothered to get it proofed . Quote Link to comment Share on other sites More sharing options...
Moorlander Posted August 19, 2019 Report Share Posted August 19, 2019 27 minutes ago, phoenix said: A bit more detail on exactly how those "fireworks" would manifest themselves please Cheers Bruce If the undercut was too deep the moderator could blow off the end taking the thread with it , bits of shrapnel could fly around , I wouldnt want to be standing next to it. You could argue that modern rifles dont need proofing at as they have a proven design but then not every rifle passes proof. Quote Link to comment Share on other sites More sharing options...
phoenix Posted August 19, 2019 Report Share Posted August 19, 2019 Sorry, but I'm not convinced by that. Are there any confirmed instances of the scenario you describe actually happening? Quote Link to comment Share on other sites More sharing options...
Moorlander Posted August 19, 2019 Report Share Posted August 19, 2019 16 minutes ago, phoenix said: Sorry, but I'm not convinced by that. Are there any confirmed instances of the scenario you describe actually happening? I agree its unlikely but I`d say not impossible , if it did I`d imagine the riflesmiths insurer would be a bit hesitant if it hadn't been proofed, personally I like to dot the I`s and cross the T`s and would pay my RFD for proofing. Quote Link to comment Share on other sites More sharing options...
phoenix Posted August 20, 2019 Report Share Posted August 20, 2019 I'm a Nondestructive Testing Engineer by trade and have spent over 40 years looking at and measuring pressure bearing steel tubes with threads on their ends and I'm totally confident that the scenario you describe is about as likely as me winning the lottery every week for a year Cheers Bruce Quote Link to comment Share on other sites More sharing options...
Dunc Posted August 20, 2019 Report Share Posted August 20, 2019 My last rifle to go through the London proof house has the proof marks at the muzzle end of the barrel. Any shortening of my barrel would be removing the existing proof marks! Sneaky.... Quote Link to comment Share on other sites More sharing options...
Moorlander Posted August 20, 2019 Report Share Posted August 20, 2019 3 hours ago, Dunc said: My last rifle to go through the London proof house has the proof marks at the muzzle end of the barrel. Any shortening of my barrel would be removing the existing proof marks! Sneaky.... Indeed , if you look at import rifle that has to go to proof and is threaded the sneaky gits stamp it just below the thread . Quote Link to comment Share on other sites More sharing options...
Moorlander Posted August 20, 2019 Report Share Posted August 20, 2019 17 hours ago, phoenix said: I'm a Nondestructive Testing Engineer by trade and have spent over 40 years looking at and measuring pressure bearing steel tubes with threads on their ends and I'm totally confident that the scenario you describe is about as likely as me winning the lottery every week for a year Cheers Bruce However the proof house disagree . Quote Link to comment Share on other sites More sharing options...
Bob57 Posted August 20, 2019 Report Share Posted August 20, 2019 1 hour ago, Moorlander said: Indeed , if you look at import rifle that has to go to proof and is threaded the sneaky gits stamp it just below the thread . Yep, that's what they did to two of my rifle's in Birmingham proof house recently, and chamber end too. Quote Link to comment Share on other sites More sharing options...
Dellboy Posted August 21, 2019 Report Share Posted August 21, 2019 13 hours ago, Moorlander said: Indeed , if you look at import rifle that has to go to proof and is threaded the sneaky gits stamp it just below the thread . Cant blame them can you after all they have stamped it safe they dont want some 'cowboy' machining it afterwards .. Quote Link to comment Share on other sites More sharing options...
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