The_Engineer Posted January 12, 2015 Report Share Posted January 12, 2015 Hi all, Quick question: I bought a second hand ('99) Miroku Mk70 sporting back in November for sporting clays. The gun had been used as a field gun and is lovely and tight and in good condition with the odd small ding in the stock (Don't think it had been used much - despite its age) and as a result the action to break was stiff. Its fine for me to use but I take my dad shooting, He has a touch of arthritis and struggles to break it with the same ease I do. Ive only put around 350 shells through it up to now but was wondering - are they generally a tight action or will it loosen with use? Anything I can do/use during maintenance and cleaning that might ease it? As a footnote - I love the gun but does anyone know if it will be steel proof? how can I tell? Apologies if these are 'novice' questions. Thanks in advance, IR Quote Link to comment Share on other sites More sharing options...
robbiep Posted January 12, 2015 Report Share Posted January 12, 2015 To check if it's steel proofed, dismantle and have a look on the underside of the chambers. There should be a 'fleur-de-lys' symbol (search on google to see what it looks like) if it was steel proofed. If not, then most people will still say that normal (not magnum/HP) steel should be fine, if used through light chokes (1/2 or less) Quote Link to comment Share on other sites More sharing options...
SEshooter Posted January 12, 2015 Report Share Posted January 12, 2015 My mk70 was tight to break when I got it, it has eased now it's had a few thousand cartridges through it Quote Link to comment Share on other sites More sharing options...
sishyplops Posted January 12, 2015 Report Share Posted January 12, 2015 At that age it is highly unlikely that it will be steel proof for HP steel, normal stuff is fine, you really only need HP if you are goose shooting, Yes it will loosen over time but it's not a quick thing you'll need 2-3000 through it, they are very well built guns Quote Link to comment Share on other sites More sharing options...
motty Posted January 12, 2015 Report Share Posted January 12, 2015 At that age it is highly unlikely that it will be steel proof for HP steel, normal stuff is fine, you really only need HP if you are goose shooting, Yes it will loosen over time but it's not a quick thing you'll need 2-3000 through it, they are very well built guns Why is that? Quote Link to comment Share on other sites More sharing options...
Westward Posted January 12, 2015 Report Share Posted January 12, 2015 Compared with some makes Mirokus are never really stiff to open, even when new. Not floppy perhaps but not as stiff as a new Beretta. Have you lubricated the action knuckle with grease where it mates with the forend? The easy way to check the amount of forend friction is to open the gun with the forend removed. Quote Link to comment Share on other sites More sharing options...
Daveo26 Posted January 12, 2015 Report Share Posted January 12, 2015 (edited) Iv got a browning 525 and that's the same. Very tight to open, I can open the gun and move the barrels to any point and they stay there. Just do what I do and use it as an excuse to shoot more often, "Just nipping out to continue breaking the gun in, love" Edited January 12, 2015 by Daveo26 Quote Link to comment Share on other sites More sharing options...
The_Engineer Posted January 12, 2015 Author Report Share Posted January 12, 2015 Iv got a browning 525 and that's the same. Very tight to open, I can open the gun and move the barrels to any point and they stay there. Just do what I do and use it as an excuse to shoot more often, "Just nipping out to continue breaking the gun in, love" Sounds just the same as mine. I will be using this excuse now too! Thanks for the help gents. Quote Link to comment Share on other sites More sharing options...
ChrisAsh Posted January 13, 2015 Report Share Posted January 13, 2015 Might be worth a service at your local gunsmith as at 15 years old it should have loosened up by now, with field use all sorts of muck and rust could be in the workings, to me better safer to get it checked over than getting something going wrong for lack of a service. it would also give you more comfort about the gun Quote Link to comment Share on other sites More sharing options...
Guest cookoff013 Posted January 13, 2015 Report Share Posted January 13, 2015 if its really tight, then you should lubricate it immediately. a friend of mine bought a mk70, didnt lubricate the hinge at all, in a short space of time, it seized up and locked shut, needed a gunsmith to open it. he completely screwed up the gun. after it got "repaired" he then just sold it. always grease the hinge / knuckle. the reason for this being is, the longer the "break in period" of the mating faces with lube, the longer the hinge is going to last. i have had my mk70 for 10 years, it has regular use and it is tight and not floppy. Quote Link to comment Share on other sites More sharing options...
Daveo26 Posted January 13, 2015 Report Share Posted January 13, 2015 Mines greased, first thing i did was give it a good clean and correct lube then i shot it for the first time. I cant imagine you could seize a gun shut unless it was put away wet?? Quote Link to comment Share on other sites More sharing options...
wymberley Posted January 13, 2015 Report Share Posted January 13, 2015 Might be worth a service at your local gunsmith as at 15 years old it should have loosened up by now, with field use all sorts of muck and rust could be in the workings, to me better safer to get it checked over than getting something going wrong for lack of a service. it would also give you more comfort about the gun +1. Consequently, with that age is there any chance it's been 'put back on the face' and sold on? Quote Link to comment Share on other sites More sharing options...
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