Guest Posted January 30, 2012 Report Share Posted January 30, 2012 How long / how many pellets does it take to run in a new air rifle and what difference will I notice afterwards? Quote Link to comment Share on other sites More sharing options...
lewj Posted January 30, 2012 Report Share Posted January 30, 2012 some shoot bob on to start with, is it spring or pcp anything from a few to a tin of 500 id say 50 for most but dont quote me Quote Link to comment Share on other sites More sharing options...
Gnome of the Woods Posted January 30, 2012 Report Share Posted January 30, 2012 Give a springer a tin to settle down and a pcp should just need a barrel pull through and 50 to get it going. As a rough guide Quote Link to comment Share on other sites More sharing options...
demonwolf444 Posted January 31, 2012 Report Share Posted January 31, 2012 i read somewhere 2000 for a springer.. Quote Link to comment Share on other sites More sharing options...
hifi nut Posted January 31, 2012 Report Share Posted January 31, 2012 ive just had new gas ram in my evo and ive been told to put a tin of pellets through to settle it. Quote Link to comment Share on other sites More sharing options...
richard1951 Posted January 31, 2012 Report Share Posted January 31, 2012 Each one is diferent usualy about 1 or 2 tins but the most inportant thing is to clean properly with brass brush and rod followed with cloth or felt oiled pelets every 100 or so to remove any lead and other bits from it.after a few 100 you will get less and less till nearly none at all. Though the quality of machining is far better than 20 years ago so it may not take anything like as much as it usto do i am expecting a new gun in afew weeks and intend to put 1000 through it in the air before i even put the scope on Quote Link to comment Share on other sites More sharing options...
Gnome of the Woods Posted January 31, 2012 Report Share Posted January 31, 2012 No need for a brass brush is an air rifle in my opinion, just a decent quality pull through. It's just the coating on the pellet that you are removing, no combustion material. Quote Link to comment Share on other sites More sharing options...
Hamster Posted January 31, 2012 Report Share Posted January 31, 2012 Each one is diferent usualy about 1 or 2 tins but the most inportant thing is to clean properly with brass brush and rod followed with cloth or felt oiled pelets every 100 or so to remove any lead and other bits from it.after a few 100 you will get less and less till nearly none at all. Though the quality of machining is far better than 20 years ago so it may not take anything like as much as it usto do i am expecting a new gun in afew weeks and intend to put 1000 through it in the air before i even put the scope on Most important thing? Sorry but I can't see how that's even necessary let alone important, PCP's maybe, the vapour left in the barrel might constitute a rust hazard but spring rifles don't benefit from such meticulous cleaning regime. Quote Link to comment Share on other sites More sharing options...
richard1951 Posted January 31, 2012 Report Share Posted January 31, 2012 at first you are removing bits of detritus left in the rifeling and that is what the first batch of pelets are for and to ware down any rough edges and it is inportant to get all the crud out as it gets worn away and not ground into the groves as i said prob not as bad with the modern guns as was 40 years ago but better to do it .... in my oppinion Quote Link to comment Share on other sites More sharing options...
Guest Posted January 31, 2012 Report Share Posted January 31, 2012 Thanks for all your comments. It's a springer and I have put over a tin through it but I had better clean it.... Quote Link to comment Share on other sites More sharing options...
buster321c Posted January 31, 2012 Report Share Posted January 31, 2012 Most important thing? Sorry but I can't see how that's even necessary let alone important, PCP's maybe, the vapour left in the barrel might constitute a rust hazard but spring rifles don't benefit from such meticulous cleaning regime. PCP`s fire dry air . If you have vapour in yours , get it serviced :lol: Quote Link to comment Share on other sites More sharing options...
Hamster Posted January 31, 2012 Report Share Posted January 31, 2012 PCP`s fire dry air . If you have vapour in yours , get it serviced :lol: Precisely, which is why I said might. Quote Link to comment Share on other sites More sharing options...
Catweazle Posted January 31, 2012 Report Share Posted January 31, 2012 I polished the barrels on several of my rifles as soon as I got them. I have no before-and-after data but they sure shoot well. I used bore mops with a couple of wraps of kitchen roll to make them a tighter fit, and a smear of diamond honing paste that used to be for polishing the ends of fibre-optic cables. This brings the barrels up a treat. Also, have a look at the crown of the barrel, some factory jobs leave a lot to be desired. The standard AirArms barrel crown was pretty horrible so I re-cut it as follows. Standard crown First I set the barrel up in the lathe using a dial gauge on the outside of the barrel, to check that the bore was concentric with the outside I used a straight piece of ground steel rod wrpped with ptfe plumbing tape at both ends so that it was a tight fit in the bore with 2" sticking out of the front, it tuned out to be concentric so I machined the front face off the barrel to get rid of the AirArms crown Once the original crown was completely gone I started to cut the new one using a ball bearing quickly welded to a piece of spring steel and some diamond lapping compound. I'm sure that car valve grinding paste would work as well. I did most of it in the lathe on very slow speed whilst tilting the ball to different angles and frequently lifting the ball from the crown to allow the cutting paste to get back where it was needed. When the crown had expanded past the edge of the bore I removed the barrel from the lathe and did the rest by hand using a finer grade of paste and as random a motion as I could. The crown soon took on a semi shiny finish, and although it is difficult to see in the photos, because of the distortion of the lens I used, the crown came out really well. It's 0.177 by the way. Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted January 31, 2012 Report Share Posted January 31, 2012 (edited) In a springer you are lapping the piston to the cylinder bore and burning off any excess lubricant left over during manufacture-this can take anything from one to lord knows how many tins depending on quality of machining e.t.c.-the better quality guns tend to need little running in these days because of the advances in engineering practice (modern cars take less time to run in than 20 years ago).As for cleaning the bore I,personally,would not touch it with anything other than an occasional pull thru-any lead left in the bore is removed by the following shot unless a defect is present and "pitting" has left tiny pieces of lead to fill "holes"in the bore-this process of "leading" the barrel is desirable as it aids accuracy-poking a stiff brush down the tube could remove the lead and thus reduce the performance of your barrel.A pcp takes little running in as there is little in the way of metal to metal contact-more than one tin would be unusual.BTW catweazle-who cut the thread on that barrel cos its terrible-should have used a CNC. Edited January 31, 2012 by bruno22rf Quote Link to comment Share on other sites More sharing options...
richard1951 Posted January 31, 2012 Report Share Posted January 31, 2012 At this stage the main object is not leading but for the abrasion of the pellets to remove any burs and little bits of badly machining bits that on the passage of the pellets, mark and damage the pellets and the removing of these to increase accuracy. pellets with bits knocked from skirt dont fly well Catweasle has done the same thing with grinding paste and probably quicker and better than it can be done with pellets, but he appeares to have or have access to equipment most dont have Quote Link to comment Share on other sites More sharing options...
Dekers Posted January 31, 2012 Report Share Posted January 31, 2012 I polished the barrels on several of my rifles as soon as I got them. I have no before-and-after data but they sure shoot well. I used bore mops with a couple of wraps of kitchen roll to make them a tighter fit, and a smear of diamond honing paste that used to be for polishing the ends of fibre-optic cables. This brings the barrels up a treat. Also, have a look at the crown of the barrel, some factory jobs leave a lot to be desired. The standard AirArms barrel crown was pretty horrible so I re-cut it as follows. Standard crown First I set the barrel up in the lathe using a dial gauge on the outside of the barrel, to check that the bore was concentric with the outside I used a straight piece of ground steel rod wrpped with ptfe plumbing tape at both ends so that it was a tight fit in the bore with 2" sticking out of the front, it tuned out to be concentric so I machined the front face off the barrel to get rid of the AirArms crown Once the original crown was completely gone I started to cut the new one using a ball bearing quickly welded to a piece of spring steel and some diamond lapping compound. I'm sure that car valve grinding paste would work as well. I did most of it in the lathe on very slow speed whilst tilting the ball to different angles and frequently lifting the ball from the crown to allow the cutting paste to get back where it was needed. When the crown had expanded past the edge of the bore I removed the barrel from the lathe and did the rest by hand using a finer grade of paste and as random a motion as I could. The crown soon took on a semi shiny finish, and although it is difficult to see in the photos, because of the distortion of the lens I used, the crown came out really well. It's 0.177 by the way. Well handy to have the skills/equipment to do this! Quote Link to comment Share on other sites More sharing options...
Dekers Posted January 31, 2012 Report Share Posted January 31, 2012 Springers may take a little longer to settle down than a PCP, but with modern manufacturing techniques and tolerances I would struggle to see vast quantities of pellets being required! Quote Link to comment Share on other sites More sharing options...
Catweazle Posted January 31, 2012 Report Share Posted January 31, 2012 BTW catweazle-who cut the thread on that barrel cos its terrible-should have used a CNC. That's the standard factory AirArms thread, on a TX200 Mk2. I'm going to guess is was done on a CNC machine with a rotating tool, because it looks scalloped. Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted January 31, 2012 Report Share Posted January 31, 2012 Lapping a barrel is a rare necessity these days and it is foolish to assume that doing so will automatically increase the guns accuracy,it is also the domain of a highly skilled individual.We are talking about guns here that shoot over 40-50 yards and not a couple of kilometers so how much benefit is likely to be gained?-more likely to do more harm than good.Most barrel makers these days are very proficient(with the exception of the cheaper chinese makers who struggle to maintain consistent land depth)so time taken on your tube,unless it is obviously damaged,would probably be more worthwhile spent in other areas. Quote Link to comment Share on other sites More sharing options...
richard1951 Posted January 31, 2012 Report Share Posted January 31, 2012 I agree Bruno But look at the state that the gun of catweazel's left the c/o . and that is a area that is visable not hidden I wont mention the make as everyone knows my oppinion of that 2nd rate company lol.but look at the thread on the end and the finish that ~Cat has had to finish again now if that was inspected and sent to it's new owner what will the inside of the bore look like so i think good idea to lightly hone it with paste . that wont do any harm , not like using a stone and then not need so many pellers putting through it Quote Link to comment Share on other sites More sharing options...
Catweazle Posted January 31, 2012 Report Share Posted January 31, 2012 Lapping a barrel is a rare necessity these days and it is foolish to assume that doing so will automatically increase the guns accuracy,it is also the domain of a highly skilled individual.We are talking about guns here that shoot over 40-50 yards and not a couple of kilometers so how much benefit is likely to be gained?-more likely to do more harm than good.Most barrel makers these days are very proficient(with the exception of the cheaper chinese makers who struggle to maintain consistent land depth)so time taken on your tube,unless it is obviously damaged,would probably be more worthwhile spent in other areas. Don't confuse polishing with lapping. Lapping would have involved using a sized lead slug to give a uniform, or even better, slightly tapering bore size. I just polished my barrels, to remove machining roughness. The barrels shoot very well, but as I wrote, I have no before-and-after data. I view it as a process that the factory doesn't have the time to do. Quote Link to comment Share on other sites More sharing options...
buster321c Posted January 31, 2012 Report Share Posted January 31, 2012 Precisely, which is why I said might. Thats not what it reads , you say ``the vapour left in the barrel might constitute a rust hazard`` which implies that pcp`s leave vapour in the barrel . Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted February 1, 2012 Report Share Posted February 1, 2012 Yep-you got me there Richard-that standard of workmanship belongs in the past-I could have done better with a Die Nut.If I was offered a gun like that I would refuse to even consider it-shame on you Air Arms. Quote Link to comment Share on other sites More sharing options...
Hamster Posted February 1, 2012 Report Share Posted February 1, 2012 Thats not what it reads , you say ``the vapour left in the barrel might constitute a rust hazard`` which implies that pcp`s leave vapour in the barrel . I apologise, people, don't touch your barrels, PCP or spring. Quote Link to comment Share on other sites More sharing options...
secretagentmole Posted February 1, 2012 Report Share Posted February 1, 2012 Catweazle did a darned nice job! Quote Link to comment Share on other sites More sharing options...
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