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    Fitting a new forestock to a No4

    Hi all

    I was wondering what sort of fit should be achieved when attaching a new lower forestock to a No4? Should the barrel/reciever just drop in with minimal resistance or should it be a tight fit requiring a bit of persuasion to get it to seat?

    Thanks
    Renick
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    Oh boy, there's so much that can be said about that one.

    In general, the barrel should be free floating, except right under the chamber / knox, and under the front sight. At that spot (front sight), there should be upward pressure of... is it between 3 and 7 pounds? Then, there should be contact between the forend and the bottom face of the receiver, and between the front face of the butt socket and the rear face of the forend. I think P. Laidlericon explained it best to me about a year ago, I'll try to see if I can find that reference. And someone (Ed?) had a great picture that showed where the contact surfaces should be...

    Oh and the sear lugs should also put pressure forward on the forend.

    Lou
    Last edited by louthepou; 01-14-2009 at 07:11 PM.

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    Thanks Lou

    Whoa! I had no idea that I was opening such a can, when it comes to restocking a rifle....that crappy bubba'ed stock is starting to look OK again....
    I look forward to seeing those pictures. How can you tell where the metal work is touching the furniture let alone how much pressure is being exerted?

    I have removed just enough wood so that the lower forestock and buttstock are both under a slight pressure fit (I can always remove more wood later), I have no idea if or where the barrell, reciever or knox might be touching though. I did have to removed a small amount of wood from the front face of each recoil lug to get the forestock on well, so I know they are exerting some forward pressure.

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    Hi Renick,

    Hey, it's a lot of fun ain't it? I learn something new with each rifle I work on.

    I use a feeler gauge a lot, to see where forend wood touches the barrel. And I "feel" things a lot with my hands. I suppose practice, and taking your time, is the best advice I can have.

    I found what I was looking for - more thorough explanations (and more enjoyable!). The author is Mr. Peter Laidlericon, and he posted this on another forum, http://www.jouster.com/cgi-bin/lee-e...lee-enfield.pl

    So here goes (quoted):
    ---------

    Fitting a fore-end correctly
    Posted By: Peter Laidler
    Date: Sat 5 Jan 2008 1:53 pm
    FITTING A NEW FORE-END
    First of all, you’ll have to forgive me but this article won’t even start to reflect the time it takes to truly train someone to fit up a fore-end. But starting at the word go, I should say that there’s nothing to be afraid of with wood. It’s VERY forgiving and if you make a cock-up, then you can always cut out or back, glue, patch, peg and start again.

    Here’s rule number 1 with the fore-end. The most important part of the fore-end is the front trigger guard screw. I’ll be referring to it as that and not the king screw. Somebody told me that it was that Australians who gave it that name but it must have been after 1970 because while I was there, it was always the screw, front trigger guard. Incidentally, and I’m waffling on a bit here, but does anyone know just WHY the Commonwealth armies designate their parts in arse-about-face order, such as PIN, retaining, pin, axis backsight’ or SCREW, guard, trigger, front?
    First, we ask what it is? Answer, A pin
    Second, what sort of pin? A retaining pin
    Third, what does it retain? An axis pin
    Fourthly, an axis pin for what? An axis pin for a backsight
    The same applies to our SCREW, Guard, trigger front. Simple isn’t it?

    I’d like you to have on your bench, the bare body and barrel of the rifle, upside down, and most importantly, without the foresight protectors. Now, if you’re handy, you’ll have a block of wood across the bench on which straddles the charger guide bridge. Because if you don’t, you’re going to bend the backsight adjusting knob and the battle sight means you won’t hold the rifle still. Or better still, just take the sight off.

    Take the new fore-end and holding it with the muzzle end against the foresight block band rotate the fore-end back and down onto the body against the front edge of the butt socket and hopefully, this is where it will stop and sit proud because the ‘draws’ will be proud and interfere with the fit. The DRAWS are the two shoulders at the REAR of the blocks in which the magazine catch and sear are pinned. FIND and identify those two important features and notice that they are angled backwards and the faces are almost, but not quite, parallel with the inside face of the butt socket. Almost parallel I said, but really, the angle decreases. These ‘draws’ are also known among Armourers as the ‘SEAR LUGS’.

    Mark these draws with a dab of engineers blue and as you rotate the fore-end down, CAREFULLY, and with a sharp wood chisel, slice a gnats knacker off the surface (that’s an Armourers technical phrase for a few thousandths of an inch or the slightest sliver) at a time until the fore-end is starting to be pulled to the rear by the action of the draws pulling it and it being tightened against the butt socket. This is probably the most crucial part of the whole operation. When you tap it down under hand slapping pressure, you’ll feel the fore-end starting to tighten up and you might be tempted to loosen it by lifting it away at the muzzle.

    DO NOT DO THIS. Repeat after me again - DO NOT LIFT THE FORE-END AWAY AT THE MUZZLE. Not now, not tomorrow, not EVER. It is only EVER tapped free downwards, at the rear, by finger pressure or tapping it downwards and free with a wooden drift against the top left and right edges of the fore-end. Thus, releasing it from the grip of the draws and the butt socket. This should tell you something. If your fore-end can be rotated free by lifting it away at the muzzle, then it’s well and truly shagged. That’s another REME technical term this time, meaning ‘ ….somewhat worn out!’

    Now for the muzzle. This is where fact differs from fancy. Of all the new fangled methods of fitting fore-ends, with mastic this or rubber mounted that spring loaded wotsits or what-jer-ma-flik thingies that some have tried ….., some who really ought to know better incidentally, none of these methods has EVER been proved to out shoot a properly set up No4. And, to prove the point, not one other method ever got past the first trial when it came to out shooting the No4T. Yes, the muzzle, When you’ve got the back end fitted perfectly, this is what the good EMER says about the muzzle
    ‘The barrel must be absolutely clear for its whole length except for that described for the reinforce (we’ll come to that bit in a few moments). At the muzzle, it should bear for the full length (that’s about 2” or so) along the raised muzzle seating of the fore-end, for approx .3” of its radial width. Apart from this bearing, the barrel will be clear of the fore-end all around for a minimum of .020” and free of all other influence.

    The weight required to lift the barrel from this muzzle seating should be between 3 and 7 lbs. If the weight is below this, the barrel bearing at the reinforce should be lowered. Notice that! The front trigger guard screw is the pivot when fitting fore-ends. If the weight is above this, then the body and reinforce seating will be raised.

    Well, we’ve done the rear end, we’ve done the muzzle and we’ve talked about lowering or raising the body and reinforce bearings ….., but where are they?

    By now, you should have the fore-end sitting down on the body and a nice tight snug fit. There must not be ANY PLAY of the fore-end between the butt socket and the draws. That’s got that bit out of the way. You have also got the fore-end sitting down and bearing evenly at the muzzle. Now it’s time to smear a smidgin (an engineering phrase now, indicating just a tiny bit …..) of engineers blue onto the underside of the front of the body, where it houses the front trigger guard screw spigot and extend the blue backwards along the thin walls of the magazine housing for a distance of not less than 1.9” from the front of the body. This blued surface MUST ‘….bear evenly throughout its surface and at the same time, the fore-end must be clear of either side of the barrel socket of the body’. That is to say, the fore-end must only touch the front face of the butt socket, the draws and the front of the body extending for 1.9” rearwards, equally on both sides.

    But before you get this bearing surface in the body you’ll find that the reinforce of the barrel is starting to bear. Remember how we very carefully chiseled of a gnats knacker or a sliver at a time from the draws? This is what you have to do with the wood at the underside of the barrel reinforce. Just a sliver away at a time being patient all the time until, and I’ll quote ….. ‘There must be a good bearing at the reinforce, extending for its full length and not less that a third of its radial width (we say that, that equates to just a smidgin over ½” radially …). It is important that this bearing is in the centre of the reinforce seating of the fore-end. The sides must be entirely clear of the barrel.

    Some fore-ends have been found to be too low at the reinforce bearing and there’s no way of checking these before you start! Many came to light during the L42 programme and ….., I’m going off the subject, but just remember the ‘plate, reinforce’ saga! If your is low, then the only answer is to chisel it out and insert a hardwood insert….. or start again or just commit suicide………. The same applies to warped fore-ends I’m afraid and while I’ve come across a few, they were inevitably scrap

    From all of this, your fore-end is perfectly fitted. The handguards must have no bearing on the barrel whatsoever. That is to say, a good,.020” clearance all round.

    Now it’s time to fit the trigger guard and Screw, rear, tie, fore-end if you have a Mk1/2 or 1/3. There’s a good chance that the rear of the trigger guard will foul due to the height of the new wood. If that’s the case, then simply scrape away the wood inside its seating to allow it to seat correctly all the way to the front. The trigger guard should not spring at the rear or front….., NO it shouldn’t! If it was meant to, it’d be made of spring steel! Now for a little tip. The COLLAR. You MUST have a collar and spring washer. This is what WE used to do. Put the front trigger guard screw into the trigger guard and body WITHOUT the washer or collar. Reverse it (that’s anti-clockwise …..) until you hear it click over the start thread and tighten it BUT COUNT THE TURNS UNTIL IT TIGHTENS AND LOCKS. Say, that it’s 7 ¼ turns to lock. Now do this with the collar fitted if it’s now, say 8 ½ turns, shorten the collar, a smidgin at a time, until the screw tightens up at exactly 7 ¼ turns. That way, you KNOW that the screw is tight, the fore-end is tight between the trigger guard and the screw and you are not crushing the living daylights out of the fore-end. And if it feels a little loose in a years time, then you can safely turn a few thou off the collar.

    Now there’s a slight relaxation to this rule. If, after a days shooting, a gap between the rear of the fore-end and face of the butt socket opens up, up to .010”, then this is acceptable providing that there’s no noticeable play fore and aft (there won’t be if you’ve adjusted the collar correctly …) and the correct bearings at the reinforce, draws, magazine well sides and muzzle are intact.

    But here’s a last test. Once the fore-end is fitted and clamped up. Get the rifle in the right hand, butt on the floor and with the thumb, press the muzzle up. Is it free? Does it return naturally and centrally? Now do the same left and right. Does it return to the centre naturally? It should. Is it really free of all influence of the handguards? It MUST be. Here’s a little test we used to use. We’d get a piece of thin cloth such as a ribbon, about ½” wide and 6” long and tie a weight, something like a small spanner to it. Then slide an inch or so of the other end between the fore-end and the barrel at the muzzle. After a couple of shots the cloth will fall out proving that the barrel does indeed whip as it vibrates, lifts and allows the weight to fall free
    There, that’s very basically, it. Incidentally, this is also the correct method of fitting up the No5 fore-end too except that the barrel is fully floating at the muzzle. I have often wondered to myself whether it’d tighten the No5 accuracy group up if it did have a 3 to 7lb muzzle bearing. Why doesn’t someone try and let us know the results.
    -------

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    Excellent, Thanks Lou!

    There is a lot of reading there and it certainly describes it in better detail than the Skennertonicon book on accurizing and shooting enfields that I just (finally) recieved in the mail. Now the hard part (Its a shame that AIM are all out of their Paki No4 wood in case I bugger up)
    Thanks for the assist.

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    I just read Laidlericon's instructions and my head hurts.

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