You use plug screws to plug up the holes from when the ifle was drilled and tapped......unless you want to use a scope on it.
The Damned Crack is the crack that develops over time at the rear end of the forestock on many Lee-Enfield rifles. It accounts for MUCH of the poor shooting that people experience with these rifles. A Lee-Enfield with a good barrel is nearly always capable of 1.5 MOA or better. If your rifle shoots 6-inch groups at 100, likely you have The Damned Crack. Just something to watch out for. A sure inication is when a rifle suddenly starts shooting very badly.
The rifle has a very light barrel. It was designed to have a full stock to house and support this barrel. When the wood was cu to mak the rifle into a sporter, it left the barrel hanging out in mid-air and waving around when the rifle is fired. For best accuracy, it wants support at 3 points, one of which is no longer there. It needs suport at the chamber, at the Middle Band and at the Muzzle. Sportered rifles no longer have the Muzzle support.
I have here a 1918 NRF Lee-Enfield which is absolutely untouched. With my test loads, it shoots exactly 1 inch at 100 yards, off the sandbags, iron sights. Pretty decent for a 93-year-old rifle. I also have a 1918 Lithgow which needed the stock worked over (it had The Damned Crack); from shooting a 14-inch group at 100 yards, it now shoots just half an inch. No scope, but a lot of sandbags. Your rifle ought to shoot very well; if it doesn't, then there is something wrong and now you have an idea on how to start fixing it.
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