Thread: Which aperture for a lee enfield No4 mk2

Many moons ago, Graham Henry showed me a 303 that he had sporterised, think he even wrote an article in the Rod and Rifle about sporterising the the 303. He had used the small peep sight that is fitted to the rear of the action, the one where you flip it for one distance and turn it over for the other. That may very well be your 300/600 peep. What he did is open up the closest one to 3mm, and carefully reduced the outside of the peep as well so it had a much finer "circle" to look through. He also completely removed the other one so you never got it wrong. And I think he fixed it somehow so it was always standing. He then sighted it for 100 metres, possibly using a higher foresight. He told me the human eye is an amazing thing, being round, if you look through a round hole it will always try to centralise what ever you are looking at. And what ever you are looking through doesnt have to be big or ugly, the finer, less obtrusive the better. And a human eye will always centralise no matter what size hole you are looking through, so you dont lose any ability by opening it out to 3 mm, but you do gain in dull light conditions. He then shot the rifle and was able to shoot 3" groups @ 200 yds no problem.