There is a search feature, and it can provide some good reading.
Quick search of "gunsmithing" using "7.62x39" :
https://www.canadiangunnutz.com/forum/search.php?searchid=34385380
Has anybody done an article on converting Lee Enfield No 4 Mk1 303 to 7.62x39 in CGN forum?
I'm was looking at doing it too. But after doing a lot of looking around...and thinking about it..this is what I've come up with... just down load...so uses a 123 gr from a 7.62x39 or go a bit further, and down load to a 32 cal handgun bullet...way easier. and it's still a high power 303 round ,rifle. Seems to make sense. It'll take awhile to get the powder loads right , but that's the half fun of it.
I did. Tons of work.
First, I actually did change the barrel. Next. You need to change the bolt head, finally, you need to create an adapter for mags. I had a gunsmith in US to make one. Note, it would not take double stack mags, but single stack mags would work easily.
Alright....^^^it does look sweat!!
mkrainc..if I would have know that you had done , one of these conversion, before a sent you the rear No5 sight...then a probable...would have owned you money!!Nice work!!