First, do you understand what you are doing?
Monte Carlo stock makes NO difference as to perceived recoil, although it does cost money. There are SIX different butts for the Number 4 Rifle (Bantam, Short, Normal, Long, Extra Long, Extra Extra Long) and one of them is bound to fit you. A properly-FITTING rifle is far more important than a PRETTY rifle.
You are putting out a bullet which is 5 times as heavy as a .22 bullet and you are doing at it twice the speed, therefore 4x the KE/grain. NOTHING you can do will stop it from recoiling like what it is: a battle rifle. I have a lightweight .22 which actually kicks (Stevens Little Scout 14-1/2, 1907) and the only way I can stop it is not to shoot it. It's mathematical and physical law: Newton's Third Law of Motion. What you CAN do is go to 150-grain loadings and put on a buttstock that fits you, then learn to hold it correctly.
I doubt that Parker-Hale would send a rifle out the door with a bad trigger. The "drag" trigger with the double pull and the letoff around 4 to 6 pounds was regarded as a SAFETY FEATURE of the Lee-Enfield rifle, so be careful what you are doing. Quite enough "accidental discharges" from too-light triggers already.
Best scope mount for a Number 4 is the S&K Insta-Mount. It costs money but it is solid. Pay for the mount and rings and it costs you about the same as a drill-and-tap job and a set of bases and rings and the good part is that you haven't wrecked your rifle by drilling holes in the thing. You can assemble the mount in about 10 minutes and you can remove it in the same length of time, harming nothing..... and it is the most SOLID mount made. They stand a little high, but likely you are going to want to put on a big, modern scope anyway, so it will be right down your alley. I have one on my target Number 4, along with a honking great Commie scope and it works fine, shoots better than I do. Mount is FINE, though. If you're trying to save money, get a GAIRLOCHIAN no-gunsmithing mount for the rifle; made by a fellow here on CGN and half the price of the S&K although some need a little fitting. Also SOLID, which is what you need.
For GAWD'S sake, DON'T cut the bayonet lugs off: this will cut the value of the rifle by a full HALF and render it impossible to restore without a full shop and expensive tooling and expensive (and scarce) parts. If you must have a "sporter", why not just buy a sporter? Lots of them around, already wrecked permanently. Almost anybody here can lay hands on a good one in 15 minutes and you'll have what you want without wrecking another. Think about it.
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