For some time now Ive been seeing folk talking about various torches and pros and cons of them (and the cost!!)
If you want a torch thats good for shooting out to 250yds and good for 'eyes' out to 400yds for less than £25 read on......
Buy a cree 501b torch from evilbay....while you're at it get a red led one too. (about £6 for the white and £8 for the red led version)
Dont be tempted to buy apparently brighter torches such as an xlm5 or t6.
There is a gent on pigeonwatch called daveg that sells aspherical lens called an ahorton lens (£13 perfect, £8 slight seconds) buy a couple, one for each torch.
When your evilbay torches arrive (you did order batteries and a charger too didnt you?) unscrew the top and unscrew the retaining 'washer' that holds the torch front glass in place and remove the glass.
Forgot to add, you need to cut the reflector down by about 6mm and blacken the reflector with a gem marker.
pop the ahorton lens in its place and screw the retaining washer back in about a 1/4 of the way.
turn on the torch and while holding it upright and see if you can clearly make out the configuration of the led on the ceiling. If you can, good, glue the glass in place with a smear or araldite. If not adjust the retaining washer up/down until the led is clear on the ceiling then glue the lens in.
You can buy a fancy drop in thats made of copper instead of the one that comes with the torch but Ive had no overheating issues with mine and the torches are so cheap its easy to keep a couple in stock if one does burn out and just replace the lens part.
The white torch will give a good beam out to at least 250yds and the red is good for 200yds (I reckon a lot further for both but I'm being conservative here)
If you wish you can get an extension tube for a second battery to give several hours continuous use and a flying pressure switch for having one mounted on your rifle, both items only a few pounds.
Red AND green led torch
Batteries (cheaper are available from HK)
Standard torch and other inserts
Remote pressure switch