British 303 - Help

[Contenderizer]

A friend of mine recently gave me a sporterized British 303. The markings on the receiver are: "No4MK 2(F)FTR" Along with the gun he also gave me a ton of old ammo that he says has corrosive primers. Can anyone help me with the procedure of removing the bolt? I would prefer to do so when cleaning the gun after shooting this old ammo. Perhaps someone knows of a source for take-down info. Thanks for your help and advice, and, yes, I have great friends!