Zul, just a word in your ears. It's called Base Rim Diameter......... It's simplicity itself to convert any centre fire rifle to fire any centre fire cartridge (within the safety parameters of course). The DIFFICULT bit is the rest of the must-haves. The UNLOAD (breech opening) UNLOCK (mechanical safety) EXTRACT, EJECT, COCK, FEED, LOAD and LOCK. Once you take all of those into account and try to fit them into the equation PLUS an action that was designed for a larg diameter base rim dia .303" cartridge, your problems become almost insurmountable.

Even the smaller diameter 7.62mm magazine conversion was a bit hit and miss until it was discovered that........ I won't bore you.......

I suspect that the reason this thread abruptly ceased some considerable time ago is because it's stalled through defeat and waning interest and............ and............ You COULD do it but only if a) you are already a very experienced mech/engineer/fitter-turner with a high degree of same as an Armourer, b) be prepared to spend at least a year and c) spend a LOT of money.

How do I know this............?