I'm considering re-boring my BSA Lee Enfield N01 to 375 and I have a number of questions that I'd like some help with.

First, has anyone re-bored a LE barrel to 375 and how has it worked out? The muzzle on my 25" cut down original barrel is .668" and I wonder if there is enough meat for a 375 re-bore.

Second, what length does .303 brass turn out to be after fire-forming in a 375-303 chamber?

Third, what cast bullets do 375-303 users tend to favour and with what twists of rifling?

Thanks for your help as I gather more information.