The only real concern I have ever seen posted about boring out a G2 (or 6P as well) is that if one is doing oneself, there is a danger of getting off-center and winding up with part of the wall too thin. I would think anyone offering to bore or selling bored lights should be capable of doing it properly. [Just don't use it for a hammer after boring!]
No worries guys, I appreciate the info and options presented. Still not sure as I’ve gotten to where I’m more into one cell lights whether it’s a 123 primary or 16340 rechargeable or 18650, I just like the sizing and output. Probably end up selling the 6p to fund one of these lol 😅
I had a 6P bored by a reputable CPF modder and the tail section eventually broke off after a few months of use and one drop from about 5 feet onto a concrete floor. Not passing blame on the modder. This person has done a lot of lights for me. Just saying, I will stick to using modern 16650s which seem to run almost as long on the same incan lamps for me.