Before using a firearm to CTB, I believe it is important for people to actually see the after effects of a shotgun to the head. I know there are people who survived with horrible facial injuries, but after watching videos such as the Ronnie McNutt suicide and others, I'm not sure much precision is needed (2021 studies show that 90% of suicide attempts using a gun were successful - I haven't studied the findings that closely but the vast majority of survivals were non-head shots). However, for complete transparency, I have firearms but will not use them to CTB because I gave my word I would not. For me, it's probably the various pain killers I managed to hoard from various surgeries, mixed with alcohol. Also, I find guns to be some what "impulsive" and CTBing is something that should be a very deliberative decision.