GB, the reason why I want this done is because I want to be able to shoot heavier bullets, in the 340-380 grs range. I'm taking my FA to South-Africa, and if my wallet permits it, I will try to take down cape buffalo. I've talked to Veral at LBT, and those WFNs are the best bullets for the job. And to my knowledge there aren't any other bullet on the market with the same weight and which let you use the same amount of powder. I need all the juice I can get.
And to be perfectly honest, there is also the reason that I feel my FA is slightly out of spec, and I can't stand it. It's just in my nature, I'm the kind of guy that can actually lose sleep over a thing like this. I've read that having throats just a tad bigger than the bore is the ideal scenario and will work better. And my bore is .452 so... If anyone know any medication that might help, don't be afraid to say so!

I will try to size the WFNs down to .451 before I do anything about my cylinder. If they then chamber without any problems, and accuracy doesn't suffer, I guess I'll stick with my cylinder as it is. Do you think opening the throats will do more harm than good? I will never do anything that might damage my revolver in any way, I was just thinking that opening the throats will take care of all my problems.
Sorry for being difficult.
Anyway, I've done some measuring and testing on my cylinder. The tightest spot in the throats seems to be from the face, I always assumed throats were tighter in the rear. What is the official standard from FA?
Thanks for still reading my posts!
Humbo