Yes, you can get 9mm to Major....but you would only want to do that in Open class. All Production is scored Minor anyhow and in Limited and Limited 10 you need .40 caliber or larger to be scored Major....no matter how hard you push the the 9mm.
Also, as alluded to before, in Limited/L-10 the diameter must be at least .400(edited). 9mm major is definitely a "wildcat" round and isn't very common. .38 Super is apparently a lot more forgiving to reload.
Also, as alluded to before, in Limited/L-10 the diameter must be at least .300. 9mm major is definitely a "wildcat" round and isn't very common. .38 Super is apparently a lot more forgiving to reload.
If you are loading 9x19 Major for a 1911 doublestack its a non issue but for a Glock there you have to play quite a bit since you are limited to a 1.165 OAL.