Thanks shotgunjones for the info. Karl Graebner thanks for the info as well, i really dont have another choice, i am a 30" lover and besides the crap turkish guns this is what i found as 30". The only thing that mattered for me, was to learn if the velocity loss will make me problems in game shooting especially higher birds? If it's not i will go for it with its consequences such as the noise and cleaning.

Awaiting your answers

Thank you

Kem