Thank you Daryl

Yes , you have confirmed it with your informative reply, I am chasing shadows to think seating out to 91 mm will be beneficial , creating more velocity and flat shooting...I am sure it will create more problems than solutions...I would rather focus on trajectory and learn to know my 8x68 caliber rifle better by shooting it out to longer distances....maybe I should keep in mind some wise words a person once said.."why fix an engine while it is not broken?"
I will keep to a standard 8x68 hunting rifle and enjoy it for what it is intended to do...taking longer shots with excellent penetration on larger plains game...

Thank you kindly to all members for your input to provide insight into this subject.

Regards

Gert