I don't take my press anywhere.I make up some test loads and then go to the range and see if the gun likes them and if there are any pressure signs.In your case,I would probably loadthree rounds with 62gr,three with 63gr,three with 64gr,three with 65 gr and three with 66gr.Fire the 62 gr loads first watching for pressure signs.If everything looks good,let the barrel cool fully and fire the 63 gr loads,then 64gr,then 65gr,and finally the 66gr loads,letting the barrel cool fully between each group and watching for pressure signs with every shot.