start at a mid level book load, go up 1/2 to 1 gr at a time until you hit high pressure, then back off 1-1.5 gr. that's the max load for your rifle. sure you could go by the book and be totally safe but you would miss out on where your rifle performs best. all that data is just a guideline, its the results they got in their rifle on that day under those conditions.
RR