Thread: AOL gauges? Worth it?

I have done similar after I found something on the net. Lee reloading book tells me that it should be 2.800 in. After I chambered a slightly resized projectile I got 2.850 in, the mag wont allow me to go much past 2.800 but If I go back to the internal mag (i have an aftermarket mag kit for my howa) i can go to about 2.840in. So for accuracys sake, should I work some loads back from 2.840 to 2.800 and see which ones are most accurate? should I do that with different powder weights, or stick to 39.8gn as its a known accurate weight for my rifle/bullet combo. oh and what sort of seating depth increments should i wrok back in? as in, 2.840 - 2.835 - 2.830 - 2.825 etc? or larger increments?