Reloading - Bullet Weights

[golfnolsen]

To all the experienced reloaders out there I'm in need of your wisdom.
I measured up my Barnes 180 TSX last night and I grouped their weights so that I could eliminate big variances in my reloads. The question is... Will there be a noticeable difference in point of impact if the weights vary 0.1 grains up or down. (I wouldn't think so, but I had to ask).

I did notice I had some come in at 179.3 up to 180.4. So I ask the same question again... At 1.1 grain difference would that also cause a problem.

(The gun is a SAKO A7 300 WSM. Legend HD 4.5-14x42 scope. PWR Rings. Winchester Nickel Brass. Fed215 Primers. 65.5 Grains of RL-17. Chrony test shows 3150 FPS average. I shoot off a lead sled and try to remember good technique. I understand that the gun will be more accurate than my ability, but the goal is to be as accurate as I can at least once or twice for load development and sighting in my scope. Also I understand in almost all hunting situations it won't matter what I did on paper.)

Thanks in advance for the help. I just want to ease my paranoia.