bullet weight and impact report

[BornAgainBullseye]

In my .308 1:10 twist I have just shot a few different weight bullets in one sitting. Everything under 155 grain has impacted 1 inch left of everything else. The 155 AMAX is by far the flattest out to 500 yards in my gun. Does anybody have a clue why the lighter bullets impact where they do. I wouldn't think spin drift would be a factor but whatever. My favorite is the 165 nosler ballistic tip as it is almost as flat as the 155 but carries more energy. anyone have an idea about the left impact on the lightweights fell free to chime in

 

[rcmodel]

Every bullet weight generally shoots to a different POI.

It can be spectacularly different in some rifles, and not so much in others.

It has to do with barrel harmonics, stock bedding, etc.

You can't ever expect all bullet weights to shoot the same in any rifle.

rc