I am pulling some 150 gr remington core lokt bullets from some old .308 ammo I had laying around (don't have a .308 anymore). I am going to reload them for my K31 (7.5x55, takes .308 bullets). As I pulled them I noticed about every 4th one weighed in about half a gr different (150.5 for most, 150 even for the minority).
Question is...
How much, if at all, would half a grain difference make?
Next question...
I also have a few 180 grn silvertips that I am considering pulling. How much difference would you expect at 100 or 200 yrds if the rifle is sighted for the 150 grn rounds at about 2800 fps? I realize maybe tLittlei.