I used Varget 25.6gr, primer wsr, OAL 2.20 in. with 62gr fmjbt bullet. I have the same twist rate 1:8. Iron sights at 50yrds 1.25 inch groups. I have not worked my way out to 100yds with this one yet. The olympic ammo has a greater spread to 3 inches. I don't know why?
