GuitarmanNick
Ultimate Member
My 1:7 twist barrels produce excellent groups with 55, 62, or 69 grain projectiles. My handloads are more accurate than factory produced fodder. Projectile length, not weight is the real determining factor in selecting the best twist rate.
I zero @ 25 yards using my 69 grain loads. This puts me back on around 260 yards depending on the rifle and gives a fairly flat trajectory out to 300 yards without holding over.
When shooting other loads, the elevation is usually pretty close their POI.
I use Strelok+ ballistic calculator when I really want to be precise. If ever needed for defense, any weight bullet will work well with no calculation required out to 300 yards.
My inventory includes 55 and 62 grain 5.56 NATO. Accuracy and POI are about the same with either.
Each barrel is unique so the OP should do some testing to find what ammo his likes best.
I zero @ 25 yards using my 69 grain loads. This puts me back on around 260 yards depending on the rifle and gives a fairly flat trajectory out to 300 yards without holding over.
When shooting other loads, the elevation is usually pretty close their POI.
I use Strelok+ ballistic calculator when I really want to be precise. If ever needed for defense, any weight bullet will work well with no calculation required out to 300 yards.
My inventory includes 55 and 62 grain 5.56 NATO. Accuracy and POI are about the same with either.
Each barrel is unique so the OP should do some testing to find what ammo his likes best.