Obi Wan Reloadi
Member
Evening all,
I have worked up a load in Hornady 130gr CX Win 270. RL19. Bergara B14.
My COL touching the lands was 84.8mm (loctite method), so I set the bullet back to 83 mm (approx 75 thou) as it's copper and the recommendation is to start at 50 thou back.
I get reasonable groups, could be tighter but it's a hunting rifle, not a target one so I'm okay with that.
(I will work in mm here, it's easier to visualize). However, the Hornady Manual recommends the COL should be 3.21 inches - which is 81.534 mm.
This would give a 3.3 mm jump to the lands - that's .13 inches.
That seems a lot - what are your thoughts on this please?
Thanks.
I have worked up a load in Hornady 130gr CX Win 270. RL19. Bergara B14.
My COL touching the lands was 84.8mm (loctite method), so I set the bullet back to 83 mm (approx 75 thou) as it's copper and the recommendation is to start at 50 thou back.
I get reasonable groups, could be tighter but it's a hunting rifle, not a target one so I'm okay with that.
(I will work in mm here, it's easier to visualize). However, the Hornady Manual recommends the COL should be 3.21 inches - which is 81.534 mm.
This would give a 3.3 mm jump to the lands - that's .13 inches.
That seems a lot - what are your thoughts on this please?
Thanks.