CRD Posted May 26, 2015 Report Share Posted May 26, 2015 could anyone please help with some good accurate loads they have used in 6.5 x55 with a 27" barrel 1 in 10 twist Link to comment Share on other sites More sharing options...
basingstokebulletdodger Posted June 10, 2015 Report Share Posted June 10, 2015 could anyone please help with some good accurate loads they have used in 6.5 x55 with a 27" barrel 1 in 10 twist Hi I have a CG63 6.5x55 with a 27" barrel. I have a good load which works great, Lapua Scenar L136gr. Vit N550 41.3gr Link to comment Share on other sites More sharing options...
Laurie Posted June 10, 2015 Report Share Posted June 10, 2015 Are you sure it's a 10-inch twist barrel? The norm is eight for target orientated rifles. If it's a ten, you have a big problem as there's barely a 6.5mm match bullet out there that is fully stabilised in this twist rate. The old and relatively blunt 140gn Sierra MK might suit - it's such a relatively low BC bullet, Litz doesn't cover it in his books on long-range bullets or provide measurements, so I'd have to measure the length of a couple to see what rate they need. If a 10", that SMK aside, the best possibilities would be the Nosler 123gn CC with an Sg around 1.4 in a 10-inch twist and its 140gn big brother at ~1.25 Sg. (1.5 and above are optimal, 1.2-1.5 will shoot OK but with loss of aerodynamic efficiency which has the same effect as reducing BC values.) Link to comment Share on other sites More sharing options...
CRD Posted July 7, 2015 Author Report Share Posted July 7, 2015 Are you sure it's a 10-inch twist barrel? The norm is eight for target orientated rifles. If it's a ten, you have a big problem as there's barely a 6.5mm match bullet out there that is fully stabilised in this twist rate. The old and relatively blunt 140gn Sierra MK might suit - it's such a relatively low BC bullet, Litz doesn't cover it in his books on long-range bullets or provide measurements, so I'd have to measure the length of a couple to see what rate they need. If a 10", that SMK aside, the best possibilities would be the Nosler 123gn CC with an Sg around 1.4 in a 10-inch twist and its 140gn big brother at ~1.25 Sg. (1.5 and above are optimal, 1.2-1.5 will shoot OK but with loss of aerodynamic efficiency which has the same effect as reducing BC values.) Got it all wrong (again)! It is in fact a 9 inch twist barrel Link to comment Share on other sites More sharing options...
CRD Posted July 7, 2015 Author Report Share Posted July 7, 2015 Are you sure it's a 10-inch twist barrel? The norm is eight for target orientated rifles. If it's a ten, you have a big problem as there's barely a 6.5mm match bullet out there that is fully stabilised in this twist rate. The old and relatively blunt 140gn Sierra MK might suit - it's such a relatively low BC bullet, Litz doesn't cover it in his books on long-range bullets or provide measurements, so I'd have to measure the length of a couple to see what rate they need. If a 10", that SMK aside, the best possibilities would be the Nosler 123gn CC with an Sg around 1.4 in a 10-inch twist and its 140gn big brother at ~1.25 Sg. (1.5 and above are optimal, 1.2-1.5 will shoot OK but with loss of aerodynamic efficiency which has the same effect as reducing BC values.) Got it all wrong (again)! It is in fact a 9 inch twist barrel Link to comment Share on other sites More sharing options...
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