10-20-2011, 06:11 PM
I love Hornady products.
I have the Hornady's 8th edition reloading book next to me. A 140gr bullet both 24in barrel 7.5 twist rate Primer WSR Cases Hornady top speed with .260 is 2700fps with all 8 powder brand listed.
6.5 creedmoor is 2725fps with 4 powder brand listed out of 13. 6.5 Creedmoor is 2700fps with 7 powder brand listed out of 13. 6.5 Creedmoor is 2650fps with 10 out of 13. And 2600fps with 13 out of 13. From the same Hornady book 6.5 Creedmoor with superformance powder is 44.7gr for a top speed of 2700fps. Similar data with 129gr, 160gr, 123gr and 95-100gr bullets. Up here in Canada the 6.5 Creemore is gone from the stores.
My choice .260R all the way and I will not look behing my shoulder. Case closed for me.
Editing: Before someone ask, the 6.5 Grendel was tested with a 14.5 barrel on an AR platform. They did tested the 140gr bullets but Quote We found that in our 14.5in test barrel that muzzle velocities of the 140gr bullets dipped low enough to preclude adequate terminal performance and for that reason we chose not to include data for the 140gr bullets. end of quote.
I have the Hornady's 8th edition reloading book next to me. A 140gr bullet both 24in barrel 7.5 twist rate Primer WSR Cases Hornady top speed with .260 is 2700fps with all 8 powder brand listed.
6.5 creedmoor is 2725fps with 4 powder brand listed out of 13. 6.5 Creedmoor is 2700fps with 7 powder brand listed out of 13. 6.5 Creedmoor is 2650fps with 10 out of 13. And 2600fps with 13 out of 13. From the same Hornady book 6.5 Creedmoor with superformance powder is 44.7gr for a top speed of 2700fps. Similar data with 129gr, 160gr, 123gr and 95-100gr bullets. Up here in Canada the 6.5 Creemore is gone from the stores.
My choice .260R all the way and I will not look behing my shoulder. Case closed for me.
Editing: Before someone ask, the 6.5 Grendel was tested with a 14.5 barrel on an AR platform. They did tested the 140gr bullets but Quote We found that in our 14.5in test barrel that muzzle velocities of the 140gr bullets dipped low enough to preclude adequate terminal performance and for that reason we chose not to include data for the 140gr bullets. end of quote.