6.5 Creedmoor and Berger 144 Hybrid

[Popsbengo]

I managed to shoot my new 6.5CM for the first time today with the new Berger 144 Hybrids.  No load data was available that I could find so I started at a moderate 140gr Berger load in small primer Lapua brass.

Early days with new brass and a conservative COAL giving me 20 thou jump.

30" 1:8 5R barrel.

RS62 at 44gr with CCI BR4 primer:   Five shot average velocity of 2880 fps.(ES of 11) gave me a  0.4 MOA group (a bit too breezy for 'perfect' development conditions).  I think I can tweek the group tighter by playing with jump and ± 1/10gr increments.

44.5gr group was opening up,  I had no pressure signs so I may try going further up in load to find a node at higher velocity however I'm getting mildly compressed powder at 44gr

I've not used RS powders but I must say I was impressed with how clean it burns.

[Leeman]

Hi Pops,

If you have used the 140 Hybrids (or any other 140 class bullet) how do these 144's compare to them in terms of seating depth/bearing surface in the case neck?

The Berger website provides dimensions that would indicate base to ogive would be similar but would be good to get real world opinion before I try a box.

Thanks,

Richard

[Popsbengo]

5 minutes ago, Leeman said:

Hi Pops,

If you have used the 140 Hybrids (or any other 140 class bullet) how do these 144's compare to them in terms of seating depth/bearing surface in the case neck?

The Berger website provides dimensions that would indicate base to ogive would be similar but would be good to get real world opinion before I try a box.

Thanks,

Richard

Hi Richard,  I've not loaded 140 Bergers so I can't help you there mate.  I was very impressed with the 144 so I'll stick with them and develop an optimised load - I'm not one for jumping around trying different bullet combos.  They are expensive but I like to keep my wallet light 😁

[Leeman]

OK Pops,

Thanks anyway.