Low velocities with 6.5 Creedmoor
- Thread starter worrdogg
- Start date
jepp2
Gold $$ Contributor
I only tried it one time in my 6 CM. Velocity was in line with what I expected, but the cases were filthy. And I was over 3,000 fps on the higher loading so I didn't have that much room to increase powder to see if that would clean up the cases.
It’s funny you mentioned this. For what it’s worth, I’m loading new srp Starline with#41’s, Accurate 4350 at 42.4 grains with a 140Nosler CC bullet. Average mv 2668, everything looked good. As usual start low and work up on powder.
That does seem really slow on the speed for some reason.
At the lower end I’m getting only getting 2000s fps
So far on mine just the usual carbon on the neck.
Hodgdon reloading shows up to 43.5 on theA4350. Speer showed a max of 42.5 for the 140 grain bullets for what it’s worth.
Big_Daddy
Gold $$ Contributor
Something is definitely not right with these velocities.
I wish I had more to offer however without being there and getting to see it in person, it is difficult.
I am using the same bullet and H4350 at 42grs and getting 2600+fps.
Last edited:
Petterson brass is the problem, with my experience, it's just too thick. I get my best velocities with Lapua and Starline SRP brass.
AA4350 also won't get as high velocities in the 6.5 CM as H4350, RL16 or RL17 will. I've been shooting the 6.5 CM since 2009 and have tried many types of powder / brass with them.
AA4350 also won't get as high velocities in the 6.5 CM as H4350, RL16 or RL17 will. I've been shooting the 6.5 CM since 2009 and have tried many types of powder / brass with them.
I'm loading 42.0 grains of H4350 into Alpha SRP brass with GMM205 primers and Berger 140 grain VLD through a 26" barrel and getting 2775 fps and that is far from max in my rifle. I would think maybe the chrono needs calibrating or change powder. I've never loaded AA4350, sounds like @Txhillbilly may have the experience with it.
Big_Daddy
Gold $$ Contributor
I have no such issues with my Peterson brass.
I couldn't get within 300 fps of the velocities I get with Lapua or Starline brass with the Peterson brass before high pressure set in.
Big_Daddy
Gold $$ Contributor
I may have to do some experimenting.
I chrono some factory loads and chrono read what claimed on boxes were
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