uvausmc
Member
I recently sighted in my Savage 12LRP in 6.5 Creedmoor with a 24" barrel. I sighted it in factory Hornady 140gr A-Max ammo. The box states the velocity is 2710fps from a 24" barrel. I know factory velocity claims are usually off, but I chronographed this stuff and I got an avg velocity of 2543 fps with std. dev. of 18. I emailed Hornady to see if they had an answer as to why I was getting almost 200fps slower than the claimed vel. Their response was: "it honestly sounds like you have a slow bbl on the rifle." :banghead:
Is it just me or does this sound like BS response? I know all barrels shoot differently and they test ammo in pressure barrels so they are going to get high velocities but this seems like a big difference. The barrel is still brand new and I'm getting 0.25-.40" 3-shot groups @100 but they are opening up to about 1" with 5 shots.
Here is what I sent Hornady:
"I am writing to question some of the velocity claims on your 6.5 Creedmoor 140gr A-Max ammo (#81494). I shot 10 rounds of this ammo from my Savage Model 12 with a 24" target barrel over my chronograph and only got an average velocity of 2534 fps vs. the 2710 from a 24" barrel stated on the box. Std. dev. was 18. The conditions I was shooting were 75 degrees, sunny, and 60-70% humidity. I was at approximately 100 feet above sea level. I was disappointed to see the nearly 200 fps difference in the velocities. This difference will obviously have a major effect on long range ballistics. Can you explain this difference in advertised velocity vs. actual velocity?"
Is it just me or does this sound like BS response? I know all barrels shoot differently and they test ammo in pressure barrels so they are going to get high velocities but this seems like a big difference. The barrel is still brand new and I'm getting 0.25-.40" 3-shot groups @100 but they are opening up to about 1" with 5 shots.
Here is what I sent Hornady:
"I am writing to question some of the velocity claims on your 6.5 Creedmoor 140gr A-Max ammo (#81494). I shot 10 rounds of this ammo from my Savage Model 12 with a 24" target barrel over my chronograph and only got an average velocity of 2534 fps vs. the 2710 from a 24" barrel stated on the box. Std. dev. was 18. The conditions I was shooting were 75 degrees, sunny, and 60-70% humidity. I was at approximately 100 feet above sea level. I was disappointed to see the nearly 200 fps difference in the velocities. This difference will obviously have a major effect on long range ballistics. Can you explain this difference in advertised velocity vs. actual velocity?"