6.5 prc / 300 prc / 7 prc barrel test

[Barbourcreek]

Testing results of cutting 26 inch barrels down to 18 inch barrels in 7 PRC, 300 PRC and 6.5 PRC I ran these numbers from station pressure on site

Alabama 30 inches of mercury 275 feet above sea level and then hunting near Fort Smith Montana at 26.7 inches of mercury or 3200 feet above sea level 53° 70% humidity ( real hunting elevation we hunt at) Crow reservation

Video coming soon (revised)
I made this chart for my students for retained velocity of 1600 ft./s left on impact of an animal using a cup and core bullet

Your gun may be faster or slower all barrels are different
Lab Radar was used for velocities use it how ever it can help you.

Station pressure verification on site in Montana
barrels were donated by Benchmark and action by Joel Russo from Terminus

 

[TheZigor]

Thank you so much for complaining all of this data.

 

[Jakeweb09]

Definitely interesting. You've got 175 hornady at 2664 at 18" I've got a load for 180 hybrid in my 18" 7 prc at 2663! Ran them to about 2730 without issue but why when it's already caring that velocity beyond my hunting ranges.

 

[Earnhardt]

Great thread man!

 

[twest21]

Definitely interesting. You've got 175 hornady at 2664 at 18" I've got a load for 180 hybrid in my 18" 7 prc at 2663! Ran them to about 2730 without issue but why when it's already caring that velocity beyond my hunting ranges.

Are you running suppressed with those velocities? I'm not sure if it would make a difference, but I'm curious. Thx!

 

[Barbourcreek]

Are you running suppressed with those velocities? I'm not sure if it would make a difference, but I'm curious. Thx!

No, those were all unsuppressed

 

[twest21]

No, those were all unsuppressed

Thanks!

 

[ReconFister]

Great info, thank you

 

[Wilderness Blacktail]

I went and looked for this video but couldnt find it. Is it still up? I did see the 6.5Creedmoor 26-18" vid which is also helpful.

 

[crashlanding]

It may have been taken down, I went looking for it a few months ago and it was gone then.

 

[highdrum]

I'm curious, is this data set taken from one round per barrel length? 3 or 5? Oem ammo hasn't been great since covid powder shortage.

 

[Barbourcreek]

3 round

 

[pavementends]

Thank you for the effort. This should answer a lot of questions. While we "know" all barrels are different the relationship with length should be similar enough for most purposes. " Affordable chronographs, breaking more hearts than Frankie and Annett."

 

[Longtine88]

Testing results of cutting 26 inch barrels down to 18 inch barrels in 7 PRC, 300 PRC and 6.5 PRC I ran these numbers from station pressure on site

Alabama 30 inches of mercury 275 feet above sea level and then hunting near Fort Smith Montana at 26.7 inches of mercury or 3200 feet above sea level 53° 70% humidity ( real hunting elevation we hunt at) Crow reservation

Video coming soon (revised)
I made this chart for my students for retained velocity of 1600 ft./s left on impact of an animal using a cup and core bullet

Your gun may be faster or slower all barrels are different
Lab Radar was used for velocities use it how ever it can help you.

Station pressure verification on site in Montana
barrels were donated by Benchmark and action by Joel Russo from Terminus View attachment 499709View attachment 499710View attachment 499711

Wow! Great job James. Love seeing post like this. Thanks for what you do and what you have done.