velocity check on airlite .357

thomis · September 9, 2012, 08:43 PM

Hi-
Working up some loads for the airlite 340pd. thought i would post one or two youtube clips. love the blue dot. actually competed very well with the classic h110 and 2400 magnum powders. cheers fellas!

thomis

IllinoisCoyoteHunter · September 9, 2012, 08:50 PM

Seems to me like you are awfully close to your chrono. Try moving back to 10', which is where I think the manufacturer suggests. You are .2 grains over alliant's data and are getting over 200 fps more with a barrel under 2"????? I bet the chrono is picking up your muzzle blast.

If not, I would be SHOCKED!

thomis · September 9, 2012, 09:22 PM

the numbers are awfully consistent to be muzzle blast numbers, which are usually erratic. when the F1 detects muzzle blast it throws an err, which you can see in a couple of the vids.

IllinoisCoyoteHunter · September 9, 2012, 09:43 PM

I would think that muzzle blasts are generally consistent within a given load..

Just trying to debunk something that goes against everything I know about reloading, barrel length vs velocity, the barrels used in obtaining velocity figures for powder manufacturers, etc.

I have seen crazier things though...

If I were you, I would move back just a bit and shoot those same loads over the chrono....just for the sake of getting at least a five shot string you can take an average from (where they all register.)

Just my two cents. If you do so please let us know. I am intrigued by this situation!

September 9, 2012, 08:43 PM	#1
thomis Junior Member Join Date: January 20, 2009 Location: Central NC Posts: 6	velocity check on airlite .357 Hi- Working up some loads for the airlite 340pd. thought i would post one or two youtube clips. love the blue dot. actually competed very well with the classic h110 and 2400 magnum powders. cheers fellas! thomis

September 9, 2012, 08:50 PM	#2
IllinoisCoyoteHunter Senior Member Join Date: December 23, 2008 Location: Southern Illinois Posts: 1,527	Seems to me like you are awfully close to your chrono. Try moving back to 10', which is where I think the manufacturer suggests. You are .2 grains over alliant's data and are getting over 200 fps more with a barrel under 2"????? I bet the chrono is picking up your muzzle blast. If not, I would be SHOCKED! __________________ ~~IllinoisCoyoteHunter~~ ~NRA LIFE MEMBER~ ~NRA CERTIFIED INSTRUCTOR~ Last edited by IllinoisCoyoteHunter; September 9, 2012 at 08:55 PM.

September 9, 2012, 09:43 PM	#4
IllinoisCoyoteHunter Senior Member Join Date: December 23, 2008 Location: Southern Illinois Posts: 1,527	I would think that muzzle blasts are generally consistent within a given load.. Just trying to debunk something that goes against everything I know about reloading, barrel length vs velocity, the barrels used in obtaining velocity figures for powder manufacturers, etc. I have seen crazier things though... If I were you, I would move back just a bit and shoot those same loads over the chrono....just for the sake of getting at least a five shot string you can take an average from (where they all register.) Just my two cents. If you do so please let us know. I am intrigued by this situation! __________________ ~~IllinoisCoyoteHunter~~ ~NRA LIFE MEMBER~ ~NRA CERTIFIED INSTRUCTOR~

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September 9, 2012, 09:22 PM	#3
thomis Junior Member Join Date: January 20, 2009 Location: Central NC Posts: 6	the numbers are awfully consistent to be muzzle blast numbers, which are usually erratic. when the F1 detects muzzle blast it throws an err, which you can see in a couple of the vids.