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  #196  
Old 04-09-2020, 09:33 PM
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about chronographs all will say a +or- a certain %. in life you usually get what you pay for, same holds true with Walmart computers in analyzing rimfire tuning. marty
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  #197  
Old 04-10-2020, 07:50 AM
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I recently bought a FX pocket chronograph and have shot over it about four times, probably 800 rounds or so and have used my Beta Master Chrony at the same time and I really like the FX.

Supposed to be for air rifles but I have never had it miss a shot using standard velocity 22LR ammo and it is MUCH easier to set up than the Chrony

https://fxairguns.com/accessories/pocket-chronograph/

I also got the mount to rubber band it to the underside of the barrel and honestly it works really well. If you want to know why that last shot went out of the group...this will tell you if it was velocity or the loose nut behind the butt.
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  #198  
Old 04-10-2020, 12:40 PM
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By attaching anything to the muzzle, will change the tune of the rifle.
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  #199  
Old 04-29-2020, 09:46 PM
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when tuning with a lite tuner it's always the velocity of the nod and why closer to the muzzle is best. different from speed of higher frequency vibrations with a regular tuner. marty
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  #200  
Old 04-29-2020, 11:07 PM
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Bare barrel has a particular fundamental frequency. Any weight you add, light, medium, heavy, changes this to a lower frequency. The more weight, the larger the change. So your statement is a little confusing.
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  #201  
Old 04-30-2020, 07:11 PM
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Originally Posted by _Shorty View Post
Bare barrel has a particular fundamental frequency. Any weight you add, light, medium, heavy, changes this to a lower frequency. The more weight, the larger the change. So your statement is a little confusing.
shorty, once the nod/flip is slowed too much it will change direction. marty
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  #202  
Old 04-30-2020, 11:31 PM
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Sure, there is a periodic vibration, and you alter the period to your advantage. Slow it down just enough to ride the upwards portion of the wave. Slow it down more and you'll breach the crest, and begin riding the downwards portion. Slow it down even more and you'll be on an upward slope again. Slow it down even more than that and you'll once again be on a downward slope. Repeat until gun weighs 20 lbs. and you no longer want anything to do with it.
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  #203  
Old 05-01-2020, 07:34 PM
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shorty, not what I'm talking about. here is the single best example of speed vs. velocity in any study. Dr. Kolbe clearly shows positive compensation via the flip, however scroll to the bottom of this article looking at the 3 10 shot groups at 50 meters. clearly group 1 compare to groups 2&3 that the flip velocity has changed and imop is slightly slow. obvious the speed is there but the velocity has slowed that the grouping is slightly right. marty
http://www.geoffrey-kolbe.com/articl...g_a_barrel.htm

perfect example in the difference between speed and velocity.
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  #204  
Old 05-02-2020, 08:49 AM
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Pretty sure we're both saying the same thing, and you're just not picking up what I'm laying down. Especially since what I just said is the same thing as what your link says.
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  #205  
Old 05-02-2020, 01:52 PM
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No dog in the discussion. But speed = distance/time; velocity=speed+direction; acceleration=rate of change of speed.

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  #206  
Old 05-02-2020, 01:57 PM
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I think he's just using "velocity" as a shortcut for "how quickly the angle of the barrel is changing." And speed relating to speed of the bullet. Not the best usage of terms to relate his thinking with, since they're practically the same. Took me a second to figure out what he meant because of that.
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  #207  
Old 05-02-2020, 09:42 PM
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Quote:
Originally Posted by _Shorty View Post
I think he's just using "velocity" as a shortcut for "how quickly the angle of the barrel is changing." And speed relating to speed of the bullet. Not the best usage of terms to relate his thinking with, since they're practically the same. Took me a second to figure out what he meant because of that.
Shorty, as the great Yogi Berra might say, speed and velocity are the same, except when velocity is different...…..marty

by the way, Shorty on this forum Earnest was the first to coin. " time in the barrel"
another by the way, Douglas coined "hunnert" ie hundred
another by the way, Earnest was the first to explain 2 speed tunning a "hunnert" ways with ammo that had the same velocity. Earnest could not help that few had the mental capacity to understand....sure do miss the old suhl forum...have a good night. https://www.youtube.com/watch?v=oxHnRfhDmrk
marty

Last edited by earnest; 05-02-2020 at 09:57 PM.
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  #208  
Old 05-03-2020, 08:32 AM
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Quote:
Originally Posted by earnest View Post
Shorty, as the great Yogi Berra might say, speed and velocity are the same, except when velocity is different.....marty

by the way, Shorty on this forum Earnest was the first to coin. " time in the barrel"
another by the way, Douglas coined "hunnert" ie hundred
another by the way, Earnest was the first to explain 2 speed tunning a "hunnert" ways with ammo that had the same velocity. Earnest could not help that few had the mental capacity to understand....sure do miss the old suhl forum...have a good night. https://www.youtube.com/watch?v=oxHnRfhDmrk
marty
Hey Marty, Love that song!
just about 3-oz.is needed for a 21"x 1"diameter using a Time-Super Tuner. done on a pistol.

Lee
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  #209  
Old 05-10-2020, 09:44 PM
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Originally Posted by Hi-NV Shooter View Post
Hey Marty, Love that song!
just about 3-oz.is needed for a 21"x 1"diameter using a Time-Super Tuner. done on a pistol.

Lee
Lee, what pistol? maybe a better tune. marty
https://www.youtube.com/watch?v=d1yfX6VnrSU
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  #210  
Old 05-11-2020, 07:19 AM
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Quote:
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Lee, what pistol? maybe a better tune. marty
https://www.youtube.com/watch?v=d1yfX6VnrSU
Marty,

It is one of them TC, barrel is a Bru-berry?


Lee
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