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I have proof tested 3 barrels in 12yrs..... Well, REDNECK proof tested LOL!! here's one https://www.youtube.com/watch?v=C0jCEu8yVyY&t=323s

1st problem; So sorry......That is not a link I just underlined it for emphasis, my bad! I am just pointing out that if LUCK put the bullets into the group then it's a fluke, a one-off, not repeatable. But in the real world folks shoot groups with pretty tall ES into the same hole, LOTS of...

Well.... kinda' It's a stop-shot of the BORE at a point in time..... the flippin' whippin' trippin' road that the bullet rode ...... even though the bullet was never THERE on the line.....LOL Schrodingers' Bullets?

Not according to the ballistic Engineers whom I know and trust (there are only three IMO. Vaughn. Childs and Rinker) and not according to McCoy nor to any testing evidence. I once asked Harold Vaughn in person "should I test bullets for stability at 50yds and should I shy away from bullets that...

Also... one other wee thing ;) sorry but I'm in the room now. Just because it's sitting out there......"stability" has absolutely nothing to do with what you're observing. Stability can have no effect on the path of the bullet.

Before Henry gets offended and jumps in to correct me....(Or Boyd asks the elephant-in-the-room question) I said "sapphire pivots" just to sound all cool like dat. I'm prone to hyperole' for effect. Obviously he actually used closed bearings the distribute and support for impact forces.

It was refreshing to see reference to Henry Childs. Henry has long since left this playground but WHATTA' guy. an Engineer of the first water. Henry used to send me pix of his "reference chronograph" and data. Dude hung a log on chains Olde Schoole.... and had to add sapphire pivots because the...

BTW...... this test is tougher than it looks because velocity falls very rapidly near the muzzle and muzzle blast can muddle stuff up. LINEAR arrangements are hard to sort. It is very interesting to map velocity drop over 3ft-4ft-6ft (I kinda' expected them to be closer, as in "nearly the same"...

It is not.... but it'll do :) I probably posted about running congruent Chronos 3-4 times (??) and this was one of them. In this one I'm also testing lighting as lighting does affect accuracy..... (precision) In other testing I went and bought these >>...

Oh I know dat...... Varmint Al at least has the sense to wrap a barrel around that part of the drawing http://www.varmintal.com/apres.htm Edited to add, just for YOU Al, me bein' a bitchagain because I can Actually that wavy line IS the path of the bullet LOL!!

LOL!!! This pertickler drawing is kinda foofygucker :) Once't you see the wavy line as "path of the bullet" it's hard to unsee

So John.... what'cha SAYIN' here? That you're iggerant? Or that physics is wrong? BTW what does "almost never mean?" Care to show them apples? Or is just that you ain't seen much? I can easily show you TWO ways that bullets "defy gravity".... Bullets in a crosswind print high to the left and...

I have found that while different chronos often exhibit differences in actual speed readings.......as in they may be showing different velocities one to the other by a few feet......shooting over several chronos will show a person quite quickly that they all three vary equally. As in -chrono...

IBS/NBRSA- "you can't make the stock concave" Edgewood- "see that, raise ya' one :) "

BTW, if you want the ES to go down to under 10fps you'll need to spend equiv $500USD for a scale that registers kernels. I routinely get 50BMG's down near that.....size don't matter

I have 11 chronographs ranging from Magnetospeed to a pair of Oehler 43's.... the last of which I bought from Dave Tooley. My understanding is that Dave is a fairly fart smeller and that the Oehler may have been connected with or used for for military testing projects under "Agencies Not To Be...

Incidentally this is also specifically why for the last 20yrs certain successful benchrest guys have been saying "I always tune at 200 because then its good for both yardages" Draw it on paper to see it clearly, sideview of the two trajectories. This is why thrown charges easily win at 100-200...

P. Octo.... Your observation is accurate and your question is a wonderful one. And there IS a solid and repeatable explanation. What you are seeing is a phenomenon called "velocity compensation" which is the rock-solid basis of the technique known as "tuning"......your lower velocity rounds...

There's a fake Kelbly in the house Please refer to necro 'Top lever safety on a Stolle Panda' immediately below

Hey.... I ran that title in ALL CAPS!! No disrespect Elmer