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Going back to the first page I think as many have stated it looked worse than it really was , but what really threw me was that one minute there was a smooth laminar flow field and then there was not. I would like to know why if it was wind or the bullets which were fully qualified yet were...

I agree , I don’t think anyone including me would just use one or two groups as any proof of anything especially trying to determine dispersion. Why people keep saying that shooters just use one or two groups is beyond me . No one does that. There are many groups over many days over many...

Yaw cards have worked extremely well but I can not help but wander is there is a deflection possibility. Years later I used velocity drop from muzzle to target and using groups at the same time to confirm suspected random dispersion . When the muzzle dispersion is highest so is the velocity...

The experiments I have done lately has been with known good quality bullets which does not mean much but by reducing any dispersion close to the muzzle definitely reduced it down range but as Jim Boatright mentioned it was much smaller than originally thought, in the case of a 190 SMK 30 cal has...

I agree ,lol

That is so interesting , thank you . I wander if the larger variability at the muzzle were damped Mechanically, would that effect or improve the down range variability?

That is tougher , if you could find 3 lots at different speeds I would say change weights around until they hit level at the distance you normally shoot . Then use the movable weight to keep it there.

Exactly I agree , that is why plotting each shot is so important . When I speak of one shot it is not to find a node , it is to find a trend which can clearly be seen as to barrel movement . Those bullets should only be dropping a fraction of what is on the target , and 110 -114 is where the...

Yes I have , I don’t think the test structure was in question although I would have done it differently ( smaller increments ), It is the results that I am not sure how Brian came to the conclusion from those results . As well as it was later said as absolutes. Hornady claims that was just...

I certainly do not mean to detract from the Hornady guys , I shot with Joe Theilen and Christina Theilan and the team Hornady for years , loved hanging with them but I will defend what I do and how I do it to the bone period .

Dude again you have no clue . Please stop your ridiculous assumptions and slander . Do you really think that one gun is the only gun that is shot in seven years ? That is just one test . Get over it . you don’t even use tuners , yet you want everybody else’s data , tree Rex was told why his test...

I have to protect my companies proprietary data points for my weighting formulas so ……. I have already posted some data . And it was totally quiet and ignored. It it showed improvement over baseline with weight and adjustments .Not going to do that again just to have it ignored .

I think 5036 rds over the life of three barrels in 7 years on the same rifle with one tuner is plenty to tell me what I needed to know .Not to mention data on every caliber from 22 rimfire to 375 Cheytac .

Once the gun is settled from load work up and shoots good , 6 shots per ladder and repeat as many times that you feel you need to to see the trend when changing weights for each graph or ladder . The goal here with one shot per charge is to control barrel temp and to be the same on every ladder...

Absolutely , the exit times do , but if the ladder does not show any real bending trends then a lighter or heavier bullet can . Once the pattern is found with the right bullet weight then the powder charge is adjusted to put you in the ideal exit time on the ladder . Or the tuner both can get...

The offset of weight above verses below the barrel centerline combined with recoil force being the main driver . I will change weight until I see trends in which the slower rounds are trending up . The only way I have found to know if the barrel is bending is to shoot ladders 1 grain apart side...

Granted you can still have positive comp without a tuner but the window is usually very small . With additional weight the window can be widened but the wrong weight can make it worse , if it does with a tuner you can at least move the adjustable weight to make it better . If it is a fixed...

The effect of the barrel moving downward is quite common on most every rifle and will cause exaggerated vertical dispersion so that it’s even with small ES the dispersion is large. To get the barrel moving up takes specialized weighting and offsets at least for a wide window .

Yes , a slower bullet is aimed higher by the barrel , and a faster bullet is aimed lower by the barrel. Meaning the barrel has a upward lateral velocity at the time of exit .