I look forward to someone giving us a first hand report of how it is working for them. The videos show how to tune it, Cortina does it with 3 shot groups. But I'd like to see someone show a string of groups before and after tuning so I observe the tune actually working outside of the 3 shot adjustment group. I know for me personally, not being 100% consistent in my technique, without changing anything I get good and then great groups, then just good again. I worry that if I held my tongue in a certain manner during the great group, that I might erroneously attribute my success to that and then spend the rest of the shooting session moving my tongue around trying to find it again.
I look forward to someone giving us a first hand report of how it is working for them. The videos show how to tune it, Cortina does it with 3 shot groups. But I'd like to see someone show a string of groups before and after tuning so I observe the tune actually working outside of the 3 shot adjustment group. I know for me personally, not being 100% consistent in my technique, without changing anything I get good and then great groups, then just good again. I worry that if I held my tongue in a certain manner during the great group, that I might erroneously attribute my success to that and then spend the rest of the shooting session moving my tongue around trying to find it again.
So if you adjust your tuner at 100m does the tune hold for other distances, have you tested it. What is the mechanism at play here. Is it positive compensation?
Positive compensation occurs when slight differences in MV between rounds are compensated (mitigated or made less consequential) to enable those rounds to have the same POI despite their MV differences. In other words, it is supposed to allow slightly faster and slightly slower rounds to strike the same place.
If positive compensation is what explains how a tuner does what it does, it follows that a tuner that's correctly adjusted for 100 meters will not compensate at other distances.
Of course, positive compensation may be only part of the explanation of how tuners work.
One explanation of a tuner I read was that it permits you to time the exit of the bullet from the barrel when the barrel is temporarily stationary at either swing of its extreme. I would imagine the barrel would have the highest velocity of change during the middle of its sweep, and the lowest velocity, and eventually pause to reverse direction at its extreme.
I look forward to someone giving us a first hand report of how it is working for them. The videos show how to tune it, Cortina does it with 3 shot groups. But I'd like to see someone show a string of groups before and after tuning so I observe the tune actually working outside of the 3 shot adjustment group. I know for me personally, not being 100% consistent in my technique, without changing anything I get good and then great groups, then just good again. I worry that if I held my tongue in a certain manner during the great group, that I might erroneously attribute my success to that and then spend the rest of the shooting session moving my tongue around trying to find it again.
I installed one on my 308 which has an IBI barrel. I haven't played with it much because I spend much more time shooting my 22's and 6.5's.
My 308 is frustrating me because I am having a hard time getting my ES and SD where I would like them to be.
No only did i change barrels but I went from shooting Sierra 175 SMK's to Hornady 178 BTHP Match.
Every other rifle I load for is in single digit SD's.
I'm not blaming the EC tuner brake because it shoots the same ES and SD with and without the brake.
I may try shooting some 168 SMK's that I have on hand or switch primer brands to see if there is anything there.
I may even try using IMR 4064 instead of Varget .
Once spring rolls around and I do some more testing I'll give my opinion on the Tuner Brake.
I did the 3 round test and I did find a repeatable tightening of group sizes at a certain setting within the first turn outwards.
Try changing your firing pin spring.
Try changing your firing pin spring.