MIKECAMERON
New member
Finally a method I can under stand. Worked on three of my rifles so far. It was a threat to BC so it was thrown off of the WWA network.
No it wasnt, why do you folks feel the need to make false accusations.?
Finally a method I can under stand. Worked on three of my rifles so far. It was a threat to BC so it was thrown off of the WWA network.
The thread you linked to doesn't show much except a number of testimonials (which are fine) and refinements on the basic formula, whatever that is. All welcome, but what's the original prescription?
Google search for "Purdy prescription" shows the site you've linked to, and the two on BR Central.
Post 11 on the RA site did have a formula, but it wasn't well formed for in-line math. e.g.
(BL/8 x 9) - 0.45" = PL
PL - BL = Tuner Length
is not well formed. Is it suppose to be
[(BL/8) x 9] - 0.45 = PL.
PL - BL = Tuner Length
or
[BL / (8x9)] -.045 = PL
PL - BL = Tuner Length
? I'd assume the first, (since in the 2nd, "(8x9)" could be simply expressed as "72", but we got one guy presenting another's work, so who knows...)
And what the blazes is H/H?
Given the man in inundated, is there somewhere where we can just go & see his prescription without bothering him?
TIA
No it wasnt, why do you folks feel the need to make false accusations.?
To All:
What may or may not have happened on WWA is really nobody's business except mine. And I will not comment on it. I ask you all to do the same.
Tony
I worked your formula for my von-ahrens tuner and at present am trying to figure out how to lengthen it to accommodate the results.I wonder if I can just cut the bloop tube to the correct length for the length.of the tuner or does it need the weight of the lengthened body? IF this is trully harmonics then weight shouldnt come in to play should it?
Hi Mike
I appreciate you sharing about your VA tuner. I may not have sent you the pic of the tuner sent to me by my friend in the UK. He cut off the bloop tube extension to allow him to shorten the length to meet his requirements on his barrel. It apparently is now a shooter and with the lightened weight qualifies for both HV and LV classes.
In all the calculations I have done, I have never considered weight as part of the equation. Barrel length and opening diameter of the tuner are the only considerations in my formula
With the VA weights, you may end up being quite a bit heavier if you go for a longer length. As long as you have done the numbers correctly and get to the length prescribed by that, your barrel should be in tune
Have a great nite
Tony
After thinking about your RX wouldn't it be possible to fabricate a tube to be attached to the muzzle that is just a straight tube the diameter of the barrel and using your formula make it to the proper length and (if this is truly a harmonic tune) without all the extra weight it should be in tune shouldn't it?
I had to move the tuner out more than half an inch to get to where the formula said tune was to be. I had been shooting the rifle with the tuner even shorter than it is with the spacer. Tony recommended setting the tuner @ about half of it's range, which I did with the move.. It come right into tune nicely in 4 clicks. Amazing, me thinks.
Pete
Doug
Who's spreadsheet?