Recent content by CharlieNC

  1. CharlieNC

    Tuners in question ?

    Look closer at Vaughn's work where he determines the barrel harmonics based on the target from shooting a charge weight ladder; the frequencies he reports range from around 6-10,000 cycles per second! I have used his procedure to analyze targets from charge weight ladders I have shot and find...
  2. CharlieNC

    Tuners in question ?

    It would appear you did not bother to read the resources I posted, which provide both the target and the associated barrel vibration results which you question. Have you ever shot a charge weight ladder; if so what is your interpretation? These and other definitive published studies clearly...
  3. CharlieNC

    Tuners in question ?

    I do not recall seeing this reward being offered by Litz, and am only aware of the one regarding the aspect of a bullet "going to sleep" during flight; can you direct me to this? If there is something about the work of Kolbe and Vaughn which I help you with to understand PC please let me know...
  4. CharlieNC

    Tuners in question ?

    For a rimfire, where there is no load tuning, the barrel measurements by Kolbe (http://www.geoffrey-kolbe.com/articles/rimfire_accuracy/tuning_a_barrel.htm) demonstrate positive compensation using a tuner which did little to the barrel amplitude and frequency, but primarily alters the phase...
  5. CharlieNC

    Optics Athlon Cronus Stimulus Special SOLD

    Sold
  6. CharlieNC

    Range Report Group size means little

    This is a link to a rather recent (2017) in depth evaluation by the USMC. In short, as the OP surmised the Average Radius of the shots vs center does not adequately describe the group, and the Standard Deviation of the radius must be used to obtain a robust description. Statistics heavy if you...
  7. CharlieNC

    F T/R Competition Accuracy went out the window !

    If you really want to get frustrated with your setup, npa, follow-through, etc then try your gear with a 22lr. You will find more problems than you imagined possible. I've learned more with one in the last year than ever before; not perfect but improved.
  8. CharlieNC

    Optics Athlon Cronus Stimulus Special SOLD

    It is mil. The main difference is this pre BTR reticle has 0.2 graduations.
  9. CharlieNC

    Optics Athlon Cronus Stimulus Special SOLD

    I need money for a camshaft, buy this!
  10. CharlieNC

    Optics Athlon Cronus Stimulus Special SOLD

    Bump
  11. CharlieNC

    Optics Athlon Cronus Stimulus Special SOLD

    Bump. Sale fell through
  12. CharlieNC

    Optics Athlon Cronus Stimulus Special SOLD

    Send me a PM.
  13. CharlieNC

    Optics Athlon Cronus Stimulus Special SOLD

    Athlon 4.5-29x56 APLR Model 210107 with rings (UTG Pro machined in USA), Vortex level, and caps for your $1200 stimulus check including shipping and insurance in continental US. Like new scope, only shot a few times at the range in perfect condition.
  14. CharlieNC

    Project: Inexpensive Rifle Accelerometer

    I'm interested in a similar application, measuring muzzle vibration as related to positive compensation (node). With barrel times typically in the 1.5ms range, a very high measurement/sampling rate is required. I acquired an Arduino which can fulfill this need, and still working to finalize the...
  15. CharlieNC

    Solid beginner's bolt gun for learning shoot long range?

    Seven years ago I decided I wanted to try learning to shoot prone. Uncertain whether I would like and stick with it, I bought a Savage Hog Hunter in 223 for $435 and immediately replaced the stock. Years and several ballistically superior rifles later it is still my favorite to shoot out to...
See more
Top Bottom
Back
Home
Forums
Merch
Alerts