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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...

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...

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...

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...

Sold

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...

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.

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

I need money for a camshaft, buy this!

Bump

Bump. Sale fell through

Send me a PM.

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.

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...

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...

Chassis suck. That's my opinion after owning one. Better to try and find out what you like and dislike before buying.

Based on your comments, I suggest you get a very basic starter scope to shoot for a while so you can learn more about what you want and need. At this stage you are not likely to buy long term satisfaction the first time. A swafa 10 or 12x fixed power is a sound investment for $300 to learn with...

Been a couple years ago I bought the Bushy 10X Tac for $149, its worth it.

For Ftr shooting with bipod, it is common to use a heavy mat or board to address this situation. Many styles as most are homemade. I use 3/4" plywood with carpet glued on top. For stability a piece of angle iron is on the bottom of each end, this rail runs parallel to the direction of the barrel...

I have both swafa12x and argos6-24. Optical quality is comparable, retical and mag range offer superior capability on the Argos. Yes the turrets are a little mushy but have always been accurate, must be something to bitch about when nothing else is wrong.