Why exactly are wood stocks different than Carbon, chassis, etc.

[longrangelead]

So on the topic of "dead recoil" of a wood stock vs a CF or "plastic"... Yesterday while shooting the trainer in a non wood rokstock, I had major vibration in the rifle. It was only 3 shots out of 80, I was prone shooting off of a flatbed truck, using front bag and rear bino harness, shooting mat. It sounded like a tuning fork in there and lasted 3-5 seconds... Any ideas what would cause this? I was shooting at 800 plus and did not notice any accuracy issues. Re checked the rifle at 200 ish yards and no vibrations and accuracy was fine. Rifle has 12000 ish rounds on it with no issues in the past.

Ideas?

sounds like something is loose or coming loose inside?

Or just nothing touching the stock to damp out the vibration?

 

[Wrench]

So on the topic of "dead recoil" of a wood stock vs a CF or "plastic"... Yesterday while shooting the trainer in a non wood rokstock, I had major vibration in the rifle. It was only 3 shots out of 80, I was prone shooting off of a flatbed truck, using front bag and rear bino harness, shooting mat. It sounded like a tuning fork in there and lasted 3-5 seconds... Any ideas what would cause this? I was shooting at 800 plus and did not notice any accuracy issues. Re checked the rifle at 200 ish yards and no vibrations and accuracy was fine. Rifle has 12000 ish rounds on it with no issues in the past.

Ideas?

Did magazine capacity change through the shots or single feeding?

 

[Wprinkle]

Did magazine capacity change through the shots or single feeding?

10 round mag was on shot 4ish when it first happened.

 

[Wprinkle]

sounds like something is loose or coming loose inside?

Or just nothing touching the stock to damp out the vibration?

What could come loose inside? it was definitely in the butt.

 

[Wrench]

I've had mags buzz and I've had wierd harmonics from bipod or butt contacting something hard.and from low tension on the contact point (loose)..though not likely on a mat.

 

[BigNate]

So in my professional life I recently recieved a brief training in the application of fiber reinforced polymer. Simply put it's carbon fiber layered within polymer resin. The application I was involved in was as a reinforcement of steel structure.
Given this experience, my understanding of the forces imparted vs the structural integrity and how using both bidirectional CF as well as linear changes the failure mode, rifle stocks in reality should be lighter and stiffer than are currently being made.

I have not had the opportunity to dive into the rabbit hole yet, but it would seem to me linear material in the recoil areas with a thin overpayment of bidirectional, then transition to only bidirectional in the buttstock area in theory would both keep the rigidity in the recoil area and allow for some dissipation of force.

It would be interesting to watch some structural engineers tangle of this subject.