［Question about Bolt action.］
- What is VC of the piston ?
- "VC" is the abbreviation of the vacuum system.
This system can resolve negative pressure and make long and straight shot.
- What is HD of the piston ?
the head piston is superior in the durability.
- Should I choose VC and HD, which?
If want to the first velocity and the hit rate, "VC".
If want to increase a flying distance of BB, "HD".
Question about TM L96