barrel sealer ,probs?

[qwerty]

Double post!

looks good you just need a higher pressure pilot.
what were you shooting?

[Ragnarok]

And retains less energy, resulting in less stress on your cannon.

Less momentum.

The energy in a light piston will be essentially the same as in a heavier one.
Energy is force times distance - and given the forces will be (more or less*) the same, and the distance will be the same...

*Okay, the faster piston means you have to account for Bernoulli, but the effects of that are small at the speeds we're talking about.

Essentially, a piston in a given valve (at a given pressure) always attains the same energy when opening. The trick is to get as much velocity as you can for that energy, which is done by lowering the mass.

[FORE!!!!]

if u mean as in the projectile? it was a marble perfect fit in a 3/4 barrel.

6 grams it weighs