Heavier BBs?

[SkruWD]

question, am i right in thinking that a .30g bb leaving a barrel at 350 fps has a greater effective range than a .20g bb leaving a barrel at 350 fps? Also more accurate due to them being less susceptible to wind effects? just out of curiosity, purely

[slayer]

whatever grade BB you use must not be greater in joules/fps to 350, so you will lose range using heavier BB's

[Lazyboy]

You are right, a .3 leaving the barrel at the same fps as a .2 will travel further than the .2, because it has more stored energy.

A .3 doing 350 FPS has 1.7 Jouls of energy Where a .2 doing 350 FPS has 1.16 Jouls.
The .3 has the same stored energy as a .2 doing 427 FPS.

For a .3 to stay under the 1.16 Joul limit (350 FPS) it can be doing no more than 286 FPS.

[ObsoleteAcey]

you'd generally never use anything over a .25 in a pistol. The hop probably would have trouble handling more than that. You'd need to apply more hop which would drop the muzzle velocity somewhat. Also because GBBs are very temperature dependant you'd really notice the drop in FPS with a heavier bb

with the tiny barrel in a pistol you wouldn't get much advantage. The real advantage comes with a sniper rifle. The heavier bb stays in the barrel longer and gains more momentum. Also because the BB is the same shape and size, but heavier, it looses it's horizontal velocity at a slower rate. However it will have more vertical velocity due to it's greater mass

[SkruWD]

ah i see i see is that 1.16 joules an arbitrary number or is that a limit set by the authorities?

[Lazyboy]

It equates to 350 FPS so is the limit set by TAG rules.

[ObsoleteAcey]

addendum to my earlier statement. They will not loose any more height than a .2. If you remember physics, gravity accelerates a mass an 9.81m/s/s regardless of mass