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correct, but you can get subsonic rounds for some calibers, 9mm for example.

depends on the round, there are ballistics charts for most rounds widely available online with a little searchig. You can roughly assume to be "on" at 200 yards you'll be 2 or so inches high at 100 yards though.

How can you have a controlled experiement with two vehicles that could produce wildly different gas mileage figures? The point of the experiement was to determine which was more fuel efficient, they dumped in 5 gallons of gasoline, and drove at ~35 mph around a track, the smart thing to do would...

physics is fun, math isn't ;)

I do find it kind of frightening that neither of them could come up with the basic explanation.

I figured the esteemed Mr. ¿§êrìôù§«£òvëñ»? would do with a basic answer :)

werd. K.I.S.S.

within the context of the question the data I've provided should be more than accurate enough. Depending on load and powder the variation of velocities was less than 200 fps for a 150 gr. load. if you wanted to be more accurate you could look up the data for .40 S&W federal hydrashoks, I...

depends. Some 9mm some 40 smith, some 45acp, some 38, some 357 ;) here's a 40 smith. we'll use a 150gr nosler bullet, ballistic coefficient is .106 and the sectional density is .134, muzzle velocity will be best case about 1170fps. someone else can hack the math, you've gone beyond my...

in a perfect world the accel and decel would be the same, so... yep. Not the chamber but the barrel though. Jeff's explanation is better and more real world. if you really wanted to figure it out most of my loading manuals give you the coefficients for different bullet weights and calibers...

if shot straight up it will decel. at 9.8 m/s/s from the muzzle velocity, to zero. So it would depend on the muzzle velocity. Ditto on the way down, accelerating at 9.8 m/s/s until it hits something. Since the distance up and down are the same it will hit at muzzle velocity, negating friction...