Quote:
Originally Posted by Milano
If I may add my 2 cents what is the difference between a 17 HMR traveling at 1300 f/s and a 338 Lapua Mag at 1300 f/s? Sectional Density. Instead of a straight look at the velocity I made up a formula that works fairly well. It is:
(1000/{speed in M/S}) x (Sectional Density) x (1.5325)
For example:
17 HMR 20 gr @ 1300 f/s -- DAM 1 PEN 3
.338 Lapua Mag 250 gr @ 1300 f/s -- DAM 4 PEN 3
(As an apples to apples comparison: the 17 is at 250 yards to drop to 1,300 f/s. The Lapua is at 1,285 yards to slow down to 1,300 f/s!!
Anyway I made an excel spreadsheet that makes all this fairly easy to figure out. Any question about how it works please ask. Here is the download:
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Nice system. It is similar to how I do my own system (which is still in development). I do change the Weapon Damage a bit, though. While I FFS's damage system, I round up or down in order to "include" or "exclude" certain calibers from certain damage classes based on my on experience. I use 1D10 damage for my rifles and double my calculated Damage when determining pistol damage... BUT I USE 1D6 TO REPRESENT PISTOL DAMAGE. In my game, a 9mmP does 2d6 and carries a PEN of 3. An AK-74 carries 2d10 DAM and has a PEN of 1 (steel core) or 2 (lead core) at Short Range.
I find that this modification to pistol damage makes them (and SMGs) more viable in the game.