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Published by Samuel Penn.

Also, see my profile for things that interest me.

Glendale Website - My main web site.

Yags - Main site for yet another game system, a generic GPL'd tabletop RPG.

Yagsbook - Documentation on the Yagsbook RPG documentation format, a Sourceforge project.

Mapcraft - Documentation on world mapping tools, another Sourceforge project.

Midnight Saga - An Ars Magica campaign.

Active Topics

The current topics are currently under active development (relatively speaking).

Yags is Another Game System - Game design notes for Yags, a Free roleplaying game system I use as the core system for most of my campaigns.

Yagsbook - Notes on an XML based documentation system I use for documenting Yags and related campaigns.

Full Thrust - Notes on Full Thrust

Stargrunt - Notes on Stargrunt.


Guns, Guns, Guns

Some physics based rules for firearms. These are meant to be guidelines to help in determining gun stats for Yags.

See also: Modern Combat.


Damage should be based on the KE of the projectile, with some modifiers for the type of projectile being used. The weights given below are grammes of the bullet. Velocity in m/s.

Round Type Mass Diameter Velocity KE Damage
.32 ACP (7.65 Browning) Pistol 4.2 7.85 282 167 23
5.56×45 NATO Rifle 4 5.69 940 1775 30
7.62×51 NATO Rifle 9.5 7.82 840 3362 35
9.3×62 Mauser Rifle 15 9.3 800 4825
.50 BMG (12.7×99 NATO) Rifle 42 13 928 17876

Damage above is current Yags stats.

yags/combat/guns.txt · Last modified: 2015/02/04 22:40 (external edit)