A Howitzer of My Own

I was listening to NPR the other day and they reported that the U.S. Supreme Court has taken a major Second Amendment case under consideration. Many people on both sides of the gun control issue await the first major ruling on the right to bear arms since the 1930s.  It is expected that the Court will recognize the right to bear arms as an individual right for the first time in US History.

It must be fate, but this case coincides with my finding this guide to firing a howitzer published by the U.S. Army in 1976:

I've always wanted to own my own howitzer.  Here is a picture of the FT 155 I found on the internet.  It is the self-propelled model, so it may be more expensive to maintain than a regular howitzer:

Since I live only live about 190 miles from the Mexican border, I'm pretty sure I'll be able to use the howitzer from my yard to protect our American border from marauding bands of Chiapas rebels, the Nicaraguan Sandanistas President Reagan warned us about, or even Hugo Chavez's crack troops.   I may be wrong though; the howitzer may not reach that far.  I'm having trouble deciphering the firing tables: