This is the work I started writing on the subject of reloading for
As it got bigger, and more detailed, I realized I wanted to add
sections on other topics, and the scope of the book is now limited only
to my interests and experience.
I started this project because I wanted to know how to quickly and
accurately adjust rifle reloading recipes to achieve the best accuracy
in a given rifle. Being an engineer, I wanted to achieve the goal
in a reasonable number of test shots, and that's where the fun started.
In due course, it became apparent that understanding how a rifle and
its cartridge work (in excruciating detail) is critical to
understanding why adjusting loading recipes provides the results it
does. Thus the section on Initial Physics.
If you are only interested in how to quickly develop a loading recipe
you can just go straight to the section titled Finding The Right Load.
I was planning to condense Finding The Right Load into a step-by-step
tutorial, but about that time Scott Satterlee came up with the '10 Round Load Development Ladder Test',
and I went down the next rabbit hole trying to explain WHY his method
works - with very little success so far. However it is apparent
the Satterlee method does work, and uses half the shots my method
uses. Scott's method is worth a try if you have a good
chronograph, or are limited to a 100 yard range.
NOTE: One spot where Scott
(and a lot of other people) seem to have a misconception is that rifle
barrel 'harmonics' eg vibration, differs significantly for a small
change in velocity. This is not true. For the same bullet,
every time the gun is fired (within a 'reasonable velocity range') the
barrel vibrates substantially the same. What we all are looking
for is how to get the bullet out of the barrel when the barrel is
moving upward, but before it peaks. As Scott notes, he finds the
charge range which exhibits the lowest velocity variation, and then can
load any 'reasonable' powder to achieve that velocity with consistent
success. My problem is in finding out why a low extreme spread or
'ES' occurs at that point.
ANOTHER NOTE: I started out
thinking that small groups were the desired end state (thinking like a
Bench Rest shooter) however, after a little analysis of the importance
of consistent velocity, I have come to the conclusion that if you can
get your groups under 0.5 MOA, then you should try to get your 5 shot
standard deviation or 'SD' down to single digits. Once this is
accomplished, your time is better spent on the longer ranges learning
to read wind, and anticipating wind's effect on your shot.
I apologize in advance to those who find my notes to be long winded and
micro-detailed. I am trying to document WHY and HOW things
happen, and any failure to make it interesting and readable is my
own. I hope at least some members of the shooting community will
appreciate a detailed description that might not be available