When the first shot in the string pops
up a good group can still be saved by chasing
with subsequent shots. Check with a sighter
shot and make sure the new point of impact
isn't from a wind condition change you missed.
If you chase a high shot without checking
and put another even higher there's no one
to blame but the loose nut behind the butt.
Shooting in the 1982 IBS Nationals I had
Heavy Varmint 100 sewn up through four groups.
In windy and switching conditions I wasted
a .169" on the warm up. The first four record
matches were .224", .212", .158", and .254".
I knew if I threw down another .250" it
would be an easy victory. Shooting from
the dangerous, upwind, bench one; Pete Rechnitzer
- another lefty sat next to me on bench
number two for that fifth match. The first
record shot popped up above the moth ball
when all previous shots had been below the
moth ball. I slammed two sighters down to
check it and they went into that high area.
Back to the record target, and firing rapidly,
the next two went into a tiny hole to make
a . 100" three shot group. The fourth dropped
straight out the bottom to about .300" and
the fifth blew me out of the water when
it went down to the original impact point
and made a group of .374". Fourth place
in the aggregate at the Nationals isn't
so bad. Well, yes it is when the opportunity
for first slips by on the fifth shot. It
turned out Pete had been watching the flags
while I ran the string. He pointed out the
flags that turned while I was speeding without
a license. The moral of the story is: I
started the group without knowing which
flags had caused the impact point to move
above the mothball, with closer attention
the group and aggregate could easily have
been saved.
When the impact moves left or right a flag
down range will usually explain the movement
and it's easy to chase the shot. If your
observation says the shot should impact
the group and it doesn't you have some work
to do. Use the sighter to find the indicator
that explains that shot.
Adjusting to Changing Conditions
Several specific types of conditions could
appear during the course of a shoot. A match
is a trigger pull when an overcast sky and
very light breezes let you aim at the same
place for every shot. In these matches you
feel you're losing ground on the leaders
if the target comes back a .229" at 100
or .545" at 200. In equipment shoots like
this take time to settle your rifle completely.
If a shot gets touched off with the crosshairs
slightly out of the group the target scorer
won't let you try again.
Conditions go from the easy trigger pull
up to the most difficult. The most difficult
are rapidly swirling gusts where mirage
keeps sighter and record shots from being
visible. Lots of different conditions are
available. The key to adapting to the days
conditions is being aware of what's possible
during a relay, and what are the prevailing
conditions. Go to the line before your relay.
Study wind direction and velocity, time
the wind cycles. How long does a gust take
to switch, build, peak, decline, and switch.
Would you get off five shots? three? two?
Pick the predominant condition and test
it on the sighter. Sometimes here are the
good groups easily, although much of the
time the shorter non-normal condition is
gentler and gives the better group. If that's
the case you'll have to test your nerve
and wait for it, and wait, and wait. Know
how long you can delay and still finish
the string. One minute forty five seconds,
one minute, forty seconds? KNOW the limit
by testing with a stopwatch. I use an inexpensive
Casio sports watch with a built in forward
and reverse timer in it. Have your stopwatch
at the bench and running during all matches.
The range officer doesn't always give the
commands on time. The stopwatch makes your
willingness to wait calculated rather than
a gamble. NBRSA gives no finishing commands
other than two minutes, one minute and cease
fire. How can you wait those last few precious
seconds on a decreasing condition if you
don't know how much time is left? When shooting
NBRSA matches I set the alarm to go off
five seconds before the cease fire command.
Then if I hear it I know it's time to pull
the trigger no matter what the wind is doing.
Repeat your observations and calculations
during the day. The best time killer during
the five relays at the Super Shoot is to
pick a few good shooters from each relay.
Select some who shoot the same bench rotation;
watch them through a spotting scope before
your relay for invaluable information. You
can usually tell where they held each shot
by following the sighter. I'm easy to watch.
Before any record shots I'll test on the
sighter. Anytime a record string gets interrupted
there is always a sighter shot to check
impact before another record. Allie Euber
is tough to watch, he's a good enough wind
doper he patterns the conditions early and
doesn't always check the sighter late in
the relay, even when you know he's firing
in conditions he hasn't been using. Jerry
Masker isn't a good choice, poor eyesight
has forced him to become a marvelous wind
doper who rarely goes back for sighter shots.
(Allie calls him one of the best wind dopers
ever, high praise indeed.) Lester Bruno
shoots so many sighters you can't tell which
mean anything. I like to follow him anyway.
High drama unfolds at the end of the relay
when he runs out of time. Watching also
gives the opportunity to observe switches
the shooter doesn't catch after they dip
their head to the scope. (Keep the off eye
open.) You don't make any friends though
by going up to them afterwards and saying:
"Boy are you dumb, I saw that switch just
before you shot". Some of my other favorites
to watch include Don Geraci, Gary Ocock,
Bob White, Myles Hollister, PJ Hart, Doc
Maretzo, Dennis Wagner, Lowell Frei and
whichever cute entrants Doc Palmisano brought.
The Tomball range near Houston, Texas is
notorious for starting the day left to right,
out of the cool trees, and ending right
to left, across the baked flats. When things
switch figure out where your best group
is and go get it.
Uncommon
Wind Indicators
For the same reasons shooters go to the
line early and observe prevalent conditions
you have to expand your focus to include
some uncommon indicators. I can still picture
Phil Sauer at the 1982 IBS National. He
would stand behind the line at Kelbly's,
rocked backed the way he likes, with a studious
expression looking down range at the variables
in the wind pattern. (You can use big words
like variable and studious when you speak
of an experimenter like Phil.) His study
that year yielded the Three-Gun Crown.
The classic example of uncommon indicators
has been repeated many times. A shooter
waits for a strand of grass in front of
the target to bend just the correct amount
and a winning group appears while those
around him shoot wailing wall rejects (also
called shotgun patterns, weather reports,
@#%*X!V&* etc). Let's open our horizons
even further. How many of you look at the
trees far up range on a gusty day to see
when a calm will hold for thirty seconds.
This works at Kelbly's range in Ohio. Two
groves of trees several hundred yards upwind
have helped me out on numerous occasions
(this must mean the wind blows in Ohio if
I've needed them on several occasions).
Camillus, New York is another range where
the line of trees that extends far upwind
can keep trouble at bay. Sitting next to
Wally Hart in a varmint match at Camillus
I was happy as a clam waiting for a slack
to come in. With no shots on record and
time running down Wally suggested I glance
way up range. Looking up, trees were bent
over from an approaching cloudburst, fingers
blurred, and the brass sparkled as it flew
through the air. The Black Canyon Range
north of Phoenix, Arizona has a big bore
range several hundred yards upwind. Those
20 foot high range flags are a perfect indicator
of conditions on their way.
When you're shooting on the down wind side
of the range the best time to start a string
is when the flags from up wind switch over
and steady in the angle and velocity you've
been looking for. The upwind range flags
give plenty of warning about intensity increases
or decreases, all you have to watch out
for is reverses sneaking in from the back
side.
A favorite tip is listening to the moans
and groans of those around you. If your
neighbor screams, pulls his hair, curses,
and throws his bolt down range don't touch
off a shot. Let the gust, letup, or mirage
boil settle and throw a few sighter shots
down range. (Speaking of throwing things
- once I left an MTM box, full of 6BR cases,
on top of the Camillus clubhouse roof.)
Be aware of the swirls and eddies around
you. Breeze from behind hasn't had a chance
to move flags but can be the most important
on its influence on bullet flight. Topography
influences wind in the same fashion the
ground influences water. Thermal influences
dictate that conditions generally move downhill
in the cooler evening, and morning hours.
Then when there's enough warming the conditions
tend to move uphill. This changeover presents
a completely different set of patterns for
the shooter. By being observant you'll notice
a few other peculiarities. In a protected
range like Johnstown a light breeze moving
from left to right will spill over the top
of the trees, then eddy back towards the
base of the trees with a few moments of
reverse for the first ten benches, before
the condition strengthens enough to wash
out the eddy and show left to right over
the whole range. The same thing happens
around large man made objects. The Central
Jersey range, Kelbly's, and New Braunfels
all show the same effect. Boy does it drive
you nuts when you don't know what's causing
it, or when it's not readable.
Read this chapter several times. Understanding
the effect of wind on a bullet is the most
important item in the book for a beginning
accuracy buff. Once you believe in the wind
moving the bullet half the task of a good
aggregate is completed.