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Guys and
Gals,
As a
service to the shooting fraternity, the following are my findings after
extensive scope testing from several years ago. As a disclaimer up front, I have no vested interest in any scope
manufacturer nor any ax to grind. Like
Joe Friday of Dragnet fame used to state, “Just the facts Mam.”, I’m attempting
to relate the facts as I found them after hundreds of hours of testing so you
can make a better decision concerning the purchase of a quality (good glass and
robust, repeatable tracking) scope for silhouette.
First the
setup. After a number of years of
frustration with Leupold tracking problems (new style 24X and 36X BR’s), both
catastrophic breakdown during matches and lack of consistent tracking, this
shooter embarked on an extensive testing regime.
The test
rifle for assessing a scope’s tracking ability was an Anschutz 2002 compressed
air rifle. This rifle will shoot
5-shot, round, one-hole groups all day at 60 feet indoors. An indoor, 60-foot range was used as well as
a sturdy benchrest setup. RWS R10 Match
pellets were used for all testing and the Anschutz barrel was regularly cleaned
to assure that rifle accuracy was at top form during all testing. All scopes were setup so that they were in
the middle of elevation and windage for the first shot in the testing for
tracking repeatability. The scopes were
also tested at extremes of windage and elevation and the tracking results
recorded.
The
results were very insightful. At the
extremes of elevation and windage, tracking for all but the Sightron scope
deteriorated dramatically. No scope
should be used that is less than one complete revolution from the top of
elevation for rams. At that range,
repeatable tacking is almost none existent in some scopes. The same holds true for windage. A scope MUST be setup so that the windage
and elevation are centered somewhere between pigs and turkeys for all
silhouette disciplines.
The test
procedure was to shoot with the elevation and windage in the middle of travel
for 5-shots to create a baseline. Next,
the elevation was adjusted up 2 MOA and another shot was fired. This was repeated so that there was a total
of 10 MOA of elevation added to the base line or 5 shots every 2 MOA of upward
adjustment. The scope was then adjusted
for 2 MOA of right windage, a shot fired and then the elevation was decreased 2
MOA and a shot fired. This was repeated
for a total of 10 MOA downward or 5 shots.
This total process was repeated again and should have produced an up,
then right, then down, then right, then up pattern that looks like what is
called a “square” wave. This procedure
was repeated at the extremes of elevation and windage for all scopes
tested. Well over 5,000 rounds were
fired during the several months of testing.
The
following scopes were tested:
Leupold
24X BR new style – 3 scopes
Leupold
36X BR new style – 2 scopes
Leupold
24X D-series – 2 scopes
Leupold
6.5-20 – 2 scopes
Sightron –
24X – 1 scope
Weaver 10X
original USA made MicroTrack – 1 scope
Weaver 36X
new Japanese MicroTrack – 1 scope
BSA
Chinese – don’t remember model - $100 scope – 1 scope
B&L
4200 – 6 x 24 – 2 scopes
The best
tracking scope was the Sightron. It
produced a pattern that looked like it had by done on graph paper. It was truly amazing. I don’t know how long the Sightron will keep
its tracking repeatability, but it blew away all of the other scopes’ in
tracking ability. The downside is that
it has the poorest quality glass.
The
poorest tracking scopes were the Leupold new style BR 24X and 36X, not the
D-series. The $100 Chinese BSA tracked
better than these Leupolds. After much
research I found out that Leupold had been installing poor quality parts in
their tracking systems for a few years and knew it was a problem but shipped
them none the less. The Leupold
D-series tracked about the same as the original Weaver MicroTrack and B&L
scopes, or in the second best tracking group.
The best glass was in the B&L 4200 scope. Several of us looked through the scopes to assess glass quality
so that call is not just my own. The
Leupolds were just behind the B & L scopes in glass quality.
Some of
the Leupolds, 24X and 36X BR new style shot shotgun patters even though they
had just been returned by Leupold for warranty work. The new Weaver MicroTracks are MicroTracks in name only. The Weaver tracking system is made in Japan
by the same company that makes most of the scopes for the US market. I talked to the gentleman that developed the
original MicroTrack. He verified that
the new Weaver MicroTracks were a cheap knockoff that had nothing in common
with his original design. The original
T10 MicroTrack tracked better than the new Weaver MicroTrack. But, the old T10 has poor quality glass and
is very heavy, not a good choice for silhouette given the other alternatives
that did not exist when the original MicroTrack was first sold in this country.
There you
have it, uncensored. I’m sure a few
manufacturers will be less than pleased, but nothing like the displeasure of
some of their customers. There is
nothing worse than spending thousands of dollars doing to a big match like
Canadian or US Nationals only to have your scope stop tracking. If you can’t purchase or borrow a scope you
might as well pack your bags and head home when that happens. I have seen it happen on numerous occasions.
Post
Mortem:
If I were
to seriously look at purchasing a top quality scope for silhouette at this
time, I’d look at the Zeiss Conquest series.
They have a reputed excellent tracking system (I have not tested it yet,
but the mechanics look to be of an excellent design) and incredible glass (I
have looked through several and compared them to Leupolds.)
All the
best,
Dan
Theodore