Shooting Sports USA - July 2017 - 17
a handy feature should the optical sight
malfunction during a match, since the optic
can be popped off quickly and the match
finished with the irons.
ON THE RANGE
The loads on hand included CCI's 40-grain
Mini-Mag copper-plated RN and their
Standard Velocity 40-grain lead load that my
MK II loves. Three additional loads: Federal
American Eagle 45-grain CPRN Suppressor,
Federal Premium Gold Match 40-grain Match,
and Aguila's 40-grain Pistol Match, were
included. These are standard velocity loads
that my MK II occasionally balks on (possibly
due to not being thoroughly stripped and
cleaned in a decade) and that I can't count on
for match use. Given the erratic availability of
.22LR rimfire ammo today you almost have to
'take what you can get', and the gun needs to
shoot it reliably and accurately. I was hoping
the MK IV would prove to be less finicky than
my elderly MK II. As it turned out, I needn't
have been concerned.
I started by zeroing the iron sights and
trying the various loads. The MK IV ate every
one of them without as much as a burp!
I had a SIG ROMEO1 reflex sight on a
Picatinny mount on hand and that went on
next. It was zeroed from a 25-yard bench rest
and the positive elevation and windage
adjustments made that a quick process.
Bench rest accuracy tests followed,
and a look at the accompanying chart
will show the new design did nothing
to degrade Ruger's proven
accuracy. Steel Challenge
practice was next,
followed by a six-stage
The new MK IV features
the same frame and handling
as previous models, but with
ambidextrous safeties and a new bolt
release lever. Below: Field stripping the
MK IV takes mere seconds, thanks to
the rear take down button.
That put about 500 rounds through the
gun, and I was still waiting for the first
malfunction. Given the easy field stripping,
excellent accuracy, and the reliability with
various loads, my decision was easy. It was
time to retire my MK II and this was one test
gun that wasn't going back after the test loan
period. I sent them a check.
The only remaining concern was the
5-pound plus trigger. It proved 'less than
desirable' during my Steel Challenge match.
For that I turned to Scott Volquartsen and his
namesake company (volquartsen.com). They
are America's premier Ruger smiths/parts
suppliers, and even though the MK IV had
only been out for a few months they already
had their drop-in Accurizing Kit ($105)
available for it. This adjustable match trigger
reduces trigger pull to a crisp 2.5-pounds.
My MK II served me well for over 20 years,
but there was no reluctance in retiring it.
When I can replace it with a gun that
tosses sub-half inch groups at 25
yards, eats any load I feed it, has a
2.5-pound trigger, and strips for
cleaning in mere seconds-
what's not to love!
Bill Ruger would
be proud of the
new MK IV.
SSUSA.ORG | JULY 2017