Mountain Tactical Company was founded with the passion to
provide precision components for the everyday shooter. One of the most critical components on a
precision rifle system is the barrel.
For the last couple years, we’ve been working on producing
affordable, accurate barrels suitable for the most demanding precision shooter
and the casual hunter alike. Whether you
are upgrading an old hunting rifle or building a ground up custom, a Mountain
Tactical Company precision barrel will exceed your expectations.
Our barrels start out as certified 4140 or 416R Rifle Barrel
Steel. 4140 requires a finish such as
Cerakote or bluing to avoid rusting.
416R lasts longer than 4140 which is why it costs more.
Barrel blanks are stress relieved then gun drilled, reamed,
and button rifled on modern CNC equipment.
Barrels are then stress relieved to remove any internal stresses from
the button rifling process.
To ensure utmost accuracy, each barrel is then hand lapped
to remove any tooling marks to ensure the bore’s surface finish. By double stress relieving each barrel,
internal dimensions will not change during the contouring or chambering
***Professional gunsmith installation required***
All barrels are precision button rifled, stress relieved,
and hand lapped to ensure consistency and ease of cleaning. Prior to shipping, every barrel is air gauged
to confirm measurement and consistency.
There are a lot of debates out there about how many
lands/grooves make the most accurate barrel. We can say that without a doubt
that we have yet to manufacture a barrel that isn’t inherently accurate.
Fluting refers to the removal of material from a cylindrical
surface, usually creating grooves.
The main purpose of fluting is to remove weight, and to a
lesser extent increase rigidity for a given total weight or increase surface
area to make the barrels less susceptible to overheating for a given total
weight. However, for a given diameter, a non-fluted barrel will be stiffer and
able to absorb a larger amount of heat at the price of additional total weight.
There is a lot of information, or misinformation on the web concerning fluting.
One piece of misinformation is that a fluted barrel is stiffer than a
non-fluted barrel. This is in error. A fluted barrel of, let’s say, a CTR Contour
will be stiffer than a barrel of the same weight, such as a Lite Contour. But a
CTR Contour that is not fluted will be stiffer than a CTR Contour that has been
fluted. It is a mass effect, the more mass around the bore of the barrel, the
stiffer it will be.
Break in Procedure
To obtain the best accuracy from your new Mountain Tactical Precision
Barrel we recommend that it is properly broken in. The procedures outlined
below are our recommendations and not “set-in-stone” procedures, we have
found that there are a wide variety of break in procedures available out there and
one may fit you better than others. To get the most out of your barrel and
ensure that it won’t foul in the future please use these or your ideal
break in procedures.
There are two types of fouling that will affect your
accuracy, copper fouling which is caused by the jacket from your bullets
being stripped off in the barrel and powder fouling. Typically, the first few
rounds shot through your rifle will cause copper fouling. It is very
important to prevent the fouling from building up in your barrel to remove this
fouling after each shot. Powder fouling is normal with any rifle or pistol
and is easy to remove.
DO NOT USE MOLY COATED BULLETS DURING BREAK IN
have found with experience that for you to get the best results out of
your barrel you should clean after each shot for the first 10 rounds
or until the copper fouling stops. With all our barrels being honed and
hand-lapped we have found that fouling is minimal.
use a bore guide and a good, coated rod when cleaning.
good quality phosphor bronze brushes.
good quality cotton flannel patches.
- Use a
quality bore cleaner like Butches Bore Shine or Sweets to remove any
copper. Copper residue will show up as blue with these cleaners.
your cotton patch in your bore cleaner and swab through the barrel. Once
the barrel has been completely coated let sit for 30 seconds and use
your phosphor bronze brush dipped in the same solution and scrub your
bore (about 10 to 20 strokes)
run a clean patch through your bore until it shows no signs of copper. You
may have to repeat steps 5 through 7 until it is clean.
- Use a
good bore cleaner (not a copper remover) to clean the bore completely of
the copper remover afterwards.
you have cleaned after each shot you will be able to tell when your bore
is no longer
copper fouling. Once you have seen this you can move on to cleaning after
every 3 to 5 shot group. This should be done for the next 40 rounds.
which it is probably wise for you to check your barrel after each day of shooting
or at least every 25 rounds.
Certified 416R Rifle Barrel Steel
Certified 4140 Rifle Barrel Steel
Lite .624” Muzzle
CTR/Continental .783” Muzzle
Varmint/Tactical .890” Muzzle