Instruction Manual

31
7. Exchanging Barrels
There are 6 caliber groups (refer to table on p. 32).
When changing from one caliber group to another
during a barrel exchange, the bolt head has to
be changed as well, so that it corresponds to the
caliber group of the interchangeable barrel actually
mounted. Please refer to the table on page 32
for proper allocation of suitable interchangeable
barrels. Furthermore, bolt heads and barrels are
imprinted with a symbol for the respective caiber
group. These markings have to compare after assembly
is completed.
Within one caliber group, barrels may be inter-
changed at random, without having to exchange
the bolt head.
Caliber groups:
Mini stamp MI
Standard stamp ST
Medium stamp ME
Magnum stamp MA
Jeffery stamp JE
10,3 x 60 R stamp CH
Make sure that the magazine insert of the corre-
sponding caliber is installed, when performing a
barrel exchange. The caliber denominations are
marked on the side of the magazine insert (refer
to Para. 7.2).
NOTE:
With the barrel of the caliber 10,3x60R, a single
shot insert is supplied. A magazine is not available.
7.1.
Exchanging the barrel
• Decock and unload rifle.
• Pull bolt assembly all the way back and remove it.
• Loosen both barrel fastening nuts completely,
using Allen key (SW5). The nuts remain ceptive
and cannot be lost.
• Lift barrel out of receiver.
• Put exchange barrel into its channel inside re-
ceiver.
• Fasten the two barrel fastening nuts handtight
with the Allen key.
R8 with spare magazine:
• Insert the magazine insert corresponding to the
caliber of the barrel from above into the spare
magazine until both magazine buttons lock into
position with audible clicks (refer to Para. 7.2.).
R8 without spare magazine:
• Remove magazine insert (possibly, the scope has
to be removed for this, refer to Para.12.2).Insert
the magazine insert corresponding to the calib-
er of the exchange barrel from above into the
magazine well.
• Check, whether the caliber group marked on
the bolt head ("MI", "ST", "ME", "MA", "JE",
"CH", refer to Para. 7 and Fig. 7.1.) corresponds
with the caliber group of the exchange barrel.
• If the bolt head in the receiver has to be ex-
changed: refer to Para. 8.
NOTE:
Always ensure that the barrel channel is clean! Ex-
cessive oil or gun grease between barrel and receiv-
er has a negative effect on the precision of the rifle.
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