Complete Machine Instructions
Barrel
Material:
AISI
4140
Harden to: Br 255-277
1
56
,
b
-
_
-
-
_-
-
A_
-__..--
-_
_.
)--_
-
28
~4
1
23
d
4.6
--J
9.65
+
.05
1.32
+
.05
-
+
.03
Twist:
1
Number
!
’
I-
__I__
1s
75
+
02
_~--.--__
.-
-.
_
_____
/250mm
RI-I
of
grooves:
6
_________-.__
----- 22
-80
rpf_
Groove width: 2.5
+
.02
Bore diameter:
8.M
+ .02
Rifling diameter:
9.06
+
-05