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The stigma of tekhkontrol
Tested heavy load
Tested for accuracy
The muzzle constriction
The caliber, the length of the chamber
The allowable gas pressure in the chamber
Tula arms plant


Izhevsk mechanical plant
Some parameters and characteristics of the hunting shotguns of the USSR (Russia), brands, gear, ammo.

Before you go on sale, shotguns are tested in factory conditions. One of the main is the test of power charge, which creates in the channels of the trunks of high blood pressure. The procedure and test conditions are different in different countries and factories. The rifles have successfully passed such tests put special stamps.

The main shotgun stigma of domestic (Russia, USSR) shotguns:


The caliber of the rifle

The average weight of rifle, kg


The weight of a round bullet, g
Weight of powder charge, g

The weight of the projectile fractions, g
type smokeless "Sokol"
in the summer
in the winter
10
12
16
20
28
32
3,8
3,1
2,9
2,6
2,3
2,2
45,4
37,8
28,3
22,7
16,2
14,2
2,2
2.0
1,7
1,4
1,1
0,8
2,4
2,2
1,8
1,5
1,2
0,9
38-40
32-36
28-30
23-24
16-18
14-15
The recommended gunpowder and projectile fractions:

Caliber

                Under the paper (cardboard) sleeve
International
USSR, Russia
Belgium
GDR
10
19,7
          -
    19,3-19,6
19,3-19,7
12
18,5
   18,5-18,7
18,2-18,5
18,2-18,6
16
16,8
   17,0-17,2
16,6-16,9
16,8-17,2
20
15,6
   15,5-15,7
15,6-15,9
15,7-16,1
24
14,7
         -
14,7-15,0
14,7-15,1
28
14,0
   14,0-14,2
13,4-13,7
13,8-14,2
32
-
   12,5-12,7
13,0-13,2
12,7-13,1
Gauges (Caliber) of shotguns ( dimensions in mm):
CHARACTERISTICS OF MUZZLE OF THE CONTRACTIONS
No. muzzle narrowing
The magnitude of contraction in mm
Name
1
0,25
Cylinder head
2
0,50

semi-choke
3
0,75

choke
4
1,00

choke
5
1,25

reinforced choc
The following table shows the value of the shot flight speed (m/s) at different distances for cylindrical shafts with an initial emission rate of 375 m/s
(Handbook of the hunter Under the editorship of M. S. Dolbik)

Gunpowder "Sokol" gives the normal weight of the charge of shot initial speed of approximately 375-400 m/s. The shotun should ensure the defeat of the game 4-5 pellets of the respective rooms. Speed of shot at the moment of defeat should be not less than 190-200 m/s

Distance, m
                                                                        Diameter shot, mm
Diameter of canister in mm
1,75
2,0
2,25
2,50
2,75
3,0
3,5
4,0
5,0
         6,0
         8,0
                                                                           Number of shot
10
9
8
7
6
5
3
1
0000
5
332
337
341
344
346
348
352
354
356
358
361
10
285
293
300
306
311
315
321
326
333
338
345
15
248
259
269
276
283
288
297
304
316
322
332
20
218
231
242
251
259
266
277
285
298
308
320
25
196
209
220
230
239
246
258
268
284
296
311
30
174
187
199
210
221
230
245
256
271
283
300
35
156
170
183
194
204
213
228
240
258
272
290
40
139
154
167
178
189
199
215
228
248
261
281
50
109
125
140
153
164
174
191
205
227
243
264
60
86
102
116
129
141
151
168
183
208
225
248
70
68
82
96
108
120
131
150
166
191
209
235
80
54
65
79
91
103
113
133
150
174
193
221
90
43
53
65
77
88
98
117
135
161
180
210
100
39
47
57
66
76
85
104
123
150
170
199
Sources:
1. Directory of hunter under the editorship of M. S. Dolbik. Minsk, Harvest, 1988.
2. Directory of hunter. Publishing house Kolos, Moscow - 1964.
Birch branch