Bulgarian 1955 7.62x54r Lead Core Heavy Ball
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Although some lots have problems with split necks and show signs of poor storage conditions, this ammunition is reasonably accurate and reliable.

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(Reference number 016)

Case Over all Length Powder
Headstamp Material Coating Water Volume Min. Max. Weight
"10" (country) over "55" (year) brass none 63.9 gr. 3.007" 3.017" 47.2 gr.

 

Bullet
Dia. Length Weight Style Core Tip Color Magnetic? Ballistic
Coefficient		 Sectional
Density
.311" 1.313" 182.0 gr. spitzer boat tail lead yellow yes 0.368 0.269

 

Package
10 rounds per paper wrap 300 rounds per tin
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Measured Muzzle Velocity in Feet per Second (10 shot string)
Rifle M44 M28 M91/30 M91 (Finnish) M91 (Russian)
Low 2485 2560 2609 2648 2534
High 2521 2596 2644 2703 2584
Average 2499 2576 2621 2682 2556
Extreme Spread 36 36 35 55 50
Standard Deviation 16 17 17 22 20
Trajectory and Drop Graph
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Notes on the graphs  The graphs above each represent two sets of data.  The red line is the path of the bullet fired from the rifle with the sights zeroed at 200 yards.   The bullet exits the muzzle at a distance a fraction of an inch below zero inches.   This represents the height of the sight over the centerline of the bore.  The bullet rises above zero in a trajectory that then passes through zero again at 200 yards and continues downward.  The blue line is the the bullet drop in inches for the distance traveled.  This begins at the muzzle at zero inches and decreases with distance not taking sight height or zero distance into account.

 

Trajectory Comparison Graph
This graph combines the trajectories of the 5 graphs above to compare the performance of the test rifles.
Click on the graph for a large, scalable PDF to zoom in for better detail clarity.  Adobe Reader required.

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Bullet Velocity to 500 yards in Feet per Second
Distance (yds) 0 50 100 150 200 250 300 350 400 450 500
M44 2499 2383 2270 2160 2052 1948 1847 1750 1658 1569 1484
M28 2576 2457 2342 2230 2121 2015 1911 1812 1717 1626 1538
M91/30 2621 2502 2385 2272 2162 2055 1950 1849 1752 1660 1571
M91 (Finnish) 2682 2561 2443 2328 2216 2108 2002 1899 1800 1706 1615
M91 (Russian) 2556 2438 2324 2212 2104 1998 1895 1796 1702 1611 1524

 

Bullet Energy to 500 yards in Foot Pounds
Distance (yds) 0 50 100 150 200 250 300 350 400 450 500
M44 2524 2294 2081 1884 1702 1533 1378 1238 1111 995 890
M28 2681 2440 2216 2009 1818 1640 1476 1327 1191 1068 956
M91/30 2776 2529 2299 2086 1888 1706 1537 1381 1241 1113 997
M91 (Finnish) 2907 2650 2411 2190 1985 1795 1619 1457 1309 1175 1054
M91 (Russian) 2641 2403 2182 1977 1788 1614 1451 1304 1170 1049 939

 

Recoil
Rifle M44 (Soviet) M28 (Finnish) M91/30 (Soviet) M91 (Finnish) M91 (Russian)
Weight (Pounds) 8.25 lbs 9.75 lbs 8.56 lbs 9.50 lbs 9.38 lbs
Recoil Velocity (Feet per Second) 10.9 fps 9.9 fps 11.5 fps 10.7 fps 10.3 fps
Recoil Energy (Foot-Pound) 15.3 ft-lb 15.0 ft-lb 17.7 ft-lb 16.8 ft-lb 15.4 ft-lb
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