Czechoslovakian 1953 7.62x54r Lead Core Heavy Ball
All content copyright © 7.62x54r.net
Return to 7.62x54r Ammunition Introduction

While not as common as the later steel core light ball from Czechoslovakia, this ammunition is just as reliable and accurate.  However, the lacquer coated cases may cause extraction problems if the chamber is not clean.

ammo012a.JPG (12625 bytes) ammo012b.JPG (32209 bytes) ammo012c.JPG (51321 bytes)

(Reference number 012)

Case Over all Length Powder
Headstamp Material Coating Water Volume Min. Max. Weight
"aym" (factory) over "53" (year) steel lacquer 62.5 gr. 3.003" 3.015" 46.9 gr.

 

Bullet
Dia. Length Weight Style Core Tip Color Magnetic? Ballistic
Coefficient		 Sectional
Density
.310" 1.300" 181.9 gr. spitzer boat tail lead yellow yes 0.421 0.271

 

Package
20 rounds per cardboard box 780 rounds per wooden crate
ammo012d.JPG (43287 bytes) ammo012e.JPG (73829 bytes)

 

Measured Muzzle Velocity in Feet per Second (10 shot string)
Rifle M44 M28 M91/30 M91 (Finnish) M91 (Russian)
Low 2421 2521 2566 2580 2503
High 2459 2571 2607 2623 2546
Average 2436 2542 2592 2597 2521
Extreme Spread 38 50 41 43 43
Standard Deviation 17 21 17 16 16
Trajectory and Drop Graph
(click on the thumbnails)		 20041231032.jpg (102111 bytes) 20041231033.jpg (102292 bytes) 20041231034.jpg (101900 bytes) 20041231035.jpg (101339 bytes) 20041231036.jpg (101342 bytes)
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.

20041231032thru36.jpg (84984 bytes)

 

Bullet Velocity to 500 yards in Feet per Second
Distance (yds) 0 50 100 150 200 250 300 350 400 450 500
M44 2436 2335 2237 2142 2048 1957 1868 1783 1701 1621 1544
M28 2542 2439 2338 2240 2145 2051 1960 1871 1785 1703 1623
M91/30 2592 2488 2387 2287 2191 2096 2004 1913 1826 1742 1662
M91 (Finnish) 2597 2493 2391 2292 2195 2101 2008 1918 1830 1746 1665
M91 (Russian) 2521 2418 2318 2221 2125 2032 1941 1853 1768 1687 1608

 

Bullet Energy to 500 yards in Foot Pounds
Distance (yds) 0 50 100 150 200 250 300 350 400 450 500
M44 2397 2204 2023 1854 1695 1548 1410 1284 1168 1062 964
M28 2610 2403 2209 2028 1858 1700 1552 1414 1288 1172 1065
M91/30 2715 2502 2301 2114 1939 1775 1622 1479 1347 1227 1116
M91 (Finnish) 2726 2512 2311 2123 1947 1783 1629 1486 1354 1232 1121
M91 (Russian) 2567 2363 2171 1992 1825 1669 1523 1387 1263 1149 1044

 

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) 10.6 fps 9.9 fps 11.4 fps 10.4 fps 10.2 fps
Recoil Energy (Foot-Pound) 14.6 ft-lb 14.8 ft-lb 17.5 ft-lb 15.9 ft-lb 15.2 ft-lb
All content copyright © 7.62x54r.net
Return to 7.62x54r Ammunition Introduction