Lapua 1973 7.62x54r D47 Match
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This ammo came on the market in the spring of 2005 and was sold at a deep discount considering the current retail price of new Lapua Match.  Apparently it was old inventory from a distributor that had gone out of business and it seems that the ammo wasn't properly stored at some time.  About 25% of the cases burned through the side wall upon firing and the accuracy was not what it should be as seen on the targets at the bottom of the page.  Several bullets were pulled and corrosion was found on the bullet bases as well as the inside walls of the cases which have a green tint to them.

Ammunition provided by "kriggevaer" of Gunboards.com

ammo027a.JPG (14906 bytes) ammo027b.JPG (34711 bytes) ammo027c.JPG (47699 bytes)

(Reference number 027)

Case Over all Length Powder
Headstamp Material Coating Water Volume Min. Max. Weight
"LAPUA" over "7.62x53R" brass none 60.2 gr. 2.982" 2.990" 43.2 gr.

 

Bullet
Dia. Length Weight Style Core Tip Color Magnetic? Ballistic
Coefficient
Sectional
Density
.308" 1.324" 185.4 gr. spitzer boat tail lead none no 0.547 0.279

 

Package
20 rounds per cardboard box
ammo027d.JPG (85075 bytes)

 

Measured Muzzle Velocity in Feet per Second (10 shot string)
Rifle M44 M28 M91/30 M91 (Finnish) M91 (Russian)
Low 2436 2416 2401 2480 2327
High 2606 2493 2498 2611 2420
Average 2500 2451 2431 2541 2379
Extreme Spread 170 77 97 131 93
Standard Deviation 56 30 30 48 31
Trajectory and Drop Graph
(click on the thumbnails)
20050701013.jpg (101378 bytes) 20050701014.jpg (101899 bytes) 20050701015.jpg (101958 bytes) 20050701016.jpg (101279 bytes) 20050701017.jpg (100983 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.

20050701013thru17.jpg (87814 bytes)

 

Bullet Velocity to 500 yards in Feet per Second

Distance (yds) 0 50 100 150 200 250 300 350 400 450 500
M44 2500 2421 2344 2268 2194 2121 2049 1979 1909 1842 1777
M28 2451 2373 2297 2222 2148 2076 2005 1936 1867 1801 1737
M91/30 2431 2354 2278 2203 2130 2058 1988 1918 1851 1785 1722
M91 (Finnish) 2541 2462 2384 2308 2232 2159 2086 2015 1945 1877 1811
M91 (Russian) 2379 2302 2227 2154 2081 2010 1940 1872 1806 1742 1679

 

Bullet Energy to 500 yards in Foot Pounds

Distance (yds) 0 50 100 150 200 250 300 350 400 450 500
M44 2567 2407 2256 2113 1977 1847 1724 1608 1497 1394 1297
M28 2467 2313 2167 2028 1896 1770 1651 1539 1432 1333 1240
M91/30 2428 2276 2131 1994 1864 1740 1623 1511 1407 1309 1217
M91 (Finnish) 2653 2490 2334 2187 2047 1914 1788 1668 1554 1447 1346
M91 (Russian) 2324 2177 2037 1905 1779 1660 1546 1440 1340 1246 1158

 

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) 10.7 fps 8.9 fps 10.1 fps 10.0 fps 9.0 fps
Recoil Energy (Foot-Pound) 14.9 ft-lb 12.1 ft-lb 13.6 ft-lb 14.6 ft-lb 11.9 ft-lb

 

Targets (100 yards from a bench with a sandbag)
M44 (Soviet) M28 (Finnish) M91 (Finnish)
ammo027M44.JPG (54518 bytes) ammo027M28.JPG (52421 bytes) ammo027M91F.JPG (54565 bytes)
10 shots, 5.75" extreme spread 10 shots, 4.75" extreme spread 9 shots, 4.5" extreme spread


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