Combat Arms 2869 Grove Way Castro Valley, California 94546 Telephone (415) 538-6544 BBS Phone: (415) 537-1777 RELOADING DATA FOR THE 7.62x39mm CARTRIDGE The following data was received from Hornaday Manufacturing Co. and is actually "unofficial" information. The following disclaimer was appended to the original sheet received at Combat Arms. ๒€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ภ า NOTICE OF DISCLAIMER า า า า This data was developed in the า า Hornaday Mfg. Co. test facilities า า under controlled conditions using า า pressure barrels. As components and า า conditions may vary, the reloader า า should approach maximum loads with า า extreme caution. Hornaday Mfg. Co. า า disclaims all responsibility for า า mishaps which might occur from use า า of this data. า ห€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€๔ This data was based on the following information: Bullet Hornaday 123 grain soft point (.311 diameter) Rifle Chinese SKS Barrel Factory standard Length 20 inches Twist 1 in 9วinches Primer Winchester 120 Case Midway C.O.L. 2.190 inches ๒€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ภ า VELOCITY IN F.P.S. า ๒€€€€€€€€€€€€€€€€€€€€€€€€€€ๅ€€€€€€€€ๅ€€€€€€€€ๅ€€€€€€€€ๅ€€€€€€€€ซ า POWDER า 2000 า 2100 า 2200 า 2300 า 2400 า ฎ๊๊๊๊๊๊๊๊๊๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊ต าHogdens H322 า 25.0 า 26.2 า 27.3 า 28.5 า N/A า ฬ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ซ าIMR 4198 า 22.0 า 22.8 า 23.7 า 24.6 า N/A า ฬ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ซ าNorma N-200 า 22.1 า 23.4 า 24.6 า 25.8 า N/A า ฬ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ซ าRL-7 า 21.9 า 23.0 า 24.2 า 25.4 า 26.6 า ห€€€€€€€€€€€€€€€€€็€€€€€€€€€็€€€€€€€€็€€€€€€€€็€€€€€€€€็€€€€€€€€๔ For further information on the Hornaday data, please write: Hornaday Manufacturing Co. P.O. Box 1848 Grand Island, NE 68802 The information on the following two pages is taken from pages 202 and 203 of the Sierra Bullets Reloading Manual, second edition, copyright 1978. "The 7.62x39mm cartridge was designed in 1943 in the Soviet Union and is now their standard service rifle cartridge, as well as for most of the communist bloc countries and some others. It is sometimes called the `world's most popular cartridge' because well over one billion weapons have been produced for it. Its popularity in this country is directly related to the many Russian SKS semiautomatic rifles brought back to the U.S. by our servicemen returning from Viet Nam. Lake City Arsenal at one time produced boxer primed ammunition for use in captured SKS and AK-47 rifles in Viet Nam. "Most SKS rifles have grooves diameters of .311" to .313". Our test rifle, a new Sako Vixen L461 Sporter, has a groove diameter of .312". Sierra's 110 and 125 grain .308 bullets at higher velocities showed better accuracy than the Sako factory ammo. Our 150 grain .311 bullet produced groups less than one minute of angle in the Sako rifle. "While the 7.62x39mm is not a big game cartridge, availability of boxer primed Sako brass and a good selection of bullets make it a good small game and plinking round." SIERRA 110 GRAIN .308 HOLLOW BULLET Sectional density: 0.166 Ballistic coefficients: 0.188 at 3300 fps 0.191 at 2800 fps 0.201 at 2200 fps 0.227 at 1500 fps 0.245 at 1000 fps ๒€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ภ า VELOCITY IN F.P.S. า ๒€€€€€€€€€€€€€€€€€€€€€€€€€€ๅ€€€€€€€€ๅ€€€€€€€€ๅ€€€€€€€€ๅ€€€€€€€€ซ า POWDER า 2200 า 2300 า 2400 า 2500 า 2600 า ฎ๊๊๊๊๊๊๊๊๊๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊ต าIMR 4227 า 19.3 า 20.7 า 22.1 า 23.5 า 24.8 า ฬ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ซ าWinchester 680 า 20.5 า 21.7 า 22.9 า 24.1 า 25.3 า ฬ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ซ าNorma N-200 า 26.0 า 27.2 า 28.4 า 29.6 า 30.8 า ฬ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ซ าIMR 4198 า 23.0 า 24.3 า 25.6 า 26.8 า N/A า ห€€€€€€€€€€€€€€€€€็€€€€€€€€€็€€€€€€€€็€€€€€€€€็€€€€€€€€็€€€€€€€€๔ The rightmost load shown for each type of powder indicates maximum safe loads - U S E C A U T I O N ! Loads less than the minimum charges shown are not recommended. For the latest information, please consult the current issue of the Sierra Bullets Reloading Manual. This data is presented by Combat Arms for informational purposes only and in no way does it guarantee correct loads. SIERRA 125 GRAIN .308 SPITZER BULLET Sectional density 0.188 Ballistic coefficients: 0.340 at 3100 0.325 at 2400 ๒€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ภ า VELOCITY IN F.P.S. า ๒€€€€€€€€€€€€€€€€€€€€€€€€€€ๅ€€€€€€€€ๅ€€€€€€€€ๅ€€€€€€€€ซ า POWDER า 2200 า 2300 า 2400 า 2500 า ฎ๊๊๊๊๊๊๊๊๊๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊ต าIMR 4227 า 20.6 า 21.9 า 23.1 า 23.5 า ฬ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ซ าWinchester 680 า 20.9 า 22.2 า 23.5 า 24.1 า ฬ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ซ าNorma N-200 า 25.9 า 27.1 า 28.3 า 29.6 า ฬ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ซ าIMR 4198 า 23.7 า 25.0 า 26.3 า N/A า ห€€€€€€€€€€€€€€€€€็€€€€€€€€€็€€€€€€€€็€€€€€€€€็€€€€€€€€๔ The rightmost load shown for each type of powder indicates maximum safe loads - U S E C A U T I O N ! Loads less than the minimum charges shown are not recommended. For the latest information, please consult the current issue of the Sierra Bullets Reloading Manual. This data is presented by Combat Arms for informational purposes only and in no way does it guarantee correct loads. €€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ SIERRA 150 GRAIN .311 SPITZER BULLET Sectional density 0.222 Ballistic coefficients: 0.401 at 3100 ๒€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ภ า VELOCITY IN F.P.S. า ๒€€€€€€€€€€€€€€€€€€€€€€€€€€ๅ€€€€€€€€ๅ€€€€€€€€ๅ€€€€€€€€ซ าPOWDER า 1900 า 2000 า 2100 า 2200 า ฎ๊๊๊๊๊๊๊๊๊๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊ฏ๊๊๊๊๊๊๊๊ต าIMR 4227 า 17.2 า 18.8 า 20.4 า 22.0 า ฬ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ซ าWinchester 680 า 17.7 า 19.3 า 20.9 า 22.5 า ฬ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ซ าNorma N-200 า 22.3 า 23.6 า 24.9 า 26.1 า ฬ€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€ซ าIMR 4198 า 20.6 า 22.0 า 23.3 า 24.6 า ห€€€€€€€€€€€€€€€€€็€€€€€€€€€็€€€€€€€€็€€€€€€€€็€€€€€€€€๔ The rightmost load shown for each type of powder indicates maximum safe loads - U S E C A U T I O N ! Loads less than the minimum charges shown are not recommended. For the latest information, please consult the current issue of the Sierra Bullets Reloading Manual. This data is presented by Combat Arms for informational purposes only and in no way does it guarantee correct loads. €€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€