seconds. 7BZ3 A variant of the B-32, an armor-piercing/incendiary bullet designed to defeat lightly armored targets. The bullet has a black-red tip. 7N1 A sniper round designed for improved accuracy. The tip of the bullet is uncoloured. R50 at means the closest 50% of the shot group will all be within a circle of the mentioned diameter at . R100 at means every shot of the shot group will be within a circle of the mentioned diameter at . Availability 7.62×54mmR is widely available both as military surplus and new production, but less so for match-grade rounds. Most surplus ammunition is steel-cased and uses Berdan primers, which effectively hinders its use for handloading. However, with the increased popularity of surplus Eastern-bloc Mosin–Nagant, SVT-40, and PSL rifles in the United States, Boxer-primed ammunition and unfired cases are increasingly available; these cases take large rifle primers. Cartridge derivatives USSR/Russia 6.5×54mmR: necked-down version, used in both converted Mosin biathlon rifles and Vostok-brand biathlon rifles in the 1960s and 1970. 9×53mmR: hunting cartridge. 9.6×53mmR Lancaster: hunting cartridge. Finland 7.62×53mmR: military cartridge. 8.2×53mmR: hunting cartridge. 9.3×53mmR: hunting cartridge. List of 7.62×54mmR firearms Rifles 3,004 Berdan II rifles were converted to 7.62×54mmR for Russian service by arms makers in Belgium. The various Mosin–Nagant bolt-action rifles including the sawn-off "Obrez" pistol The American Winchester Model 1895. Approximately 300,000 made for the Russian army in 1915–16. AVB-7.62 AVS-36 Berkut-2M1 Dragunov sniper rifle (including Chinese NDM-86 variant) IZH-18MH JS 7.62 Winchester 1895 (7.62x54R ver) M91 PSL sniper rifle Chukavin sniper rifle SVT-38 and SVT-40 SV-98 (Snaiperskaya Vintovka Model 1998) Alejandro Sniper Rifle Dragunov SVU (1991 redesign of the Dragunov sniper rifle) Vepr sporting rifle MTs-13, 300m sporting rifle AVL, Service rifle lightweight, based on Los AV, Mosin based standard service rifle TsVR, Rekord, Rekord-1, Rekord CISM, KO-13—service rifle TsVT, Typhoon 300m sporting rifle CAVIM Catatumbo sniper rifle Zastava M91 sniper rifle Machine guns 2B-P-10 AEK-999 Degtyaryov machine gun (DP28)/(RP-46) DS-39 GShG-7.62 machine gun Hua Qing Minigun Madsen machine gun MG42 (Finnish conversion efforts) PK machine gun (also known as PKM) PKP "Pecheneg" machine gun PM M1910 PV-1 machine gun Slostin machine gun Savin-Narov machine gun SG-43 Goryunov ShKAS machine gun Type 53/57 machine gun Type 67 machine gun and Type 80 machine gun. Type 73 light machine gun Uk vz. 59 Zastava M84 Alternative names While the only official nomenclature for the cartridge is 7.62x54R ("R" standing for "rimmed"),