Rifle hunting ammunition with Sierra bullets

SBT GameKing® – Spitzer Boat Tail bullets are designed for hunting at long range, where their extra margin of performance can make the critical difference. GameKing® bullets feature a boat tail design to bring hunters the ballistic advantage of match bullets. The streamlined tapered base of the boat tail bullet greatly reduces drag, which results in higher retained velocity, greater striking energy, a flatter trajectory and less wind drift than comparable flat base bullets.

Designed for hunting at long range.

SBT GameKing® – Spitzer Boat Tail bullets are designed for hunting at long range, where their extra margin of performance can make the critical difference. GameKing® bullets feature a boat tail design to bring hunters the ballistic advantage of match bullets. The streamlined tapered base of the boat tail bullet greatly reduces drag, which results in higher retained velocity, greater striking energy, a flatter trajectory and less wind drift than comparable flat base bullets.

Caliber & Catalog №BulletCartridgeVelocityEnergyTest barrel lengthPower Factor EstimatedPoints of impactMRDBallistic coefficient
NumberTypeWeightDiameterSectional DensityMaterial of jacketWeightLengthVmuzzleV100V200V300V400EmuzzleE100E200E300E40050 y100 y200 y300 y400 yCalculationCalculation
grsginlb/in²ginfpsft·lbinkgr·fpsinyG1G7
22-250 REM.
Cartridge 22-250 REM. SBT 55 GRSSB22250A1365SBT553.600.2240.157N/A16.52.3463,6813,2432,8252,4352,0771,6551,28497572452723½202.5-0.60.0-1.3-7.0-18.7255.90.2510.117
6,5 × 55 SE
Cartridge 6,5 × 55 SE SBT 140 GRS1730SBT1409.100.2640.287N/A24.22.9922,3722,1922,0201,8551,6981,7491,4931,2681,07089623½332.1-0.20.0-5.3-19.0-43.0179.40.4630.234
7 × 57
Cartridge 7 × 57 SBT 175 GRS1940SBT17511.350.2840.310N/A25.03.0712,4112,2602,1141,9741,8382,2591,9841,7361,5131,31323½421.9-0.20.0-4.8-17.4-39.0184.80.5620.282
7 × 57 R
Cartridge 7 × 57 R SBT 175 GRS1940SBT17511.350.2840.310N/A25.03.0712,4112,2602,1141,9741,8382,2591,9841,7361,5131,31323½421.9-0.20.0-4.8-17.4-39.0184.80.5620.282
7 × 64
Cartridge 7 × 64 SBT 175 GRS1940SBT17511.350.2840.310N/A25.93.3072,5232,3672,2172,0731,9342,4732,1771,9101,6701,45423½441.5-0.30.0-4.2-15.5-34.9192.50.5620.282
7 × 65 R
Cartridge 7 × 65 R SBT 175 GRS1940SBT17511.350.2840.310N/A25.63.2912,5922,4342,2812,1351,9942,6102,3012,0221,7701,54426¾453.6-0.30.0-3.9-14.4-32.6197.90.5620.282
7 mm REM. MAG.
Cartridge 7 mm REM. MAG. SBT 175 GRS1940SBT17511.350.2840.310N/A30.13.2872,7952,6312,4712,3182,1693,0362,6892,3732,0871,82824489.1-0.40.0-3.0-11.8-27.0213.30.5620.282
308 WIN.
Cartridge 308 WIN. SBT 180 GRS2160SBT18011.700.3080.271N/A26.02.7992,4742,2762,0871,9081,7372,4452,0701,7411,4551,20523½445.3-0.20.0-4.7-17.5-39.8185.90.4340.218
30-06 SPRING.
Cartridge 30-06 SPRING. SBT 180 GRS2160SBT18011.700.3080.271N/A27.43.2402,5792,3762,1831,9991,8242,6572,2561,9041,5971,32923½464.2-0.30.0-4.2-15.7-35.9193.60.4340.218
300 WIN. MAG.
Cartridge 300 WIN. MAG. SBT 200 GRS2165SBT20012.960.3080.301N/A33.33.3392,7402,5672,4012,2402,0873,3322,9262,5592,2291,93423½548.0-0.40.0-3.3-12.6-28.9207.80.5300.266
8 × 57 JRS
Cartridge 8 × 57 JRS SBT 220 GRS2420SBT22014.260.3230.301N/A28.63.1102,2872,1301,9791,8341,6932,5542,2151,9121,6421,40123½503.1-0.10.0-5.7-20.3-45.2175.00.5260.263
8 × 57 JS
Cartridge 8 × 57 JS SBT 220 GRS2420SBT22014.260.3230.301N/A28.63.1102,4052,2432,0871,9381,7942,8252,4572,1281,8351,57323½529.1-0.20.0-4.9-17.8-40.0183.70.5260.263