rifle. CIP recommends that rifling commence at from the case mouth reflecting the longer leade provided by Weatherby in the early 1960s. SAAMI recommends the present leade provided by Weatherby of . Twist rate is given as 1 in 16 by Weatherby which would stabilize bullets up to and mono-metal bullets. Weatherby provides a six-groove contour No. 4 barrel for the .460 Weatherby Magnum. Ø land is given at and Ø groove is . The recommended land arc width by both SAAMI and CIP is . Performance The .460 Weatherby Magnum cartridge is very accurate despite its size. Weatherby guarantees a 1.5 MOA (44mm/100m) accuracy for this cartridge in a Weatherby rifle. Typically a full-metal-jacketed or monolithic solid type bullet will penetrate more than when impacting a dangerous game animal such as the Cape buffalo or African elephant. The .460 Weatherby Magnum has few peers for stopping dangerous African game. Compared to its contemporaries, the 460 Weatherby Magnum has more energy at 150 yards than the .458 Winchester Magnum does at the muzzle and at 100 yards more energy than the .458 Lott with factory ammunition. The .460 Weatherby Magnum provides a significant step up in performance over other production .458 caliber (11.6 mm) cartridges. The increased performance is realized in terms of both remaining energy and extended range. The .460 Weatherby Magnum, like the .375 H&H Magnum, is a relatively flat shooting cartridge. The maximum point blank range (MPBR) for the Weatherby load is . The Weatherby factory ammunition has a maximum point blank range of . These trajectories compare well with those of the .375 H&H Magnum. At Hornady's Interlock .375 H&H Magnum's bullet drops while Hornady's DGX bullet drops . In contrast the .460 Weatherby Magnum's (B460450TSX) drops and the (H460500FJ) drops . The .460 Weatherby Magnum, however, averages over 75% greater energy than the .375 H&H Magnum. Compared to the more popular .458 Winchester Magnum and the .458 Lott, the .460 Weatherby Magnum provides a flatter trajectory, dropping less than at when sighted in at with the 450 gr. Barnes TSX Weatherby ammunition. With the FMJ or RN Weatherby ammunition bullet drop is at the same range. The .458 Winchester Magnum and the .458 Lott have a and MPBR respectively in comparison. The FMJ or RN Weatherby ammunition shoot to the same point of impact, which is necessary in a dangerous game cartridge as hunters may