AmmunitionCartridges

.300 Wby. Mag.

By far the most popular and versatile Weatherby® cartridge available. The .300 Weatherby® Magnum had the flattest trajectory, longest range and the greatest killing power of any .300 magnum on the market until the .30-378 Weatherby® Magnum came along. Based on the .300 H&H Magnum, the .300 Weatherby® delivers 300 more fps than its British cousin. Introduced in 1944, this is the all-around cartridge for the big game hunter.

.300 Weatherby® Magnum is available in Mark V® models: Ultra Lightweight (RH and LH), Accumark (RH and LH), Accumark RC, Deluxe, Lazermark, Sporter, Fibermark Composite, Ultramark and Euromark. Also available in Vanguard® Series 2 models: Synthetic, Synthetic Package, Stainless Synthetic, Sporter, and Deluxe, Range Certified and Back Country.

20 cartridges per box.

This product is not eligible for overnight or 2-day shipping.

$43.00

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CaliberWeight GrainsBullet TypeSuggested UsageB/CPrice 
.300 Wby.150PartitionM.387$90.00
.300 Wby.165SPM.387$67.00
.300 Wby.165Barnes TSXMB.398$90.00
.300 Wby.165BSTM.475$78.00
.300 Wby.180SpitzerMB.331$43.00
.300 Wby.180SPMB.425$67.00
.300 Wby.180Barnes TSXMB.453$90.00
.300 Wby.180BSTMB.507$78.00
.300 Wby.180AccubondMB.507$90.00
.300 Wby.180PartitionMB.474$90.00
.300 Wby.200PartitionMB.481$90.00
.300 Wby.150SPM.338$67.00
.300 Wby.130Barnes TTSXM.350$90.00

USAGE: V - Varmint; M - Medium Game (Deer, Sheep, Pronghorn, Black Bear); B - Big Game (Elk, Moose, Grizzly); A - African Big Game (Elephant, Cape Buffalo, Rhino, Lion)
BULLET TYPE: SP - Spire Point; Rn-EX - Round Nose-Expanding; FMJ - Full Metal Jacket; Barnes TSX - Barnes® TSX™; Barnes TTSX - Barnes® TTSX™; Partition - Nosler® Partition® Flat Base; BST - Nosler® Ballistic Tip®; Accubond - Nosler® Accubond®; Spitzer - Norma® Spitzer

Ballistics Specs PDF

Trajectory Comparison

.300 Wby.
Bullet B/C Path of Bullet
(Above or below line-of-sight of rifle scopes mounted 1.5" above bore)
Wt. Grains Bullet Type 100 Yds 200 Yds 300 Yds 400 Yds 500 Yds
150 Partition .387 2.50 3.20 0.00 -7.70 -20.90
165 SP .387 2.80 3.50 0.00 -8.50 -23.10
165 Barnes TSX .398 2.90 3.70 0.00 -9.00 -24.20
165 BST .475 2.70 3.40 0.00 -8.10 -21.40
180 Spitzer .331 3.60 4.42 0.00 -10.91 -29.97
180 SP .425 3.10 3.80 0.00 -9.00 -24.40
180 Barnes TSX .453 2.95 3.69 0.00 -8.81 -23.61
180 BST .507 2.80 3.60 0.00 -8.40 -22.40
180 Accubond .507 2.90 3.60 0.00 -8.40 -22.40
180 Partition .474 3.00 3.70 0.00 -8.60 -23.10
200 Partition .481 3.50 4.20 0.00 -9.80 -26.20
150 SP .338 2.60 3.30 0.00 -8.20 -22.60
130 Barnes TTSX .350 2.28 3.03 0.00 -7.58 -20.71
.270 Wby.
Bullet B/C Path of Bullet
(Above or below line-of-sight of rifle scopes mounted 1.5" above bore)
Wt. Grains Bullet Type 100 Yds 200 Yds 300 Yds 400 Yds 500 Yds
130 Spitzer .359 3.10 3.90 0.00 -9.50 -25.90
130 Barnes TSX .466 2.60 3.30 0.00 -7.90 -21.00
130 Partition .416 2.80 3.50 0.00 -8.30 -22.40
140 Accubond .496 2.76 3.43 0.00 -8.10 -21.58
140 BST .456 2.90 3.60 0.00 -8.40 -22.60
150 SP .462 3.00 3.70 0.00 -8.70 -23.30
150 Partition .465 3.00 3.70 0.00 -8.70 -23.20
110 Barnes TTSX .377 2.43 3.17 0.00 -7.84 -21.27

Energy Comparison

.300 Wby.
Bullet B/C Energy (Foot-Pounds)
Wt. Grains Bullet Type Muzzle 100 Yds 200 Yds 300 Yds 400 Yds 500 Yds
150 Partition .387 4173 3547 3005 2536 2128 1773
165 SP .387 4210 3573 3021 2542 2126 1765
165 Barnes TSX .398 4064 3434 2891 2420 2012 1660
165 BST .475 4111 3596 3138 2730 2367 2042
180 Spitzer .331 3967 3259 2659 2150 1720 1361
180 SP .425 4195 3607 3091 2637 2237 1886
180 Barnes TSX .453 4197 3642 3151 2715 2319 1987
180 BST .507 4223 3721 3271 2867 2504 2178
180 Accubond .507 4223 3721 3271 2868 2505 2179
180 Partition .474 4195 3665 3193 2772 2396 2062
200 Partition .481 4158 3631 3161 2741 2366 2032
150 SP .338 4173 3462 2862 2351 1916 1547
130 Barnes TTSX .350 3847 3209 2670 2210 1817 1481
.270 Wby.
Bullet B/C Energy (Foot-Pounds)
Wt. Grains Bullet Type Muzzle 100 Yds 200 Yds 300 Yds 400 Yds 500 Yds
130 Spitzer .359 3106 2599 2163 1789 1468 1193
130 Barnes TSX .466 3338 2912 2536 2201 1903 1638
130 Partition .416 3288 2822 2415 2058 1744 1470
140 Accubond .496 3427 3014 2644 2313 2016 1751
140 BST .456 3385 2943 2551 2204 1896 1622
150 SP .462 3507 3053 2650 2292 1973 1690
150 Partition .465 3507 3055 2655 2298 1981 1699
110 Barnes TTSX .377 3062 2586 2178 1825 1521 1258

Velocity Comparison

.300 Wby.
Bullet B/C Velocity (Feet per Second)
Wt. Grains Bullet Type Muzzle 100 Yds 200 Yds 300 Yds 400 Yds 500 Yds
150 Partition .387 3540 3263 3004 2759 2528 2307
165 SP .387 3390 3123 2872 2634 2409 2195
165 Barnes TSX .398 3330 3061 2809 2570 2343 2128
165 BST .475 3350 3133 2927 2730 2542 2361
180 Spitzer .331 3150 2855 2579 2319 2074 1845
180 SP .425 3240 3004 2781 2569 2366 2173
180 Barnes TSX .453 3240 3018 2807 2606 2414 2230
180 BST .507 3250 3051 2806 2676 2503 2334
180 Accubond .507 3250 3051 2861 2678 2503 2335
180 Partition .474 3240 3028 2826 2634 2449 2271
200 Partition .481 3060 2860 2668 2485 2308 2139
150 SP .338 3540 3225 2932 2657 2399 2155
130 Barnes TTSX .350 3650 3334 3041 2766 2508 2265
.270 Wby.
Bullet B/C Velocity (Feet per Second)
Wt. Grains Bullet Type Muzzle 100 Yds 200 Yds 300 Yds 400 Yds 500 Yds
130 Spitzer .359 3280 3000 2737 2489 2254 2032
130 Barnes TSX .466 3400 3176 2963 2761 2567 2382
130 Partition .416 3375 3127 2892 2670 2458 2256
140 Accubond .496 3320 3113 2916 2727 2547 2373
140 BST .456 3300 3077 2865 2663 2470 2285
150 SP .462 3245 3028 2821 2623 2434 2253
150 Partition .465 3245 3029 2823 2627 2439 2259
110 Barnes TTSX .377 3540 3253 2985 2733 2495 2269

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