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

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

7mm 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
120 Barnes TTSX .373 2.67 3.43 0.00 -8.46 -22.97
139 SP .392 2.90 3.60 0.00 -8.70 -23.70
140 Barnes TSX .477 3.00 3.60 0.00 -8.60 -23.00
150 BST .493 2.80 3.50 0.00 -8.20 -21.80
154 SP .433 3.00 3.70 0.00 -8.80 -23.80
160 Accubond .531 3.40 4.10 0.00 -8.60 -25.30
160 Partition .475 3.10 3.80 0.00 -8.90 -23.80
175 SP .462 3.50 4.20 0.00 -9.90 -26.50
.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

Energy Comparison

7mm Wby.
Bullet B/C Energy (Foot-Pounds)
Wt. Grains Bullet Type Muzzle 100 Yds 200 Yds 300 Yds 400 Yds 500 Yds
120 Barnes TTSX .373 3136 2641 2216 1850 1534 1262
139 SP .392 3443 2926 2478 2088 1748 1453
140 Barnes TSX .477 3284 2871 2503 2175 1882 1621
150 BST .493 3627 3187 2793 2442 2127 1844
154 SP .433 3634 3134 2694 2307 1964 1663
160 Accubond .531 3306 2923 2578 2267 1986 1733
160 Partition .475 3638 3177 2767 2401 2075 1784
175 SP .462 3662 3181 2753 2373 2034 1735
.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

Velocity Comparison

7mm Wby.
Bullet B/C Velocity (Feet per Second)
Wt. Grains Bullet Type Muzzle 100 Yds 200 Yds 300 Yds 400 Yds 500 Yds
120 Barnes TTSX .373 3430 3148 2884 2635 2399 2176
139 SP .392 3340 3079 2834 2601 2380 2170
140 Barnes TSX .477 3250 3039 2837 2645 2460 2283
150 BST .493 3300 3093 2896 2708 2527 2353
154 SP .433 3260 3028 2807 2597 2397 2206
160 Accubond .531 3050 2868 2694 2596 2364 2206
160 Partition .475 3200 2991 2791 2600 2417 2241
175 SP .462 3070 2861 2662 2471 2288 2113
.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

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