.378 Weatherby Mag Weatherby Ammo for Sale

Price History
.378 Weatherby Mag
Weatherby
Weatherby B378270TSX Select Plus 378 Wthby Mag 270 gr Barnes TSX Lead Free 20 Bx/ 10 Cs
270 Grains 20 Rounds Brass New
UPC 747115415854
$6.11/rd $122.24 Gman Sporting Arms
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $20 Limit 1
$6.58/rd $131.65 Ash Arms ★★★★★ (1)
Low cost shipping boost

.378 Weatherby Mag Weatherby Ammo Price Graph

Today's .378 Weatherby Mag Weatherby Ammo average is $7.39/rd, 2% above the 180-day average of $7.25/rd. Over the last 180 days, the average peaked at $7.40/rd on April 27, 2026 and bottomed at $6.77/rd on March 14, 2026.

WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 CC Fee 6% Limit 1
$6.45/rd $128.95 All Things Firearm ★★★★★ (3)
Weatherby 378 WBY Magnum 270gr TSX Rifle Ammo - 20 Rounds 747115415854
270 Grains 20 Rounds Brass New
UPC 747115415854 $5 Off - Use Code CALIBERKING
$6.46/rd $129.09 Gun Place ★★★★★ (206)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$6.62/rd $132.38 MCM Tactical ★★★★★ (60)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$6.63/rd $132.60 Redsand Tactical
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $20 Free Shipping > $1,000 Limit 1
$6.64/rd $132.82 Life2A ★★★★★ (3)
WBY AMMO 378WBY 270GR BARNES TSX 20/10
270 Grains 20 Rounds Brass New
UPC 747115415854 Free Shipping > $500 Limit 1
$6.65/rd $132.99 Cummings Family Firearms ★★★★★ (52)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$6.69/rd $133.85 Patriotic Firearms
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $20 Limit 1
$6.70/rd $133.90 Custom Creatives Group ★★★★★ (24)

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WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Free Shipping > $900 CC Fee 3%
$6.70/rd $134.07 Armed in Michigan ★★★★★ (714)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$6.71/rd $134.11 Top Shelf Munitions ★★★★★ (2)
Weatherby .378 Weatherby Magnum 270gr Barnes TSX — 20rd Box
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$6.72/rd $134.37 Georgia Guns & Ammo ★★★★★ (2)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Free Shipping > $1,250
$6.73/rd $134.49 Nadir Solutions ★★★★★ (18)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Free Shipping > $1,000 Limit 1
$6.76/rd $135.21 Spargo Defense
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$6.77/rd $135.40 Vital Defense ★★★★★ (14)
Weatherby B378270TSX Select Plus 378 Wthby Mag 270 gr Barnes TSX Lead Free 20 Bx/ 10 Cs
270 Grains 20 Rounds Brass New
UPC 747115415854
$6.78/rd $135.68 Gun Wise
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Free Shipping Limit 1
$6.80/rd $135.90 Caliber Exchange ★★★★★ (1)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$6.80/rd $135.99 Big Bee Bee ★★★★★ (11)
WBY AMMO 378WBY 270GR BARNES TSX 20/10
270 Grains 20 Rounds Brass New
UPC 747115415854 Free Shipping > $1,000 CC Fee 3% Limit 1
$6.84/rd $136.69 Bunker Hill Ballistics ★★★★★ (9)
WBY AMMO 378WBY 270GR BARNES TSX 20/10
270 Grains 20 Rounds Brass New
UPC 747115415854 Free Shipping > $500
$6.84/rd $136.70 Timber Hole Outdoors ★★★★★ (5)
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$6.85/rd $137.00 Bulletproof Outfitters ★★★★★ (133)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$6.90/rd $137.99 Precision Gunworks
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Free Shipping > $500 Limit 1
$6.91/rd $138.18 Safe Haven Defense
Weatherby B378270TSX Select Plus 378 Wthby Mag 270 gr Barnes TSX Lead Free 20 Bx/ 10 Cs
270 Grains 20 Rounds Brass New
UPC 747115415854
$6.95/rd $138.99 Kind Sniper ★★★★★ (61)
Weatherby B378270TSX Select Plus 378 Wthby Mag 270 gr Barnes TSX Lead Free 20 Per Box/ 10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$6.95/rd $139.00 Loftus Firearms ★★★★★ (13)
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$6.95/rd $139.00 Darmok Firearms ★★★★★ (37)
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $13 Free Shipping > $500 Limit 1
$6.96/rd $139.27 Axolotl Arms ★★★★★ (126)
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$6.98/rd $139.61 Ecommerce Arms
Weatherby .378 Magnum Ammo 270gr TSX Ammunition - 20 Rounds
270 Grains 20 Rounds Brass New
UPC 747115415854
$7.00/rd $139.91 Vizards Guns and Ammo ★★★★★ (1,070)
Weatherby Select Plus .378 Weatherby 270 grain TSX Lead Free (20 rd box)
270 Grains 20 Rounds New
Free Shipping > $500
$7.00/rd $139.99 Rivertown Munitions ★★★★★ (130)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$7.00/rd $139.99 Pathfinder Militaria ★★★★★ (106)
Weatherby B378270TSX Select Plus 378 Wthby Mag 270 gr Barnes TSX Lead Free 20 Bx/ 10 Cs
270 Grains 20 Rounds Brass New
UPC 747115415854
$7.03/rd $140.67 De Leon RX & Sporting Goods ★★★★★ (216)
WBY AMMO 378WBY 270GR BARNES TSX 20/10
270 Grains 20 Rounds Brass New
UPC 747115415854
$7.05/rd $140.99 2 If By Sea Tactical ★★★★★ (135)
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854
$7.20/rd $144.00 The Gun Pantry ★★★★★ (192)
Weatherby 378 Weatherby Magnum Ammo 270 Grain TSX Box of 20
270 Grains 20 Rounds Brass New
UPC 747115415854
$7.22/rd $144.42 Drifters Gear ★★★★★ (25)
WBY AMMO 378WBY 270GR BARNES TSX 20/10
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$7.22/rd $144.42 Allied Arms ★★★★★ (310)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$7.23/rd $144.62 Bayou Brass ★★★★★ (21)
Weatherby Select Plus .378 Weatherby Magnum Ammo 270gr Swift A-Frame 20 Rounds
270 Grains 20 Rounds Brass New
UPC 747115452682
$7.25/rd $144.99 GunMag Warehouse ★★★★★ (71)
Weatherby Select Plus .378 Weatherby Magnum Ammo 300gr Hornady DGS 20 Rounds
300 Grains 20 Rounds Brass New
UPC 747115450121
$7.25/rd $144.99 GunMag Warehouse ★★★★★ (71)
Weatherby Select Plus .378 Weatherby Magnum Ammo 300gr Hornady DGXB 20 Rounds
300 Grains 20 Rounds Brass New
UPC 747115450114
$7.25/rd $144.99 GunMag Warehouse ★★★★★ (71)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854
$7.25/rd $144.99 WTW Arms ★★★★★ (68)
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854
$7.25/rd $145.00 Echo 6 Weapons ★★★★★ (97)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$7.25/rd $145.02 The Arsenal Project ★★★★★ (16)
Weatherby 378WBY 270gr Barnes TSX - 20rd Box
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $13 Free Shipping > $350
$7.30/rd $145.90 Shadowsmith Ammo ★★★★★ (23)
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$7.39/rd $147.83 Black Bayou Armory ★★★★★ (83)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $10 Free Shipping > $299 Limit 1
$7.40/rd $147.99 Canoe Creek Armory ★★★★★ (17)
WEATHERBY 378 WBY MAGNUM
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $16 Limit 1
$7.40/rd $147.99 Riflenetics ★★★★★ (65)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$7.45/rd $148.99 Mad Wolf Armory ★★★★★ (3)
Weatherby B378270TSX 378 Weatherby Magnum Barnes TSX Lead Free 270 Grain 20 Rounds
270 Grains 20 Rounds Brass New
UPC 747115415854
$7.54/rd $150.82 Shooting Surplus ★★★★★ (193)
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $18 Limit 1
$7.61/rd $152.16 Sharp's Shooting Supply ★★★★★ (34)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $19 Free Shipping > $750 Limit 1
$7.61/rd $152.16 Riddle Firearms
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854
$7.70/rd $154.00 Highland Arms ★★★★★ (49)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $15 Free Shipping > $500 Limit 1
$7.74/rd $154.74 Kinetic Armory ★★★★★ (3)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $25 Limit 1 $25 Off Orders Over $200 Code LOCKNLOAD25
$7.74/rd $154.82 Scottsodg.com
Weatherby Barnes TSX B378270TSX
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $15 Free Shipping > $500 Limit 1
$7.75/rd $154.99 BuyAGun ★★★★★ (3)
Weatherby 378 Wby Magnum 270 Grain Barnes TSX Ammunition 20 Rounds
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $16 Limit 1
$7.80/rd $156.03 Caliber Depot ★★★★★ (6)
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $15 Free Shipping > $500
$7.85/rd $157.00 Garrison's Guns ★★★★★ (21)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$7.95/rd $158.99 Get Guns N Ammo
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$8.05/rd $161.00 Birmingham Hill Armory ★★★★★ (16)
270GR TSX 20RD 10BX/CSWEATHERBY AMMO 378 WBY MAGNUM
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $17.50 Free Shipping > $250 Limit 2
$8.10/rd $161.95 Ammunitions for Sale
Weatherby B378270TSX 378 Weatherby Magnum 270 GR Barnes TSX - 20rd Box
270 Grains 20 Rounds Brass New
UPC 747115415854 Shipping $12
$8.15/rd $163.05 Classic Firearms ★★★★★ (2,454)
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854 Free Shipping > $700 Limit 1
$8.16/rd $163.20 Freedom Firearms ★★★★★ (2)
Weatherby Select Plus 747115415854 378 Weatherby Mag 270 Grains Lead Free
270 Grains 20 Rounds Brass New
UPC 747115415854
$8.20/rd $163.99 C-ME Firearms
20rds - 378 Weatherby Mag 270 gr. Triple Shock
270 Grains 20 Rounds Brass New
UPC 747115415854
$8.25/rd $164.95 Ammunition To Go ★★★★★ (27)
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854 Free Shipping Limit 1
$8.36/rd $167.12 Lightning Strike Arms ★★★★★ (32)
Wby Ammo 378WBY 270GR Barnes Tsx 20/10
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$8.36/rd $167.19 Shiner Tactical ★★★★★ (6)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$8.38/rd $167.63 Firearms Express
WEATHERBY 378 WBY MAGNUM
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$8.40/rd $167.99 Apocalypse Outfitters ★★★★★ (4)
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854
$8.41/rd $168.24 Don's Weaponry ★★★★★ (252)
Weatherby Select Plus 378 Weatherby Magnum Ammo 270 Grain Swift A-Frame Jacketed Soft Point Box of 20
270 Grains 20 Rounds Brass New
UPC 747115452682 Free Shipping
$8.45/rd $168.99 Midway USA ★★★★★ (119)
Weatherby Select Plus 378 Weatherby Magnum Ammo 300 Grain Hornady DGS (Dangerous Game Solid) Bonded Flat Nose Box of 20
300 Grains 20 Rounds Brass New
UPC 747115450121 Free Shipping
$8.45/rd $168.99 Midway USA ★★★★★ (119)
Weatherby Select Plus .378 Weatherby Magnum Ammo 270gr Barnes TSX 20 Rounds
270 Grains 20 Rounds Brass New
UPC 747115415854
$8.50/rd $169.99 GunMag Warehouse ★★★★★ (71)
WBY AMMO 378WBY 270GR BARNES TSX 20/10
270 Grains 20 Rounds Brass New
UPC 747115415854 Free Shipping > $500 Limit 1
$8.70/rd $173.99 Timberlake Firearms ★★★★★ (11)
Weatherby B378270TSX Select Plus 378WthbyMag 270gr Barnes TSX Lead Free 20 Per Box/10 Case
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$9.00/rd $180.00 EK Tactical ★★★★★ (10)
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Limit 1
$9.05/rd $180.99 Coastal Firearms
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854
$9.20/rd $184.00 Third Shift
WEATHERBY AMMO 378 WBY MAGNUM - 270GR TSX 20RD 10BX/CS
270 Grains 20 Rounds Brass New
UPC 747115415854 Free Shipping Limit 1
$10.02/rd $200.46 Conkey's Outdoors ★★★★★ (175)

.378 Weatherby Mag Weatherby Ammo Price Graph

Today's .378 Weatherby Mag Weatherby Ammo average is $7.39/rd, 2% above the 180-day average of $7.25/rd. Over the last 180 days, the average peaked at $7.40/rd on April 27, 2026 and bottomed at $6.77/rd on March 14, 2026.

Daily Deals Email

Products at their 90-day low price.

Unsubscribe anytime with one click.

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