.300 RUM HSM Ammo for Sale

Price History
.300 RUM
HSM
HSM 300RUM11N Game King 300 RUM 150 gr Spitzer Boat Tail (SBT) 20 Bx/ 20 Cs
150 Grains 20 Rounds Brass New
UPC 810742023140
$2.95/rd $59.05 Gman Sporting Arms
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140 Shipping $20
$3.29/rd $65.71 Down Range Firearms ★★★★★ (8)
Low cost shipping boost

.300 RUM HSM Ammo Price Graph

Today's .300 RUM HSM Ammo average is $3.48/rd, in line with the 180-day average of $3.49/rd. Over the last 180 days, the average peaked at $3.56/rd on March 14, 2026 and bottomed at $3.46/rd on August 25, 2026.

HSM 300RUM12N Game King 300 RUM 165 gr Spitzer Boat Tail (SBT) 20 Bx/ 20 Cs
165 Grains 20 Rounds Brass New
UPC 810742023157
$3.13/rd $62.54 Gman Sporting Arms
HSM 300RUM13N Game King 300 RUM 180 gr Spitzer Boat Tail (SBT) 20 Bx/ 20 Cs
180 Grains 20 Rounds Brass New
UPC 810742023164
$3.15/rd $62.91 Gman Sporting Arms
HSM 300 RUM 150GR Game King Ammunition – 20 Rounds - 80 Rounds
150 Grains 80 Rounds Brass New
UPC 810742023140 $5 Off - Use Code CALIBERKING
$3.20/rd $256.18 Gun Place ★★★★★ (206)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140 Free Shipping > $900 CC Fee 3%
$3.24/rd $64.76 Armed in Michigan ★★★★★ (714)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140 CC Fee 6% Limit 5
$3.25/rd $64.95 All Things Firearm ★★★★★ (3)
HSM 300RUM14N Game King 300 RUM 200 gr Spitzer Boat Tail (SBT) 20 Bx/ 20 Cs
200 Grains 20 Rounds Brass New
UPC 810742023171
$3.25/rd $65.00 Gman Sporting Arms
HSM 300 RUM 150GR Game King Ammunition – 20 Rounds
150 Grains 20 Rounds Brass New
UPC 810742023140 $5 Off - Use Code CALIBERKING
$3.25/rd $65.02 Gun Place ★★★★★ (206)
HSM 300 RUM 150 GRAINS GameKing - 20rd Box
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.31/rd $66.16 Georgia Guns & Ammo ★★★★★ (2)

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Products at their 90-day low price.

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HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140 Limit 5
$3.33/rd $66.68 MCM Tactical ★★★★★ (60)
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140 Shipping $20
$3.34/rd $66.81 Ash Arms ★★★★★ (1)
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140 CC Fee 3%
$3.35/rd $66.99 Cornerstone Arms ★★★★★ (373)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140 Limit 5
$3.36/rd $67.12 Redsand Tactical
HSM 300RUM11N Game King 300 RUM 150 gr Spitzer Boat Tail (SBT) 20 Bx/ 20 Cs
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.36/rd $67.23 Gun Wise
HSM Game King .300 RUM 165gr Sierra GameKing Spitzer Boat Tail – 20 Rounds - 400 Rounds
165 Grains 400 Rounds Brass New
UPC 810742023157 $5 Off - Use Code CALIBERKING
$3.37/rd $1,346.55 Gun Place ★★★★★ (206)
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.37/rd $67.35 Vital Defense ★★★★★ (14)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140 Shipping $20 Free Shipping > $1,000
$3.37/rd $67.41 Life2A ★★★★★ (3)
HSM 300 RUM 150gr Sierra GameKing Jacketed Soft Point - 20rd Box
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.37/rd $67.41 Pickett's Mill Armory ★★★★★ (26)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140 Limit 5
$3.38/rd $67.55 Top Shelf Munitions ★★★★★ (2)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140 Free Shipping > $1,250
$3.39/rd $67.74 Nadir Solutions ★★★★★ (18)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140 Limit 5
$3.39/rd $67.81 Patriotic Firearms
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140 Shipping $20
$3.40/rd $67.96 Custom Creatives Group ★★★★★ (24)
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140 Free Shipping > $500
$3.40/rd $67.99 Cummings Family Firearms ★★★★★ (52)
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140 Shipping $14 Free Shipping > $500 CC Fee 3%
$3.40/rd $68.07 Minutemen Defense ★★★★★ (54)
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140 Free Shipping > $500
$3.40/rd $68.07 Timber Hole Outdoors ★★★★★ (5)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.40/rd $68.07 Tungsten Creek Tactical
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140 Free Shipping > $1,000 Limit 5
$3.41/rd $68.10 Spargo Defense
HSM 300 RUM 150 Grain Jacketed Soft Point
150 Grains 20 Rounds Brass New
UPC 810742023140 Shipping $20
$3.42/rd $68.36 Cane Creek Munitions ★★★★★ (25)
HSM Game King .300 RUM 165gr Sierra GameKing Spitzer Boat Tail – 20 Rounds - 80 Rounds
165 Grains 80 Rounds Brass New
UPC 810742023157 $5 Off - Use Code CALIBERKING
$3.42/rd $273.48 Gun Place ★★★★★ (206)
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157 Free Shipping > $900 CC Fee 3%
$3.43/rd $68.59 Armed in Michigan ★★★★★ (714)
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140 Shipping $20
$3.44/rd $68.72 JB Armament ★★★★★ (126)
HSM Game King .300 RUM 180gr Spitzer Boat Tail – 20 Rounds - 80 Rounds
180 Grains 80 Rounds Brass New
UPC 810742023164 $5 Off - Use Code CALIBERKING
$3.44/rd $275.05 Gun Place ★★★★★ (206)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140 Shipping $18 Limit 5
$3.44/rd $68.85 Blackbox Ballistics ★★★★★ (2)
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140 Free Shipping > $1,000 CC Fee 3% Limit 5
$3.44/rd $68.85 Bunker Hill Ballistics ★★★★★ (9)
HSM Ammunition 300 RUM Ammo 150gr Sierra GameKing Spitzer BT Ammunition - 20 Rounds
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.45/rd $68.89 Vizards Guns and Ammo ★★★★★ (1,070)
HSM 300RUM13N Game King 300 RUM 180 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
180 Grains 20 Rounds Brass New
UPC 810742023164 Free Shipping > $900 CC Fee 3%
$3.45/rd $68.99 Armed in Michigan ★★★★★ (714)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.45/rd $68.99 Big Bee Bee ★★★★★ (11)
HSM 300RUM11N Game King 300 RUM 150 gr Spitzer Boat Tail (SBT) 20 Bx/ 20 Cs
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.46/rd $69.26 De Leon RX & Sporting Goods ★★★★★ (216)
HSM Game King .300 RUM 165gr Sierra GameKing Spitzer Boat Tail – 20 Rounds
165 Grains 20 Rounds Brass New
UPC 810742023157 $5 Off - Use Code CALIBERKING
$3.47/rd $69.41 Gun Place ★★★★★ (206)
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157 Shipping $20
$3.48/rd $69.61 Down Range Firearms ★★★★★ (8)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.48/rd $69.66 Bulletproof Outfitters ★★★★★ (133)
HSM Game King .300 RUM 180gr Spitzer Boat Tail – 20 Rounds
180 Grains 20 Rounds Brass New
UPC 810742023164 $5 Off - Use Code CALIBERKING
$3.49/rd $69.81 Gun Place ★★★★★ (206)
HSM BER300RUM185 Trophy Gold 300 RUM 185 gr Match Very Low Drag 20 Bx/ 20 Cs
185 Grains 20 Rounds Brass New
UPC 837306005343
$3.50/rd $69.94 Gman Sporting Arms
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140 Free Shipping > $500 Limit 5
$3.50/rd $69.96 Safe Haven Defense
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140 Free Shipping > $100 Limit 5
$3.50/rd $69.97 Caliber Exchange ★★★★★ (1)
HSM 300RUM11N Game King 300 RUM 150 gr Spitzer Boat Tail (SBT) 20 Bx/ 20 Cs
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.50/rd $69.99 Kind Sniper ★★★★★ (61)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140 Limit 5
$3.50/rd $69.99 Precision Gunworks
HSM 300RUM13N Game King 300 RUM 180 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
180 Grains 20 Rounds Brass New
UPC 810742023164 Shipping $20
$3.50/rd $70.01 Down Range Firearms ★★★★★ (8)
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157 Free Shipping > $1,000 CC Fee 3%
$3.50/rd $70.02 Bunker Hill Ballistics ★★★★★ (9)
HSM Game King .300 RUM 165 gr Sierra GameKing - 20 per Box
165 Grains 20 Rounds Brass New
UPC 810742023157
$3.50/rd $70.07 Georgia Guns & Ammo ★★★★★ (2)
HSM 300RUM13N Game King 300 RUM 180 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
180 Grains 20 Rounds Brass New
UPC 810742023164 Free Shipping > $1,000 CC Fee 3%
$3.52/rd $70.43 Bunker Hill Ballistics ★★★★★ (9)
HSM Game King 300 RUM 180 gr Sierra GameKing — 20/Box
180 Grains 20 Rounds Brass New
UPC 810742023164
$3.52/rd $70.48 Georgia Guns & Ammo ★★★★★ (2)
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140 Shipping $15
$3.53/rd $70.66 Extreme Products ★★★★★ (83)
HSM .300 RUM GameKing 150 gr JSP - 20rds
150 Grains 20 Rounds Brass New
UPC 810742023140 Shipping $13 Free Shipping > $500
$3.54/rd $70.69 Axolotl Arms ★★★★★ (126)
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157 Shipping $20
$3.54/rd $70.78 Ash Arms ★★★★★ (1)
HSM 300RUM14N Game King 300 RUM 200 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case - 400 Rounds
200 Grains 400 Rounds Brass New
UPC 810742023171 $5 Off - Use Code CALIBERKING
$3.54/rd $1,415.62 Gun Place ★★★★★ (206)
HSM 300 RUM Ammunition Gameking HSM300RUM-11-N 150 Grain Spitzer Boat Tail 20 Rounds
150 Grains 20 Rounds Brass New
UPC 810742023140 Free Shipping > $200
$3.55/rd $70.99 Outdoor Limited ★★★★★ (444)
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.55/rd $70.99 2 If By Sea Tactical ★★★★★ (135)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140 Limit 5
$3.55/rd $70.99 Pathfinder Militaria ★★★★★ (106)
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157 CC Fee 3%
$3.55/rd $70.99 Cornerstone Arms ★★★★★ (373)
HSM 300RUM13N Game King 300 RUM 180 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
180 Grains 20 Rounds Brass New
UPC 810742023164 CC Fee 3%
$3.55/rd $70.99 Cornerstone Arms ★★★★★ (373)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.55/rd $71.00 Loftus Firearms ★★★★★ (13)
HSM Ammo 300 RUM Ammo 150 Grain Sierra GameKing Spitzer Boat Tail Box of 20
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.56/rd $71.11 Drifters Gear ★★★★★ (25)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.56/rd $71.14 Ecommerce Arms
HSM 300RUM13N Game King 300 RUM 180 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
180 Grains 20 Rounds Brass New
UPC 810742023164 Shipping $20
$3.56/rd $71.19 Ash Arms ★★★★★ (1)
HSM 300RUM12N Game King 300 RUM 165 gr Spitzer Boat Tail (SBT) 20 Bx/ 20 Cs
165 Grains 20 Rounds Brass New
UPC 810742023157
$3.56/rd $71.21 Gun Wise
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157
$3.57/rd $71.34 Vital Defense ★★★★★ (14)
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157 Shipping $20 Free Shipping > $1,000
$3.57/rd $71.41 Life2A ★★★★★ (3)
HSM Game King 300 RUM 165 gr - 20 per Box
165 Grains 20 Rounds Brass New
UPC 810742023157
$3.57/rd $71.41 Pickett's Mill Armory ★★★★★ (26)
HSM BER300RUM168 Trophy Gold 300 RUM 168 gr Match Very Low Drag 20 Bx/ 20 Cs
168 Grains 20 Rounds Brass New
UPC 837306002571
$3.58/rd $71.58 Gman Sporting Arms
HSM 300RUM13N Game King 300 RUM 180 gr Spitzer Boat Tail (SBT) 20 Bx/ 20 Cs
180 Grains 20 Rounds Brass New
UPC 810742023164
$3.58/rd $71.62 Gun Wise
HSM 300RUM13N Game King 300 RUM 180 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
180 Grains 20 Rounds Brass New
UPC 810742023164
$3.59/rd $71.76 Vital Defense ★★★★★ (14)
HSM 300RUM13N Game King 300 RUM 180 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
180 Grains 20 Rounds Brass New
UPC 810742023164 Shipping $20 Free Shipping > $1,000
$3.59/rd $71.82 Life2A ★★★★★ (3)
HSM 300 RUM 180 gr GameKing - 20/Box
180 Grains 20 Rounds Brass New
UPC 810742023164
$3.59/rd $71.82 Pickett's Mill Armory ★★★★★ (26)
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.59/rd $71.84 Allied Arms ★★★★★ (310)
HSM 300RUM14N Game King 300 RUM 200 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case - 80 Rounds
200 Grains 80 Rounds Brass New
UPC 810742023171 $5 Off - Use Code CALIBERKING
$3.59/rd $287.50 Gun Place ★★★★★ (206)
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box
150 Grains 20 Rounds Brass New
UPC 810742023140 Shipping $11
$3.60/rd $71.99 Selway Armory ★★★★★ (186)
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157 Shipping $20
$3.60/rd $71.99 Custom Creatives Group ★★★★★ (24)
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157 Free Shipping > $500
$3.60/rd $71.99 Cummings Family Firearms ★★★★★ (52)
HSM 300RUM13N Game King 300 RUM 180 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
180 Grains 20 Rounds Brass New
UPC 810742023164 Free Shipping > $500
$3.60/rd $71.99 Cummings Family Firearms ★★★★★ (52)
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.60/rd $72.00 The Gun Pantry ★★★★★ (192)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.60/rd $72.00 Echo 6 Weapons ★★★★★ (97)
HSM 300RUM11N Game King 300 RUM 150 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.60/rd $72.00 CLB Guns ★★★★★ (45)
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157 Shipping $14 Free Shipping > $500 CC Fee 3%
$3.61/rd $72.10 Minutemen Defense ★★★★★ (54)
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157 Free Shipping > $500
$3.61/rd $72.10 Timber Hole Outdoors ★★★★★ (5)
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157
$3.61/rd $72.10 Tungsten Creek Tactical
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157 Shipping $20
$3.62/rd $72.40 Cane Creek Munitions ★★★★★ (25)
HSM 300RUM13N Game King 300 RUM 180 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
180 Grains 20 Rounds Brass New
UPC 810742023164 Shipping $20
$3.62/rd $72.41 Custom Creatives Group ★★★★★ (24)
HSM 300RUM14N Game King 300 RUM 200 gr Spitzer Boat Tail (SBT) 20 Bx/ 20 Cs
200 Grains 20 Rounds Brass New
UPC 810742023171
$3.63/rd $72.51 Gun Wise
HSM 300RUM13N Game King 300 RUM 180 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
180 Grains 20 Rounds Brass New
UPC 810742023164 Shipping $14 Free Shipping > $500 CC Fee 3%
$3.63/rd $72.52 Minutemen Defense ★★★★★ (54)
HSM 300RUM13N Game King 300 RUM 180 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
180 Grains 20 Rounds Brass New
UPC 810742023164 Free Shipping > $500
$3.63/rd $72.52 Timber Hole Outdoors ★★★★★ (5)
HSM 300RUM13N Game King 300 RUM 180 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
180 Grains 20 Rounds Brass New
UPC 810742023164
$3.63/rd $72.52 Tungsten Creek Tactical
HSM 300 RUM 150GR Game King - 20rd Box
150 Grains 20 Rounds Brass New
UPC 810742023140 Shipping $13 Free Shipping > $350
$3.63/rd $72.65 Shadowsmith Ammo ★★★★★ (23)
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157 Shipping $20
$3.64/rd $72.80 JB Armament ★★★★★ (126)
HSM Game King .300 RUM 180 Grain Sierra GameKing SPBT
180 Grains 20 Rounds Brass New
UPC 810742023164 Shipping $20
$3.64/rd $72.82 Cane Creek Munitions ★★★★★ (25)
HSM 300RUM14N Game King 300 RUM 200 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case - 20 Rounds
200 Grains 20 Rounds Brass New
UPC 810742023171 $5 Off - Use Code CALIBERKING
$3.65/rd $72.97 Gun Place ★★★★★ (206)
HSM Ammunition .300 RUM Ammo 165gr SGSBT Ammunition - 20 Rounds
165 Grains 20 Rounds Brass New
UPC 810742023157
$3.65/rd $72.97 Vizards Guns and Ammo ★★★★★ (1,070)
HSM 300 RUM 150GR GAME KING - 20RD 20BX/CS
150 Grains 20 Rounds Brass New
UPC 810742023140
$3.65/rd $72.99 WTW Arms ★★★★★ (68)
HSM 300RUM12N Game King 300 RUM 165 gr Sierra GameKing Spitzer Boat Tail 20 Per Box/ 20 Case
165 Grains 20 Rounds Brass New
UPC 810742023157
$3.65/rd $72.99 Big Bee Bee ★★★★★ (11)

.300 RUM HSM Ammo Price Graph

Today's .300 RUM HSM Ammo average is $3.48/rd, in line with the 180-day average of $3.49/rd. Over the last 180 days, the average peaked at $3.56/rd on March 14, 2026 and bottomed at $3.46/rd on August 25, 2026.

Daily Deals Email

Products at their 90-day low price.

Unsubscribe anytime with one click.

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