Buy .300 REM ULTRA MAG Ammo for Sale
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Remington Premier Scirocco Bonded .300 RUM 180 Grain Swift Scirocco Bonded Centerfire Rifle Ammo, 20 Rounds, 27936
Brand:
Remington
Action:
Semi-Auto
Barrel Length:
22"
Bullet Type:
Swift Scirocco Bonded
Caliber:
.300 REM ULTRA MAG
Capacity:
4+1
From:
$68.27
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17
(0)
Nosler Trophy Grade 300 RUM 165 grain Partition Rifle Ammo, 20/Box - 60064
Brand:
Nosler
Bullet Type:
Partition
Caliber:
.300 REM ULTRA MAG
Grains:
165 grain
Rounds:
20
From:
$82.67
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16
(0)
Hornady Outfitter .300 Remington Ultra Magnum 180 Grain Copper Solid CX Brass Cased Centerfire Rifle Ammunition, 20 Rounds, 82084
Brand:
Hornady
Bullet Type:
CX
Caliber:
.300 REM ULTRA MAG
Capacity:
20
Finish Per Color:
Brass
Grains:
180 grain
From:
$71.99
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14
(2)
Barnes Bullets VOR-TX LR 190 gr LRX Boat Tail .300 RUM Ammo, 20/box - 29011
Brand:
Barnes
Bullet Type:
LRX BOAT TAIL
Caliber:
.300 REM ULTRA MAG
Grains:
190 grain
Rounds:
20
From:
$67.89
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14
(0)
Hornady Precision Hunter 300 Rem Ultra Mag 220 gr ELD-X 20 Rounds Ammunition - 8209
Brand:
Hornady
Bullet Type:
ELD X
Caliber:
.300 REM ULTRA MAG
Grains:
220 grain
Rounds:
20
From:
$71.49
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14
(1)
Nosler Trophy Grade 300 RUM 180 grain AccuBond Rifle Ammo, 20/Box - 60065
Brand:
Nosler
Bullet Type:
AccuBond
Caliber:
.300 REM ULTRA MAG
Grains:
180 grain
Rounds:
20
From:
$29.99
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14
(0)
NOS AMMO 300RUM 180GR PARTITION 20rd BOX
Brand:
Nosler
Caliber:
.300 REM ULTRA MAG
Finish Per Color:
Brass
Rounds:
20
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HSM Ammunition Trophy Gold 168 gr Match Hunting Very Low Drag .300 RUM Ammo, 20/box - BER-300RUM168VLD
Brand:
HSM Ammunition
Bullet Type:
Berger Hunting VLD Match
Caliber:
.300 REM ULTRA MAG
Grains:
168 grain
Rounds:
20
(0)
300 RUM 180gr E-Tip (20 ct.) Ammunition Lead Expansion Tip
Brand:
Nosler
Caliber:
.300 REM ULTRA MAG
Rounds:
20
(1)
Remington Core-Lokt 180 gr PSP .300 RUM Rifle Ammo, 20/box - 27641
Brand:
Remington
Bullet Type:
Full Metal Jacket
Caliber:
.300 REM ULTRA MAG
Capacity:
20
Grains:
180 grain
Rounds:
20
(0)
HSM Ammunition Trophy Gold 185 gr Match Hunting Very Low Drag .300 RUM Ammo, 20/box - BER-300RUM185VLD
Brand:
HSM Ammunition
Bullet Type:
Match Hunting Very Low Drag
Caliber:
.300 REM ULTRA MAG
Capacity:
25
Grains:
185 grain
Rounds:
20
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HSM Ammunition Game King 165 gr Spitzer Boat Tail .300 RUM Ammo, 20/box - HSM-300RUM-12-N
Brand:
HSM Ammunition
Bullet Type:
Sierra GameKing Spitzer Boat-Tail
Caliber:
.300 REM ULTRA MAG
Grains:
180 grain
Rounds:
20
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HSM Ammunition Game King 150 gr Spitzer Boat Tail .300 RUM Ammo, 20/box - HSM-300RUM-11-N
Brand:
HSM Ammunition
Bullet Type:
Sierra GameKing Spitzer Boat-Tail
Caliber:
.300 REM ULTRA MAG
Finish Per Color:
Brass
Grains:
165 grain
Rounds:
20
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Remington Premier Long Range 300 Remington Ultra Magnum Speer Impact 190gr Rifle Ammo - 20 Rounds
Brand:
Remington
Bullet Type:
Speer Impact
Caliber:
.300 REM ULTRA MAG
Grains:
190 grain
Rounds:
20
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Remington Premier Scirocco Bonded .300 RUM 150 Grain Swift Scirocco Bonded Centerfire Rifle Ammo, 20 Rounds, 27950
Brand:
Remington
Barrel Length:
22"
Bullet Type:
Swift Scirocco Bonded
Caliber:
.300 REM ULTRA MAG
Capacity:
5+1
Grains:
150 grain
(0)
Nosler Trophy Grade .300 Remington Ultra Mag 180 Grain Centerfire Rifle Ammo
Brand:
Nosler
Caliber:
.300 REM ULTRA MAG
Rounds:
20
(0)
HSM Ammunition Trophy Gold 210 gr Match Hunting Very Low Drag .300 RUM Ammo, 20/box - BER-300RUM210VLD
Brand:
HSM Ammunition
Bullet Type:
Match Hunting Very Low Drag
Caliber:
.300 REM ULTRA MAG
Grains:
210 grain
Rounds:
20
(0)
Hornady Precision .300 Rem Ultra Mag 220 Grain Hunter Rifle Ammo
Brand:
Hornady
Caliber:
.300 REM ULTRA MAG
Rounds:
20
(0)
Hornady Outfitter .300 Remington Ultra Magnum 180 Grain CX Centerfire Rifle Ammo
Brand:
Hornady
Caliber:
.300 REM ULTRA MAG
Rounds:
20
(0)
Norma Ammunition American PH 180 gr Oryx .300 RUM Ammo, 20/box - 20174782
Brand:
Norma
Bullet Type:
Oryx
Caliber:
.300 REM ULTRA MAG
Capacity:
20
Finish Per Color:
Brass
Grains:
180 grain
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Hornady Outfitter 180 gr GMX .300 RUM Lead-Free Ammo, 20/box - 8208
Brand:
Hornady
Bullet Type:
GMX - Copper Alloy Expanding
Caliber:
.300 REM ULTRA MAG
Grains:
180 grain
Rounds:
20
(0)
Hornady 300 RCM 150gr SST Superformanceu00ae Ammunition, 20 Round Box u2012 82231
Brand:
Hornady
Caliber:
.300 REM ULTRA MAG
Rounds:
20
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Federal Premium 180 gr Trophy Bonded Tip .300 RUM Ammo, 20/box - P300RUMTT1
Brand:
Federal
Bullet Type:
Trophy Bonded Tip
Caliber:
.300 REM ULTRA MAG
Grains:
180 grain
Rounds:
20
(0)
Remington HTP Copper 180 gr Barnes TSX Boat Tail .300 RUM Ammo, 20/box - HTP300UM
Brand:
Remington
Bullet Type:
Barnes Triple Shock X Boat Tail
Caliber:
.300 REM ULTRA MAG
Grains:
180 grain
Rounds:
20
Marketplace Insights
★ 4.6/5
based on 5 customer reviews across 29 variants from 26 retailers
Highly rated ammo praised for exceptional accuracy and hunting effectiveness, with one user noting fragmentation concerns at closer distances.
What customers like
Excellent accuracy80%
Excellent accuracy; 1 3/8" group at 300 yards.
Hunting performance80%
Not one animal took another step! I love them!!!
Value for price40%
Great ammo especially at this price.
Consistent velocity40%
shot consistently in velocity and accuracy.
Common concerns
Fragmentation at close range20%
Fragments at closer ranges.
Frequently Asked Questions
Buy .300 REM ULTRA MAG Ammo for Sale
Does Remington still make the 300 Ultra Mag?
Remington still offers the 300 Ultra Mag as a rifle chambering, with the Model 700 LH available new in that caliber. Around 29 ammunition variants are available from 26 retailers, typically priced near $83, ranging from $40–$110. Core-Lokt and Premier Long Range loads remain common options.
What is the effective range of a 300 rem ultra mag?
For hunting medium to large game, 300–400 yards is typical for most shooters. Skilled long-range shooters can push 1,000+ yards with proper optics and ammunition. The cartridge's flat trajectory and high velocity support extended range work, but recoil and shooter ability are limiting factors.
How hard does a 300 ultra mag kick?
A 9-pound rifle chambered in .300 Ultra Mag generates roughly 41 foot-pounds of recoil energy—noticeably more than a .300 Win Mag. A muzzle brake can cut that nearly in half. Heavier rifles and proper stock fit also reduce felt recoil substantially.
Is 300 Ultra Mag the same as 300 Win Mag?
No, they're different cartridges. The .300 Remington Ultra Magnum (RUM) has a larger case and higher velocity than the .300 Winchester Magnum, generating more power and recoil. Both fire .308-diameter bullets but are not interchangeable.
What are the pros and cons of a .300 ultra mag?
Pros: High velocity, flat trajectory, and effective with heavy bullets for long-range hunting. Cons: Heavy recoil, shorter barrel life, and expensive ammunition. Factory loadings remain available. Current listings show roughly 29 variants at a median price around $83.
How much is a 300 ultra mag bullet?
.300 Remington Ultra Magnum ammunition typically costs around $83 per box, with prices ranging from $75–$125 depending on grain weight, bullet type, and retailer. Most options fall between $85–$125 per box.
How far can a 300 ultra mag shoot?
A .300 RUM can effectively engage targets beyond 1,000 yards. It pushes heavy bullets around 3,200 fps, maintaining a flat trajectory and strong downrange energy. Practical range depends on shooter skill, optics, and conditions, but it's well-suited for long-range hunting and shooting.