Guide

.300 Winchester Magnum Ammo 2026: Hunting and Range Loads From the Makers

By Cole Harlan, EditorUpdated Nov 4, 2026How we verifyEditorial standards

We checked 35 current 300 Win Mag loads on Federal's, Remington's and Hornady's own product pages on November 4, 2026: 18 from Federal, 7 from Remington and 10 from Hornady. The bullet weights, velocities, energy figures, test barrels and statuses below are copied from the maker pages. We don't use retailer prices or third-party ballistics. This is a comparison of popular loads from 3 makers, not every .300 Winchester Magnum load sold.

Grouping follows each maker's own usage label ("Big Game," "Long Range," "Target Shooting" and "Competition"). Hornady prints no usage label or stock status on our capture, so its loads sit in their own table. The Cartridge column shows the name the maker page uses.

Hunting loads

These are the loads Federal and Remington label Big Game on their own pages. Figures are copied from each maker page.

Load	Cartridge	Item #	Bullet	Muzzle velocity	Muzzle energy	Test barrel	Box	Maker status (Nov. 4)
Federal Barnes TSX	300 Win Mag	P300WP	180 gr Barnes Triple-Shock X Bullet (TSX)	2,960 fps	3,502 ft-lb	Not listed on maker page	20	Available
Federal Barnes TSX	300 Win Mag	P300WR	165 gr Barnes Triple-Shock X Bullet (TSX)	3,050 fps	3,408 ft-lb	Not listed on maker page	20	Available
Federal Berger Hybrid Hunter	300 Win Mag	P300WBCH1	185 gr Berger Hybrid	2,950 fps	3,575 ft-lb	Not listed on maker page	20	Available
Federal ELD-X	300 Win Mag	P300WELDX1	200 gr ELD-X	2,860 fps	3,632 ft-lb	Not listed on maker page	20	Discontinued
Federal Fusion Rifle	300 Win Mag	F300WFS3	180 gr Fusion Soft Point	2,960 fps	3,502 ft-lb	Not listed on maker page	20	Available
Federal Fusion Rifle	300 Win Mag	F300WFS2	165 gr Fusion Soft Point	3,080 fps	3,475 ft-lb	Not listed on maker page	20	Available
Federal Fusion Tipped Rifle	300 Win Mag	F300WTFS3	180 gr Fusion Tipped	2,950 fps	3,478 ft-lb	Not listed on maker page	20	Available
Federal Power-Shok Copper Rifle	300 Win Mag	300W180LFA	180 gr Copper HP	2,850 fps	3,246 ft-lb	Not listed on maker page	20	Available
Federal Power-Shok Rifle	300 Win Mag	300WBS	180 gr Jacketed Soft Point	2,960 fps	3,502 ft-lb	Not listed on maker page	20	Available
Federal Power-Shok Rifle	300 Win Mag	300WGS	150 gr Jacketed Soft Point	3,150 fps	3,305 ft-lb	Not listed on maker page	20	Available
Federal Swift Scirocco II	300 Win Mag	P300WSS1	180 gr Swift Scirocco	2,960 fps	3,502 ft-lb	Not listed on maker page	20	Discontinued
Federal Terminal Ascent	300 Win Mag	P300WTA1	200 gr Terminal Ascent	2,810 fps	3,506 ft-lb	Not listed on maker page	20	Currently Unavailable
Federal Terminal Ascent	300 Win Mag	P300WTA2	175 gr Terminal Ascent	3,030 fps	3,567 ft-lb	Not listed on maker page	20	Available
Federal Trophy Bonded Tip	300 Win Mag	P300WTT1	180 gr Trophy Bonded Tip	2,960 fps	3,502 ft-lb	Not listed on maker page	20	Available
Federal Trophy Bonded Tip	300 Win Mag	P300WTT2	165 gr Trophy Bonded Tip	3,050 fps	3,408 ft-lb	Not listed on maker page	20	Available
Federal Trophy Copper	300 Win Mag	P300WTC1	180 gr Trophy Copper	2,960 fps	3,502 ft-lb	Not listed on maker page	20	Available
Federal Trophy Copper	300 Win Mag	P300WTC2	165 gr Trophy Copper	3,050 fps	3,408 ft-lb	Not listed on maker page	20	Available
Remington Core-Lokt	300 Win Mag	29497	180 gr Pointed Soft Point Core Lokt	2,960 fps	3,502 ft-lb	Not listed on maker page	20	Available
Remington Core-Lokt	300 Win Mag	29495	150 gr Pointed Soft Point Core Lokt	3,290 fps	3,605 ft-lb	Not listed on maker page	20	Available
Remington Core-Lokt Copper	300 Win Mag	R27858	180 gr Copper HP	2,850 fps	3,246 ft-lb	Not listed on maker page	20	Available
Remington Core-Lokt Tipped	300 Win Mag	R29038	180 gr Core-Lokt Tipped	2,980 fps	3,549 ft-lb	Not listed on maker page	20	Available
Remington Premier CuT	300 Win Mag	R22345	180 gr Copper Tipped	2,960 fps	3,502 ft-lb	Not listed on maker page	20	Available
Remington Premier Long Range	300 Win Mag	R21346	190 gr Speer Impact	2,885 fps	3,511 ft-lb	Not listed on maker page	20	Available
Remington Premier Scirocco	300 Win Mag	R29330	180 gr Swift Scirocco Bonded	2,960 fps	3,502 ft-lb	Not listed on maker page	20	Available

Hornady loads

Hornady's pages show no usage label and no stock status on our capture, so these loads are listed by product line. Velocity and energy are the muzzle figures from each page's ballistics table.

Load	Cartridge	Item #	Bullet	Muzzle velocity	Muzzle energy	Test barrel	Box	Maker status (Nov. 4)
Hornady American Whitetail	300 Win Mag	82044	180 gr InterLock® SP American Whitetail®	2,960 fps	3,502 ft-lb	24 in	20	Not listed on maker page
Hornady American Whitetail	300 Win Mag	8204	150 gr InterLock® SP American Whitetail®	3,275 fps	3,572 ft-lb	24 in	20	Not listed on maker page
Hornady American Whitetail Tipped	300 Win Mag	82024	165 gr SST® American Whitetail® TIPPED	3,150 fps	3,635 ft-lb	24 in	20	Not listed on maker page
Hornady Match	300 Win Mag	82180	195 gr ELD® Match	2,930 fps	3,717 ft-lb	24 in	20	Not listed on maker page
Hornady Match	300 Win Mag	82043	178 gr ELD® Match	2,960 fps	3,463 ft-lb	24 in	20	Not listed on maker page
Hornady Outfitter	300 Win Mag	821974	180 gr. CX® Outfitter®	2,960 fps	3,502 ft-lb	24 in	20	Not listed on maker page
Hornady Precision Hunter	300 Win Mag	82002	200 gr ELD-X® Precision Hunter®	2,860 fps	3,632 ft-lb	24 in	20	Not listed on maker page
Hornady Precision Hunter	300 Win Mag	82041	178 gr ELD-X® Precision Hunter®	2,960 fps	3,463 ft-lb	26 in	20	Not listed on maker page
Hornady Superformance	300 Win Mag	82193	180 gr SST® Superformance®	3,130 fps	3,915 ft-lb	24 in	20	Not listed on maker page
Hornady Superformance	300 Win Mag	820264	165 gr. CX® Superformance®	3,260 fps	3,893 ft-lb	24 in	20	Not listed on maker page

Range and training loads

These are loads Federal labels Target Shooting or Competition. Several are the same load in different box counts, and each box size has its own item number.

Load	Cartridge	Item #	Bullet	Muzzle velocity	Muzzle energy	Test barrel	Box	Maker status (Nov. 4)
Federal Gold Medal Sierra MatchKing	300 Win Mag	GM300WM	190 gr Sierra Matchking Boat-Tail Hollow Point	2,900 fps	3,548 ft-lb	Not listed on maker page	20	Available

Barrel length matters: the test barrels

Muzzle velocity depends on barrel length, so compare loads tested on the same barrel. Of the 35 loads, 25 list no test barrel, 9 list 24 in, 1 list 26 in. The loads with no test barrel are from Federal and Remington. A rifle with a shorter barrel than the maker's test barrel will likely give lower velocities than the box. SAAMI's test barrel for rifle cartridges such as the .300 Winchester Magnum is 24 in. For how velocity changes with barrel length in .300 Winchester Magnum, see our barrel length vs velocity data for .300 Winchester Magnum.

300 Win Mag: what SAAMI lists

SAAMI lists the cartridge as "300 WINCHESTER MAGNUM [300 WIN MAG]" in ANSI/SAAMI Z299.4, its centerfire rifle standard (approved Feb. 10, 2025). The cartridge drawing was issued 04/21/1980 and revised 05/31/2022. SAAMI lists a maximum average pressure of 64,000 psi, measured by transducer (the table shows 640 in psi/100), and 54,000 CUP by crusher (the table shows 540 in CUP/100). Cartridge overall length runs from 3.215 in minimum to 3.340 in maximum. Case length is 2.620 in (−.020), and bullet diameter is .309 in (−.003). Bore is .300 in and groove is .308 in, with 6 grooves and a twist of 1 in 10.00 in, right-hand (marked optional). Read the standard at the SAAMI Z299.4 PDF.

SAAMI says all standard rifle test barrels are 24 in long and that exterior ballistic data for centerfire rifle cartridges is based on that length. Its listed exceptions (7.62x39, 277 Sig Fury, 30 Carbine, 300 AAC Blackout and 300 HAM'R) do not include the .300 Winchester Magnum.

Not yet verified

These makers and loads are not in the tables.

Winchester: not checked for this caliber this round. The Winchester product pages we opened for other calibers on Nov. 4 said "There is no ballistics data available at this time," so we have no Winchester figures to copy yet.
SIG Sauer: the maker's site returned an access error (403) to our automated check, and we did not verify its product pages this round.
Speer and CCI: neither maker's caliber menu we captured lists 300 Win Mag (Speer's and CCI's menus show handgun and rimfire calibers), so we found no 300 Win Mag load from either maker and neither is in the tables.
Hornady: item 820384 (300 Win Mag 165 gr ECX Hornady International) has no ballistics table on its page. Item 8206 (180 gr SP Custom International) lists its table in meters, m/sec and joules, which we did not convert. Both are left out.
Test barrels and stock status: Federal and Remington pages list no test barrel on some loads, and Hornady's pages list no stock status.

2 loads in the tables carry a "Discontinued" badge on the maker page as of Nov. 4, 2026: Federal ELD-X P300WELDX1, Federal Swift Scirocco II P300WSS1. We list them because the maker page still shows them.

Rifles for .300 Winchester Magnum

The .300 Winchester Magnum is a rifle cartridge, and the loads in the tables run from 150 gr to 200 gr. See also new rifle releases and the new hunting rifles of 2026.

Where to buy

We link only to maker pages, listed in the sources below. Federal and Remington show availability on their own product pages (for example "Available" or "Currently Unavailable"). Hornady's pages show none on our capture. We don't track retailer stock. Before you order, check your state's ammunition rules, because some states require a background check or restrict shipping.

For more ammo, see .300 WSM ammo, .338 Win Mag ammo, .270 WSM ammo, .280 Remington ammo, .25-06 Remington ammo, .338 Lapua Magnum ammo, .300 PRC ammo, 7mm Rem Mag ammo, .30-06 Springfield ammo, .308 Win ammo, 6.5 Creedmoor ammo, the .300 Winchester Magnum barrel length data, new ammo for 2026 and all ammo releases.

More comparisons: .308 Win vs .300 Win Mag.

Frequently asked questions

What is the SAAMI maximum pressure for .300 Winchester Magnum?

SAAMI lists a maximum average pressure of 64,000 psi for 300 Win Mag, measured by transducer, in ANSI/SAAMI Z299.4 (the table shows 640 in psi/100).

What grain is .300 Winchester Magnum ammo?

In our tables the bullets run from 150 gr to 200 gr. Check your firearm maker's manual for what your rifle is set up to shoot.

How fast is .300 Winchester Magnum ammo?

In our tables, listed muzzle velocities run from 2,810 fps to 3,290 fps, and muzzle energies from 3,246 ft-lb to 3,915 ft-lb. Test barrels vary, and some maker pages list none. See the test barrel section of this guide.

What does test barrel mean?

It is the barrel length the maker used to measure the listed velocity. A shorter barrel will likely give lower velocities than the box. See our .300 Winchester Magnum barrel length data.

Do you list prices or stock for .300 Winchester Magnum ammo?

No. We link only to maker pages. Where a maker page shows a status, such as "Available" or "Currently Unavailable," we copy it as of Nov. 4, 2026. Hornady's pages show none.

.300 Winchester Magnum Ammo 2026: Hunting and Range Loads From the Makers

Hunting loads

Hornady loads

Range and training loads

Barrel length matters: the test barrels

300 Win Mag: what SAAMI lists

Not yet verified

Rifles for .300 Winchester Magnum

Where to buy

Frequently asked questions

Sources

Keep exploring

Hunting loads

Hornady loads

Range and training loads

Barrel length matters: the test barrels

300 Win Mag: what SAAMI lists

Not yet verified

Rifles for .300 Winchester Magnum

Where to buy

Related guides

Frequently asked questions

Sources

Keep exploring

The Gun Release Report