Description

Federal 300 WM 165gr TSX Lead Free ammunition loads a 165 grain Barnes TSX bullet into the 300 Winchester Magnum. Federal lists a muzzle velocity of about 3050 feet per second and a ballistic coefficient of .398, which works out to roughly 3409 foot-pounds of muzzle energy by standard calculation. Each box holds 20 rounds.
All-Copper Penetration and Expansion
The Barnes Triple-Shock X is an all-copper hollow point. With no lead core to separate from a jacket, Federal says it retains nearly 100 percent of its weight on impact, which drives deep penetration on big game.
A deep hollow-point tip opens into large, consistent petals, giving you a wide wound channel along with that penetration.
Grooves on the bullet shank reduce pressure and barrel fouling and help accuracy. Because it is lead-free, the TSX is also a good fit where regulations limit lead ammunition.
Federal 300 WM 165gr TSX Lead Free Specifications
These figures follow Federal’s published data for item P300WR. Federal’s product page lists UPC 604544647853, which matches this listing.
- Brand: Federal Premium
- Product line: Barnes TSX
- Manufacturer item number: P300WR
- Caliber: 300 Winchester Magnum
- Bullet: 165 grain Barnes TSX
- Muzzle velocity: about 3050 fps
- Muzzle energy: about 3409 ft-lbs (standard calculation)
- Ballistic coefficient: .398
- Usage: big game and long-range hunting
- Rounds per box: 20
Hunting Tips
Use Federal 300 WM 165gr TSX Lead Free ammo only in rifles chambered for 300 Winchester Magnum.
Zero your rifle with this exact load, then confirm your holds at the longest distance you expect to shoot.
Aim for the heart and lung area on a broadside or slightly quartering animal for quick, ethical results.
Practice from field positions such as sitting, kneeling and shooting off sticks before the season.
Federal 300 WM 165gr TSX Lead Free ammo is a hard-hitting choice for hunters after elk, moose and other large game.
The 300 Winchester Magnum is a go-to cartridge for elk and moose at long range. A 165 grain all-copper TSX gives Federal 300 WM 165gr TSX Lead Free ammo high velocity and deep penetration, and it works in areas that require non-lead ammunition.
Before the season, shoot a few groups with Federal 300 WM 165gr TSX Lead Free ammo from a solid rest, then practice from the positions you will actually hunt from. A rifle that groups well off the bench is only part of the picture; being able to hold steady from sitting, kneeling or off shooting sticks is what fills tags.
After the shot, give the animal time before you follow up, and mark where it was standing. A soft point bullet that does its job usually leaves a good blood trail, but patience makes recovery much easier.
Clean your rifle after the hunt and store it with a light coat of oil, especially if it was out in rain or snow.
Premium hunting ammunition costs more than practice loads, so many hunters zero with a box of the same load they will hunt with and then confirm their dope before each season. Buying several boxes of Federal 300 WM 165gr TSX Lead Free from one lot keeps your point of impact consistent from year to year.
Wind and range estimation matter as much as the bullet. Use a rangefinder, learn how your load drifts in a crosswind, and practice at the distances you expect to shoot. Store ammunition in a cool, dry place in its original box so it performs the same on opening day as it did at the range.
Looking for a rifle to shoot it in? Check out the Springfield 2020 Boundary 300 Win Mag, or read more on Federal’s Barnes TSX 300 Winchester Magnum page.









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