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7mm PRC vs .300 PRC: Maker-Page Loads and SAAMI Specs Side by Side

By Cole Harlan, EditorUpdated Nov 5, 2026How we verifyEditorial standards

This page puts 7mm PRC and .300 PRC side by side using only our own ammo guides, 7mm PRC ammo (13 loads) and .300 PRC ammo (10 loads), plus the cartridge specs SAAMI publishes in ANSI/SAAMI Z299.4, its centerfire rifle standard. The guides copy bullet weights, velocities, energies and test barrels from maker product pages (checked Nov. 4, 2026). We don’t rate or rank cartridges, and we don’t subtract one maker’s velocity from another’s, because their test barrels differ.

How to read this page: every number is copied from a maker page or from SAAMI, and a test barrel length sits next to every velocity (or says the maker lists none). A dash (—) means the maker has no load in our tables for that cartridge. Fire only the cartridge your rifle’s maker says it is chambered for.

SAAMI specs side by side

These are the figures in ANSI/SAAMI Z299.4 (approved Feb. 10, 2025), as already recorded in the SAAMI sections of our 7mm PRC and .300 PRC guides. Pressures are as SAAMI lists them.

Measure	7mm PRC	.300 PRC
SAAMI name	7MM PRECISION RIFLE CARTRIDGE [7MM PRC]	300 PRECISION RIFLE CARTRIDGE [300 PRC]
Drawing issued / revised	06/07/2022 / no revision date shown	06/13/2018 / 02/17/2022
Maximum average pressure (transducer)	65,000 psi	65,000 psi
Crusher pressure	Not established	Not established
Cartridge overall length	3.090 in min to 3.340 in max	3.575 in min to 3.700 in max
Case length	2.280 in (−.020)	2.580 in (−.020)
Bullet diameter	.2844 in (−.0030)	.3084 in (−.0030)
Bore / groove diameter	.277 in / .284 in	.300 in / .308 in
Twist	1 in 8.00 in, right-hand (marked optional), 6 grooves	1 in 8.50 in, right-hand (marked optional), 6 grooves
SAAMI reference velocity (15 ft from test barrel)	2,950 fps for 180 gr	2,800 fps for 225 gr
SAAMI velocity test barrel	24.000 in (±.010), 1:8.00 twist, 6 grooves	24.000 in (±.010), 1:8.50 twist, 6 grooves

The two reference velocities are for different bullet weights (and different bullet diameters), so they are not a like-for-like speed comparison.

Load ranges by maker and test barrel

Each line groups one maker’s loads that share a test barrel, so a velocity is only ever shown with the barrel it was measured in. Ranges are bullet weight and muzzle velocity as the maker page prints them. Do not read across makers: their barrels and bullets differ. For how barrel length moves velocity, see our barrel length vs velocity data.

Maker	7mm PRC loads in our table	.300 PRC loads in our table
Federal	test barrel not listed: 5 loads, 155 to 195 gr, 2,760 to 3,100 fps	test barrel not listed: 2 loads, 210 to 212 gr, 2,850 to 2,860 fps
Hornady	24 in test barrel: 4 loads, 154 to 180 gr, 2,975 to 3,030 fps	24 in test barrel: 5 loads, 165 to 225 gr, 2,810 to 3,200 fps
Berger	24 in test barrel: 2 loads, 175 to 195 gr, 2,800 to 2,920 fps	26 in test barrel: 3 loads, 205 to 245 gr, 2,720 to 2,985 fps
Nosler	24 in test barrel: 1 load, 160 gr, 3,031 fps test barrel not listed: 1 load, 175 gr, 3,000 fps	—

Same maker, same line, both cartridges

Where one maker sells the same product line in both cartridges, the loads are listed side by side exactly as the maker pages print them. We match lines by the maker’s own product-line name in our guide tables. Compare only within a row, and check the test barrel in each cell.

Maker line	7mm PRC	.300 PRC
Federal ELD-X	175 gr ELD-X, 3,000 fps, 3,497 ft-lb, test barrel not listed, item P7PRCELDX1	212 gr ELD-X, 2,860 fps, 3,850 ft-lb, test barrel not listed, item P300PRCELDX1
Federal Terminal Ascent	155 gr Terminal Ascent, 3,100 fps, 3,307 ft-lb, test barrel not listed, item P7PRCTA1 170 gr Terminal Ascent, 2,950 fps, 3,285 ft-lb, test barrel not listed, item P7PRCTA3	210 gr Terminal Ascent, 2,850 fps, 3,787 ft-lb, test barrel not listed, item P300PRCTA3
Hornady American Whitetail Tipped	154 gr SST® American Whitetail® TIPPED, 3,030 fps, 3,139 ft-lb, 24 in test barrel, item 80714	165 gr SST® American Whitetail® TIPPED, 3,200 fps, 3,751 ft-lb, 24 in test barrel, item 82163
Hornady Match	180 gr ELD® Match, 2,975 fps, 3,439 ft-lb, 24 in test barrel, item 80711	225 gr ELD® Match, 2,810 fps, 3,945 ft-lb, 24 in test barrel, item 82162
Hornady Outfitter	160 gr CX® Outfitter®, 3,000 fps, 3,197 ft-lb, 24 in test barrel, item 80713	190 gr. CX® Outfitter®, 3,000 fps, 3,797 ft-lb, 24 in test barrel, item 82164
Hornady Precision Hunter	175 gr ELD-X® Precision Hunter®, 3,000 fps, 3,497 ft-lb, 24 in test barrel, item 80712	212 gr ELD-X® Precision Hunter®, 2,860 fps, 3,850 ft-lb, 24 in test barrel, item 82166
Berger Elite Hunter	175 gr Elite Hunter, 2,920 fps, 3,314 ft-lb, 24 in test barrel, item 52810 195 gr Elite Hunter, 2,800 fps, 3,395 ft-lb, 24 in test barrel, item 52820	205 gr Elite Hunter, 2,985 fps, 4,057 ft-lb, 26 in test barrel, item 55010 245 gr Elite Hunter, 2,720 fps, 4,025 ft-lb, 26 in test barrel, item 55020

What the sources say when you choose

These are points taken from the figures above, each with the page it rests on. They are not recommendations or scores.

If pressure rating is your question: SAAMI lists a maximum average pressure of 65,000 psi by transducer for both 7mm PRC and .300 PRC, and establishes no crusher pressure for either. Source: ANSI/SAAMI Z299.4.
If bullet weight is your question: the 7mm PRC loads in our table run from 154 gr (Hornady American Whitetail Tipped 80714) to 195 gr (Federal Berger Elite Hunter P7PRCEH1). The .300 PRC loads run from 165 gr (Hornady American Whitetail Tipped 82163) to 245 gr (Berger Elite Hunter 55020). Sources: those maker pages.
If you want to see the printed velocities: the slowest and fastest 7mm PRC muzzle velocities in our table are 2,760 fps, test barrel not listed (Federal Berger Elite Hunter P7PRCEH1) and 3,100 fps, test barrel not listed (Federal Terminal Ascent P7PRCTA1). For .300 PRC they are 2,720 fps, 26 in test barrel (Berger Elite Hunter 55020) and 3,200 fps, 24 in test barrel (Hornady American Whitetail Tipped 82163). These come from different barrels and bullets, so we show them side by side without a difference. Sources: those maker pages.
If you are comparing against a box or a chronograph: SAAMI’s rifle test barrel is 24.000 in (±.010) for both cartridges. Many maker pages list a different barrel or none, as the tables above show. A shorter barrel than the one a maker lists will likely give lower velocities than the box; see our barrel length vs velocity data. Source: ANSI/SAAMI Z299.4 and the maker pages linked above.
If chamber fit is your question: SAAMI publishes a separate cartridge drawing for each, with case length 2.280 in (−.020) for 7mm PRC and 2.580 in (−.020) for .300 PRC, cartridge overall length 3.090 in min to 3.340 in max and 3.575 in min to 3.700 in max, and bullet diameters of .2844 in and .3084 in. Check the cartridge named in your rifle’s manual or marked on its barrel. Source: ANSI/SAAMI Z299.4.

Not yet verified

Winchester and SIG Sauer loads are not in either guide’s table (see the “Not yet verified” section of each guide).
A dash in the range table means the maker has no load in that guide’s table, not that the maker sells none.
We have no 7mm PRC or .300 PRC barrel-length-velocity page, so this page shows no barrel-length corrections.
Federal’s 7mm PRC pages showed “Currently Unavailable” on Nov. 4, 2026, per our 7mm PRC guide; stock changes, so check the maker.
Prices, recoil, accuracy and hands-on results are not in our data, so this page says nothing about them.

See the full tables in our 7mm PRC ammo and .300 PRC ammo, the barrel length vs velocity data, 6.5 PRC vs .300 PRC, 6.5 Creedmoor vs 6.5 PRC, .308 Win vs .300 Win Mag, 7mm Rem Mag vs 7mm PRC, .300 Win Mag vs .300 PRC, the new ammo of 2026, all ammo releases and all comparisons.

Frequently asked questions

What is the SAAMI maximum pressure for 7mm PRC and .300 PRC?

SAAMI lists 65,000 psi for both, measured by transducer, in ANSI/SAAMI Z299.4.

Do 7mm PRC and .300 PRC use the same bullet diameter?

No. SAAMI lists .2844 in (−.0030) for 7mm PRC and .3084 in (−.0030) for .300 PRC in ANSI/SAAMI Z299.4.

Which test barrel do the makers list?

It varies by maker and load. SAAMI's rifle test barrel is 24 in for both cartridges. Our tables show the barrel each maker page lists next to every velocity, and many pages list none.

Which is better, 7mm PRC or .300 PRC?

We don't rate or rank cartridges. This page copies maker-page figures and SAAMI specs side by side, and it does not cover price, recoil or hands-on results.

Where do these numbers come from?

From our own ammo guides (7mm PRC ammo and .300 PRC ammo), which copy maker product pages, and from ANSI/SAAMI Z299.4.

SAAMI specs side by side

Load ranges by maker and test barrel

Same maker, same line, both cartridges

What the sources say when you choose

Not yet verified

Related guides

Frequently asked questions

Sources

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