Gun Digest

Getting A Grip On Wilson Combat’s .300 HAM’R

Developed for optimal terminal performance from the AR-15, the Wilson Combat .300 HAM'R shoots to be the modern day .30-30.


If you ever wanted to own Bill Wilson’s — the Bill Wilson of Wilson Combat, that is — favorite hunting cartridge, now’s your chance. After a 13-year courtship, the new .300 HAM’R is his ballistic one and only.

The author fires the .300 HAM’R during an industry event at Bill Wilson’s private ranch in Texas, where he had excellent results engaging steel targets out to 500 yards with the rifle.
The author fires the .300 HAM’R during an industry event at Bill Wilson’s private ranch in Texas, where he had excellent results engaging steel targets out to 500 yards with the rifle.

“It’s absolutely my favorite cartridge,” said Wilson. “On my ranch, I probably won’t use anything else from here on out.”

Since Wilson is one of those men who can and does have just about every kind of gun and cartridge combination there is, knowing he’s committed to just one cartridge should have your attention. So, let’s dissect the .300 HAM’R.

Another AR Cartridge?

The .300 HAM’R is an AR-15-capable cartridge created from the .223 Remington case by necking it up to .30 caliber. It’s designed to handle bullet bulletweights from 110 to 150 grains, with the overall cartridge length being 2.260 inches, the case length being 1.603 inches and sporting a 30-degree neck. Officially, Wilson Combat tells us “the .300 HAM’R was developed for optimal terminal performance and offers near .308 Winchester effectiveness, amazing accuracy and low recoil in the lightweight and compact WC15 platform.”

The 300 HAM’R is available in the WC15 Ultralight Hunter confi guration, which gives AR-platform hunters a lightweight, hard-hitting medium-gamecapable rifl e with better-than-MOA accuracy. The Ultralight Hunter WC15 trims weight everywhere it can — and nowhere it shouldn’t.

But why?

“I wanted something that would be effective at hunting most animals in North America — in a small, light package,” Wilson said.

Of course, Wilson already knew about and used the 6.8 SPC, the .300 BLK, the 5.56 NATO, his own 7.62x40mm and a host of other cartridges in his preferred WC semi-automatic platforms … yet he wanted more. Why? Maybe it was the perfectionist in him. Maybe it was his constant tinkering mind. Maybe it was because he simply could demand more, or maybe it was a combination of all three.

The Ranch Rifle Package version of the .300 HAM’R weighs 6.2 pounds and comes topped with a Trijicon Accupoint 3-9x40mm scope.

Regardless, for more than a decade, Bill Wilson whittled away at his idea of the perfect “practical range” gun. Note: Bill considers ranges out to 250 yards as practical hunting distances. “I can count on two hands — probably one hand — the number of times I’ve had to shoot farther than 250 yards,” he added. “I’ve always just gotten closer to my targets.”

Some early users of the .300 HAM’R have dubbed the AR-15 cartridge as the “modern day .30-30 Winchester,” which is quite the endorsement, referencing one of the most popular and successful hunting cartridges of all time. The team at Wilson Combat — and longtime friend of Wilson and fellow gun writer, Terrill Hoffman — thought so, too.

Need More AR Knowledge:

“During the early testing, we were calling it the .30-30 AR,” said Wilson. “That was the name on the original chamber reamer print and what we engraved on early test barrels. My buddy, Terrill, said something to the effect of, ‘Only us old guys know and care much about the old thuty-thuty.’ So, we came up with a bunch of potential names, and my son, Ryan, said, ‘We just came out with the .458 HAM’R and we have a trademark on HAM’R … so let’s call it the .300 HAM’R!’

The Bill Wilson Ranch Rifl e features a threaded, matchgrade barrel with Circle WC Ranch logo.

“Now, 13 years later, after thousands of rounds downrange, several scrap barrels and hundreds of dead Texas feral hogs, we have the .300 HAM’R that not only meets all of my original goals, but it exceeds them.”

Not surprisingly, Wilson’s research and results back up his claims.

Why The .300 HAM’R Is Worth A Look

Wilson Combat’s website serves host to Bill’s own testimony that terminal performance testing, on more than 200 Texas feral hogs, has proven the .300 HAM’R to kill much more effectively than the 6.5 Grendel, 6.8 SPC, 7.62×39 or 300 BLK. Again, that’s on the Wilson Combat website, but it’s a bold statement.

The Ranch Rifl e is Bill Wilson’s personal choice from years of hunting his private ranch in Texas — the .300 HAM’R spent 13 years in development. Wilson wanted a short, accurate, reliable and hard-hitting gun capable of hunting the majority of North American game animals.

One of the reasons the .300 HAM’R is Wilson’s favorite is because of its designed accuracy.

“I really like accurate guns, and it’s laser accurate,” said Wilson. He credits the cartridge’s accuracy to its marriage of bullet weights to twist rates.

“Accuracy has proven to be outstanding,” he added. “Sub MOA groups are the norm with multiple bullet choices for varying applications, such as hunting, target shooting and tactical use.”
Wilson didn’t try one or even two different recipes to get bullets to stabilize: He was thorough.

.300 HAM'R Vs. .300 Blackout


.300 HAM’R .300 BLACKOUT
16.25-inch barrel 16.25-inch barrel
Sierra 110-grain HP: 2,600 fps @ muzzle, 1,651 ft-lbs. @ muzzle Hornady Black 110-grain V-MAX: 2,395 fps @ muzzle, 1,401 ft-lbs. @ muzzle
Sierra 125-grain SBT: 2,520 fps @ muzzle, 1,763 ft-lbs. @ muzzle Hornady 125-grain HP American Gunner: 2,175 fps @ muzzle, 1,313 ft-lbs. @ muzzle
Sierra 135-grain HP Varminter: 2,400 fps @ muzzle, 1,727 ft-lbs. @ muzzle Hornady 135-grain FTX: 2,055 fps @ muzzle, 1,266 ft-lbs. @ muzzle
Hornady 150-grain SST: 2,240 fps @ muzzle, 1,671 ft-lbs. @ muzzle Federal 150-grain Fusion: 1,900 fps @ muzzle, 1,202 ft-lbs. @ muzzle

“I did a lot of work finding the right twist rate for the .300 HAM’R,” said Wilson. “We ran everything from 1:10, 1:11, 1:12, 1:13 and 1:14, and ultimately what we learned was the 1:15 twist rate gave us the best accuracy with consistent ½-inch groups — and my best three-shot group measuring .160 at 100 yards. The 1:15 twist rate is right at the cutting edge for stability in the 125- to 130-grain bullets. The 130-grain bullet running at about 2,520 fps is the sweet spot for the .300 HAM’R. I’ve found that the 130-grain Speer Hot Core and the 150-grain Hornady SST bullets work the best.”

Built Around the WC15

One big advantage of the .300 HAM’R is that it comes in a Wilson Combat semi-auto rifle. I’ve been fortunate enough to hunt with Wilson for pigs and Nilgai, using all three WC platforms: the WC10, the WC12 and the WC15 — and every experience has been mechanically superb with flawless terminal performance from any cartridge he recommended during the hunts. Regardless of the cartridge a gun owner chooses, Wilson Combat rifles are some of the best available because of that same attention to detail and perfection, which helped create the .300 HAM’R.

“We’ve spared no expense in development, testing and production of our rifles,” said Wilson. “If we could build a better one — we would. A big advantage Wilson Combat has is the fact that I’ve been a serious hunter since the early ‘70s, and I obviously have a very keen personal interest in Wilson Combat making the very best ARs on the market, whether for hunting or tactical use.

This exploded view of a disassembled WC Ranch Rifle shows the WC15 in its basic sections

“I’m shooting and testing AR product virtually on a daily basis” he added. “Here at the ranch, we’re fortunate to have shooting ranges out to 800 yards for extensive accuracy testing. Also, I hog hunt at least 325 days out of the year, and I’m also deer hunting more than 120 days a year, with annual harvests of 200-plus hogs and 50-plus deer, all with ARs. Who else proves their product like that?”

The .300 HAM’R is available in five different WC15 configurations: The Ultralight Ranger, the Ranger, the Ultralight Hunter, the Tactical Hunter and the Bill Wilson Ranch Rifle package.

Lastly, during a recent phone interview with Wilson about this cartridge, he informed me he was headed to an elk hunt with his new .300 HAM’R. Yes, Wilson sees his .300 HAM’R as an elk gun — he sees it as a hog, deer, black bear, coyote and pronghorn gun, too.

Bill Wilson gets some trigger time with his creation, the .300 HAM’R, at his private ranch in Texas.

In typical Bill Wilson style, a few days later he backed up his words with results. While I was copyediting this story, I got an email from Bill Wilson telling me he just shot a 4×5 management bull elk at 175 yards with his .300 HAM’R, loaded with a Hornady 150-grain SST.

“The bullet entrance was 6 inches behind the front shoulder, and the perfectly expanded bullet was recovered under the skin on the off-side shoulder,” Wilson said. “I’m guessing 75 percent weight retention. The elk ran 20 yards and was down. I don’t know how you could ask for more.”

No, Bill Wilson: I don’t know how I could ask for anything more — but chances are good that, if there’s more to be had, you’ll find it.

For more information on the .300 HAM'r, please visit

Editor's Note: This article originally appeared in the December 2018 issue of Gun Digest the Magazine.

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