I haven’t done so myself, but supposedly the guys living in Ohio have confirmed it’s legal. Even though the SAAMI spec is 9mm Pistol bullets, instead of .357” rifle bullets.

Can you buy a .357 max AR-15 on the shelf at your local gun shop?

That’s how it compares.

This speculation has been passed around a lot recently, but it is NOT supported by the SAAMI specs for the rounds.

The SAAMI spec for the .350 Legend is .357”-0.003”, whereas the .357 max, like the .357magnum and 38spcl, is .359-.003” for lead and .358”-0.003” for jacketed bullets. They all use the same .355” groove & .346” bore specification. Guys have mic’d the factory ammo to reflect .355” bullets being used. As noted, ODNR doesn’t care - they’ve listed it as legal for use, but it has raised the question.

Personally, I never have been satisfied by using .358” rifle bullets in .357 max or .357/44 B&D, but drawing them down with the Lee sizing die is a quick, easy, and inexpensive step to ensure fit.

It matches or slightly exceeds the Max in the same barrel length.

125yrds is certainly short changing the 350. It shoots flatter than your 450 Bushmaster, and has plenty of bullet mass and punch to do the job. You might not be impressed by a smaller diameter cartridge, but calling it out as a 125 yard round isn’t a fair shake, not in the least.

No, a 22 doesn’t shoot flatter than a 450 Bushmaster. I think you’ve been mislead by a lot of speculative conjecture from fools.

A 22 Long Rifle will push a bullet around 1100fps, whereas your Bushmaster with standard loads should be pushing 1800-2200fps, with an inherently better ballistic coefficient.

It’s great you enjoy your 450 Bushmaster, but you’re displaying an obvious bias. Many, many cartridges will deliver fast kills on game, and the 450 Bushmaster certainly is not the least of them - implying anything with less energy would slip below some “cut off limit.” If you’d come in talking about your actual negative experience with the .350 Legend, or similar cartridges like a 357max, 38-55, 357mag rifle, 357/44 B&D, .358 Winchester, .375 win, etc, and contrasting those against your experience with the .450bushmaster, you’d have an objectively defensible case. But just saying “the 450 Bushmaster is more powerful, and I like it,” isn’t really any evidence the .350 Legend won’t perform well.

Your 125 yard limit assertion, which is what I questioned, remains to be undefended by your assertions of superiority in the 450 Bushmaster. When “enough is enough,” then “more enough” isn’t really anything.

Folks have been killing game with cartridges similar to the 350 Legend for over a hundred years - if it were insufficient for the task, we’d have figured that out a long, long time ago.

For sake of comparison, thousands upon thousands of deer have been killed by .357 mags which truck around 500 ft.lbs. at the muzzle, and only 400 ft.lbs. upon impact. Noting, of course, the obvious similarity in bullet diameter, weight, and construction, with all advantages in these classes favoring the Legend.

Ernie Bishop, as a particular example, has shared his experience (far beyond my personal comfort with .357mag) taking a beautiful pronghorn at 189 yards with a custom .357mag shooting factory ammo. If the paltry .357mag can manage game at that range, the 350 Legend will have no trouble, touting twice the punch.

I used to hunt with .357 max, then a 357/44 Bobcat mag, and now a .357/44 B&D Magnum in revolvers which don’t quite match the .350 Legend in a rifle, falling a couple hundred feet per second behind in short barrels. I consider a 180grn bullet running 1800-1900fps from the muzzle to be ideal for whitetail hunting out to 250 yards from a revolved. Again, performance surpassed by the .350 Legend in a rifle.

There are a handful of AR cartridges I would recommend for anyone outside of a Straightwall state over the 350 Legend, but it’s certainly a viable option in any state.

I have two rounds on my “next AR list,” just to say I’ve had them and understand firsthand any unique implications. The 224 Valkyrie and 350 Legend. Whether they earn a permanent spot in my stable would remain to be determined after wringing them out, but the Valkyrie, I don’t expect to keep. The Legend is a pretty hard “maybe.” I could use the same 180grn HotCors as I use in my 357/44 B&D, and there are several questions in the field I regularly have which could be well answered by a 180-220 grain bullet at ~2,000fps.

I’ll need a 35 or 45 cal suppressor though, and will likely put it on a 10.5” or 12.5” SBR upper.