Description
The Beretta BRX1 300 Win Mag Black is the magnum in Beretta’s straight-pull line, and it is the configuration where the action earns the most. A .300 Winchester Magnum recoils hard enough that a conventional bolt lift breaks your position entirely; a straight-pull keeps the cheek on the stock and the scope roughly where you left it, which is the only way to see where a magnum shot landed.
This is part number JBRX1E331/22: .300 Win Mag, five rounds plus one, a 22-inch threaded black steel barrel, an integral Picatinny rail and a black synthetic stock with a fixed negative comb and adjustable length of pull.
Why a magnum benefits most from a straight-pull
- No bolt lift, so the shooting position survives a cartridge that tries to break it
- The scope stays roughly on target through the cycle, letting you call your own shot
- A fast second shot on a wounded animal, which matters more at magnum ranges
- The bolt handle swaps sides, so the Beretta BRX1 300 Win Mag Black works left-handed without special order
- A threaded muzzle, so a brake can be fitted to tame the recoil directly

Twenty-two inches on a magnum
- Shorter than the traditional 26-inch magnum barrel, and much easier to carry
- Costs some velocity against a longer tube, which a brake and good load selection offset
- Keeps the rifle balanced between the hands rather than muzzle-heavy on a long stalk
- Fits in a truck, a stand and a scabbard without fighting you
- Still enough barrel to burn most of the powder a .300 Win Mag case holds
Specifications
- Manufacturer: Beretta USA
- Part number: JBRX1E331/22
- Caliber: .300 Winchester Magnum
- Capacity: 5+1
- Barrel length: 22 inches, threaded
- Barrel: Black steel
- Receiver: Black, with integral Picatinny rail
- Stock: Black synthetic, fixed negative comb
- Length of pull: Adjustable
- Action: Straight-pull bolt
- UPC: 082442981475
Brakes, threads and what is regulated
The muzzle on the Beretta BRX1 300 Win Mag Black is threaded, and on a .300 Win Mag a brake is worth serious consideration. It will roughly halve felt recoil and make the difference between a rifle you practise with and one you shoot twice a year. It will also make it considerably louder for anyone standing beside you, so bring hearing protection for your spotter.
A suppressor is an NFA item requiring an ATF application and approval before transfer, and MAG5 Firearms does not deal in NFA items. If you handload, a 300 Winchester Magnum deluxe die set is in stock. Cartridge dimensions and maximum pressures are published by SAAMI.
Getting the scope right
The rail on the Beretta BRX1 300 Win Mag Black is machined into the receiver, so standard Picatinny rings fit directly with no base. On a magnum that matters more than on a mild cartridge, because a bolted base is one more interface that recoil can work loose.
Check your scope’s eye relief carefully before settling on ring position. A .300 Win Mag is unforgiving of a scope mounted too far back, and snap caps make dry-fire practice on the straight-pull stroke safe and repeatable.
Why this rifle earns its place
- The straight-pull action delivers most on a cartridge that recoils this hard
- The Beretta BRX1 300 Win Mag Black keeps the scope picture through the cycle, which no turn-bolt magnum does
- Barrels and bolt heads are user-changeable, so one action covers several calibres
- A receiver-integral rail, which holds zero better than any bolted base under magnum recoil
- A threaded muzzle and an adjustable length of pull as standard
The Beretta BRX1 300 Win Mag Black suits elk, moose and open-country hunting where the shot may be long and the second shot matters. The same rifle is offered with an OD Green stock, with a carbon-wrapped 24-inch barrel, and in milder 6.5 Creedmoor.
All firearm purchases ship to a licensed dealer and require a completed background check. Contact MAG5 Firearms if you need help arranging the transfer.






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