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Today I am reviewing the Rocky Mountain RM405. It is a hard-hitting 405 feet per second crossbow for an affordable price. The Rocky Mountain brand was well known for its fixed-blade technology since 1979. Feradyne relaunched the Rocky Mountain brand in 2017. They develop crossbows, broadheads, sights, and various archery accessories.
Rocky mountain released its all-new crossbow line up in 2019, including four models; the RM360, RM390, RM415, and the RM405. They are all manufactured in the USA. The package includes the Rocky Mountain RM405, three Carbon Express Pile Driver arrows with field points, 4x32 illuminated scope, a quick-detach three arrow quiver with side mount, rope cocker, rail lubricant, and a user manual.
Rocky Mountain RM405 Crossbow Specs
Width Axle-to-Axle (uncocked/cocked):
Pros and Cons
First Impressions / Size and Weight
The RM405 measures a full length of 35 inches, a width of 18.5 inches uncocked, and 14.5 inches cocked. That is not among the most compact crossbows on the market, but it’s still relatively compact and the crossbow is easy to handle and offers good maneuverability. The crossbow is very lightweight, it tips our scales at a lean 7. 40 lbs.
The RM405 features a single-piece OD green stock, buttstock, and rail. This makes the crossbow really tough and durable. It has a rock-solid limb system and CNC cams. The buttstock is not adjustable but the foregrip is, you can adjust it to a custom fit when shouldered. The pistol grip is rubberized. It is also outfitted with sling swivels studs, so you can attach a shoulder sling.
Arrows and Speed
With a 14.5-inch power stroke and 200 lbs of pull weight, the RM405 shoots arrows downrange at 405 fps with 139 ft-lbs. KE knockdown power. That is enough to kill the biggest game out there, like whitetail, elk, and even bears. Rocky mountain speeds tested the crossbow with 380-grain Carbon Express arrows.
The three Carbon Express Pile Driver arrows included in the package are good quality 22″ long hunting arrows, they come with 100-grain field points. The RM405 is delivered with a quick-detach 3-arrow side-mount quiver that is interchangeable.
The RM405 comes with a 4x32 budget scope. The scope features a red or blue illuminated precision-etched multi-position reticle for adaptable to various light conditions. The scope is fog proof, shockproof, and water-resistant. To be honest it’s not a great scope by any means but it is a decent scope that considering the 405 FPS crossbow is under $300.
The crossbow’s 200 lbs draw weight. This might be much for some smaller framed hunters or hunters with a weaker back. Of course, the crossbow can be cocked with a rope cocking device and Rocky mountain provided a nice rope cocker in the package. Cocking the crossbow with the rope cocker reduces the draw weight by 50%, so you’ll only have to pull 100 pounds. The crossbow features a large stirrup that you can use when cocking the crossbow.
The RM405 is compatible with the Rocky Mountain The Quiet Crank Cocking Winch. It is currently not on Amazon but you can buy one on the website of Feradine.
Cocking the crossbow with this silent crank reduces cocking effort by 90%. The crank weighs 1 lb. and can be easily installed or removed in seconds. It has an ambidextrous design that works for both left and right-handed users.
Trigger and Safety Features
The trigger system features an Ambidextrous safety switch and a dry fire safety(DFS) system that prevents you from accidentally dry firing the crossbow, it auto engages when the crossbow is cocked.
Assembly and Sighting-In
Assembling the RM405 is very easy, even if you’ve never set up a crossbow you won’t have a problem setting up the RM405. Rocky Mountain provided an instruction manual in the package with all the info you’ll need to set up the crossbow properly. Sighting in the scope was also very easy, it only took me 2 minutes and a couple of shots.
The lightweight and relatively compact dimensions of the crossbow make sure the RM405 is comfortable to carry, hold, and shoulder. The rubberized pistol grip feels good in my hand and the crossbow is very maneuverable and well balanced.
I adjusted the forearm grip for a better fit, although I wish could adjust the stock as well it is still nice that at least the forearm can be adjusted, considering the price of the crossbow. Cocking the bow with the rope cocker that is included in the package was easy and smooth. I have no complaints there. Also, the large stirrup is really nice, I like a stirrup with a good size to it.
With the chronograph that we use to speed test all the crossbows that pass our review table, we got speeds in the range of 345-405 FPS with the Carbon Express Pile Driver arrows. The crossbow is very accurate, I repeatedly stuck the arrows in a 6″ bullseye out to 65 yards. The RM405 shoots very silently thanks to its pre-installed string stoppers and dampeners, they significantly reduce bow noise and they absorb shock and vibration upon release.
Arrows & Broadheads
If you want some fine extra arrows with good broadheads for big game hunting to accompany the RM405. Then I would like to recommend you to buy a six-pack of Carbon express PileDrivers(442-grain) and equip them with Montec M3 100gr broadheads(100-grain.)
This package does not include a shoulder sling so I would recommend buying a cheap but decent quality shoulder sling. I picked the Southland Archery Universal Black Padded Crossbow Sling.
There is no crossbow case included in the package. I recommend buying a nice budget universal crossbow case to properly store and carry the Rocky Mountain RM405.
This crossbow really is a bang for your buck. Shooting with a velocity of 405 feet per second for under $300 feels great. The crossbow comes in a ready to hunt package that contains everything to use it effectively. The only downside to this crossbow is the scope but apart from that the crossbow performs fantastic in the field and is highly accurate.
Of course, this is not one of the best crossbows on the market in any dimension but it is one of the best, if not the best 405 fps crossbows for under $300 crossbows out there. I highly recommend the Rocky Mountain RM405 for hunters on a stricter budget that still want a hard-hitting 405 fps crossbow that you can hunt the biggest game with.