Bow Review: Prime Form

The first of its kind, Prime’s 2025 flagship bow — the Form — is a hybrid created using unique engineering principles to connect carbon and aluminum at key points of the riser.

Bow Review: Prime Form

The author found the Prime Form incredibly stable and balanced, even while shooting in blustery crosswinds. A tight 40-yard group like this was practically automatic during his field test.

As a society, it’s fair to say that most people would rather blend in than stand out. A small fraction of us, though, dare to be countercultural; you know, go against the grain at the expense of being viewed as weird or different. To some extent, however, embracing “different” is culturally healthy. Do we want to foster a culture of uniqueness and genuineness, or one in which everyone is a me-too of someone else?

That makes me think of compound bows. Stunningly, manufacturers have done a terrific job of being different. Sure, features such as Picatinny sight mounts, Integrate rest mounts, and roller guards are present virtually across the board, but the physical appearances, cam systems, and risers are quite unique from bow to bow. Set six high-end bows from different manufacturers side by side, and I believe you’ll agree that no two look very similar.

Craftsmanship-wise, no single bow model stands out more than Prime’s 2025 Form. On some fronts, it rewrites the engineering book and is arguably the first of its kind. For customers ready to embrace different, here’s what they’ll find when you put a Form in their hands.

     

An Engineering Wonder

A compound bow has many parts, but the riser arguably has the biggest job. You can have the best-tuned cam system, a bowstring and cable system with impeccable tolerances, and the most dependable limbs, but a weak riser will be a stumbling block. Often, we as archers and even bow technicians view the riser as one big thing rather than seeing the anatomy. Like a bridge, a riser appears as one big thing, but its different portions are subject to different loads, and require unique features and materials.

For approximately 10 years, Prime engineers have dissected riser anatomy with carbon conceptualizations in mind. They’ve drilled down on the riser’s key points and have experimented with different materials in different places until finally settling on the Form. So, if you’re thinking that Prime simply unveiled the Form in one year for the sake of being different, think again. Yes, it is different, but the bigger picture is that the right materials are in the right places to optimize durability and dependability, which are irreplaceable attributes in the bowhunting wilds.

The culmination of Prime’s 10 years of carbon-riser development is Advanced Structures Technology (AST). Not only does the technology locate the right materials in the right places, but the processes used to join the forces have been perfected. Stiffness is a bow riser’s most important detail, and the American-made carbon rods that bridge between the three sections of machined aluminum enhance stiffness by 47.5 percent, while shedding a half-pound of mass weight from the bow. And in terms of aesthetics, the Form is futuristically flawless.

The perfect mousetrap comes from putting the right materials in the right places at the riser’s key points. American-made carbon rods enhance stiffness by 47.5 percent while shaving off half of a pound of mass weight.
The perfect mousetrap comes from putting the right materials in the right places at the riser’s key points. American-made carbon rods enhance stiffness by 47.5 percent while shaving off half of a pound of mass weight.

Swerve and Center Grip Riser

If you’re worried that Prime sidelined its Swerve and Center Grip Riser for this build, fear not. The Swerve appears a little different than on Prime’s all-aluminum risers, but as with past designs, it reduces riser movement and alleviates a lot of torque that a riser normally becomes subject to as the bow is drawn and shot. A stiff riser is important, but a design feature such as Swerve Technology can further enhance bow performance by alleviating riser torque and the associated movements.

The Form’s Center Grip Riser causes the bow to deliver heaps of stability, which Prime shooters have raved about for years. With equal amounts of riser above and beneath the Nano Grip’s throat, pin movement decreases by up to 64 percent per testing results before the Center Grip’s inaugural launch some years ago. If your customers complain about not being steady enough with their current bow, perhaps a Prime with a Center Grip Riser is the missing link.

The Nano Grip continues to lead the way with a virtually torque-free fit and cold-weather comfort via NASA-developed Aerogel.
The Nano Grip continues to lead the way with a virtually torque-free fit and cold-weather comfort via NASA-developed Aerogel.

Everyone has their own preferences, but the proven Nano Grip is probably the most naturally fitting grip available. It’s extremely difficult to torque, which becomes a big deal during an intense hunting encounter. The modular composite grip covers both the back and front of the riser, which prevents hand-on-aluminum contact to maximize hand comfort during frigid conditions. Prime also puts NASA-developed Aerogel between the riser and composite grip as a thermal break — another measure that keeps the shooter’s hand from instantly freezing to the bone.

The CORE Cam is the Form’s engine. It aligns the bowstrings and cables through the draw cycle to yield a system that tunes up like a champ. Further tuning is possible with Quik Tune spacers, which push the cam left or right on the axle.
The CORE Cam is the Form’s engine. It aligns the bowstrings and cables through the draw cycle to yield a system that tunes up like a champ. Further tuning is possible with Quik Tune spacers, which push the cam left or right on the axle.

The Engine

The Form features Prime’s proven CORE Cam. It is designed to align the bowstring and cables, and perfectly balance the cams throughout the draw cycle to provide the truest tune possible. Further tuning is possible with Quik Tune spacers, which can be changed by pressing the bow but without pulling the axle, to push the cam to the left or right on the axle.  

The CORE Cam’s draw mods are length-specific to boost efficiency and maximize performance at every setting. Users can also pick between 75 and 85 percent let-off. I tested the Form at 85 percent. I held it at full draw for slightly over 2 minutes and still felt steady enough to place an accurate shot. 

The CORE Cam’s other win is it’s silky smooth to draw and let it down. I intentionally drew it back and let down (with an arrow on the bowstring) in succession, and I am blown away by how smooth the process is. It’s hard to believe that the test bow peaked at 72.4 pounds. I’m not kidding when I say that it feels like 65 pounds. It’s truly that smooth.  


Test and Evaluation

Accuracy was easy to come by right out of the gate. I tested the Form outdoors at 20 to 60 yards on a cold, blustery day in my Wisconsin yard. The crosswind was annoying, but the Form proved it could group even in challenging conditions that are realistic to what you can expect when bowhunting. Whether I shot individual dots at 20 yards or groups at 40-60 yards, the Form delivered consistently despite the winds. What’s nice is it has a 34-inch axle-to-axle design, but due to its hybrid construction, it weighs a lightweight 4.1 pounds that, when accessorized, feels like a dream come true.

As usual with Prime bows, I found the Form to be incredibly stable and balanced, which are products of the long, stiff riser and the Center Grip design that I mentioned earlier. Pin float is minimal because the bow is engineered to hold as steady as possible.

I don’t have a decibel meter, but I don’t believe the Form is the quietest bow of all time, though it doesn’t have string silencers other than the string cushion. A lot of bows come with add-on string dampeners, which I assume would alleviate some of the buzz. Another thing I believe would improve the Form’s stealth would be to utilize accessories compatible with the Picatinny sight mount and the Integrate rest mount for more direct accessory connections. By the way, those mounts are integrated directly into the riser and aren’t machined pieces bolted to the riser. The result is a simpler, more rigid design. Anyway, I’m not at all calling the Form “loud,” but add-on string silencers and direct-mount accessories would push the stealth needle forward.


A Few More Things

I can’t ignore the fact that Prime offers free strings for the bow’s life. As a dealer, you’ll still be able to charge your hourly service fee for installation, but the customer gets the break of free strings, which is a value-added talking point when selling the bow. And from the testing I’ve done with Prime bows over the years, the strings and cables are high-quality and deliver consistency and dependable peep rotation. 

Also new for 2025 is Prime’s Sherpalite Quiver. It is available in one- and two-piece designs. The quiver is designed to be adjusted to a position that works for bow balance and to keep the bow’s lateral profile as tight as possible. Dual arrow grippers secure arrows of any diameter, and the Easy Twist Locking System streamlines the locking and unlocking process.


Dare to Be Different

As I said earlier, bow manufacturers have done a fabulous job designing bows that are unique to their individual brands. But, Prime’s Form is a new animal that resembles literally nothing else on the market. In a go-with-the-flow world, some folks dare to be different, and I’d imagine that those folks will welcome the all-new Form — and all of the accuracy and benefits it delivers — with open arms.

Prime Form
Prime Form

Sidebar: Test Bow Specs

  • Axle-to-Axle Length: 34 inches
  • Brace Height: 6.25 inches
  • Draw Length: 28 inches
  • Draw Weight: 72.4 pounds
  • Let-off: Up to 75-85% (tested at 85%)
  • Bow-only Weight: 4.1 pounds 
  • Accessorized Total Weight: 5.3 pounds (including sight, rest, and front stabilizer)
  • Velocity: 274 fps (with 468-grain Easton 6.5mm Acu-Carbon 340 arrow); 276 fps (with 456-grain CX Maxima Triad 350 arrow); 281 fps (with 441-grain Victory VAP SS 350 arrow); 297 fps (with 388-grain CX Predator 350 arrow)
  • Kinetic Energy: 78.04 foot-pounds (Easton); 77.15 foot-pounds (CX Triad); 77.34 foot-pounds (Victory); 76.02 foot-pounds (CX Predator)
  • Test-Bow Finish: Recon Gray
  • MSRP: $1,595
  • Contact: www.g5prime.com  


Additional Notes: The Prime Form was set up using a Last Chance Archery EZ Green Bow Press and EZ Green Bow Vise, and the draw weight was calculated using Last Chance Archery’s Digital Bow Scale. A Caldwell Ballistic Precision Chronograph measured the arrow velocities. Other products used were Easton’s Nock and D-Loop Pliers and Pro Hex Fold-Up Allen Set. Arrows were weighed on Last Chance Archery’s Pro Grain Scale.



In-the-field photos by Darron McDougal



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