The RCBS Trim Pro-2 Kit is a manual, bench‑mounted case trimmer package designed to bring metallic cartridge cases back to a consistent, safe length during case prep. It uses a spring‑loaded universal shellholder and caliber‑specific pilots to guide a hardened steel cutter, giving repeatable trim length for most common rifle and pistol cartridges. It is aimed at hobbyist to moderate‑volume reloaders who want a durable, traditional trimmer rather than a high‑speed powered system.
| Field | Value |
|---|---|
| Type | Bench‑mounted manual case trimmer kit |
| Primary use | Trimming bottleneck and straight‑wall cases to uniform length; basic chamfer/deburr prep |
| Brand | RCBS |
| Model | Trim Pro-2 Kit (Trim Pro-2 Case Trimmer Kit) |
| MPN (kit) | 90366 – Trim Pro-2 Kit with universal shellholder and accessories |
| Related MPNs | 90365 – Trim Pro-2 Manual Case Trimmer (trimmer only); 90355 – original Trim Pro (older design, collet style) |
| Materials | Cast metal base and body (aluminum alloy) with steel cutter shaft, hardened steel cutter head and pilots, steel universal shellholder jaws, plastic knob on crank handle |
| Dimensions (approximate) | Length: ~12–13 in; width: ~4–5 in; height: ~5–6 in (trimmer body only) |
| Weight | Approx. 3–4 lb for full kit (trimmer body ~2.5–3 lb) |
| Power source | None – fully manual hand‑crank |
| Warranty | RCBS limited lifetime warranty for the original owner (non‑electronic tools) |
| Country of origin | USA (typical for RCBS case prep tools; confirm on current packaging) |
| MSRP (approximate) | About $190–$220 USD for the Trim Pro-2 Kit |
| Typical street price (approximate) | Roughly $150–$190 USD at major retailers, depending on sales and availability |
What’s In The Box
Included with the standard RCBS Trim Pro-2 Kit (MPN 90366):
- RCBS Trim Pro-2 manual case trimmer body with:
- Cast metal base and upright column
- Hardened steel cutter shaft with hand‑crank handle
- Adjustable case length stop with lock screw
- Integrated spring‑loaded universal shellholder (four‑jaw clamp)
- Standard pilot set for common calibers (exact list varies by production run, typically including:
- .22 cal
- .24 / 6mm
- .25 cal
- .27 cal
- .28 / 7mm
- .30 cal
- .35 cal
- .44 cal
- .45 cal
- RCBS chamfer and deburring tool (handheld combo tool)
- Case neck brush(es) for common rifle calibers
- Hex key(s) / Allen wrenches for pilot and length stop adjustments
- Instruction manual / user guide
- Bench mounting holes in the base (some kits include mounting screws; others expect you to supply your own)
Not included but required or commonly needed for operation:
- Sturdy reloading bench or mounting board
- Bench mounting hardware (bolts, washers, nuts) if not supplied or if you prefer through‑bolting
- Calipers to verify case length during setup and checks
- Additional pilots for less common calibers (e.g., 6.5mm, 8mm) if not in the included set
- Sized, deprimed brass cases ready for trimming
- Eye protection and optionally a dust mask for brass chips
The Trim Pro-2 Kit is intended as a near turnkey trimming solution for common rifle cartridges. If you already own pilots and case prep tools, RCBS also sells the Trim Pro-2 trimmer body alone (MPN 90365) without the accessory kit.
Versions, Kits & Part Numbers
RCBS has produced several related Trim Pro models. The current manual Trim Pro-2 with universal shellholder is the focus here, but it helps to know the part numbers so you order the right version.
| Version | MPN | Included items | Notes |
|---|---|---|---|
| Trim Pro-2 Kit | 90366 | Trim Pro-2 manual trimmer with universal shellholder, pilot set, chamfer/deburr tool, brushes, hex keys, manual | Most popular option for new buyers; ready to trim common calibers out of the box. |
| Trim Pro-2 Manual Case Trimmer (trimmer only) | 90365 | Trimmer body with universal shellholder and cutter, usually 1 pilot | For reloaders who already own pilots and case prep tools. |
| Original Trim Pro Manual Case Trimmer | 90355 (older) | Older trimmer body using collet‑style case holder; often sold in its own kit | Discontinued but still seen used; not the same as Trim Pro-2. Uses different case holding system. |
| Powered Trim Pro variants | Various | Motor‑driven versions based on Trim Pro platform | Separate products; faster but more expensive than the manual Trim Pro-2 Kit. |
Buying tip: When shopping online, confirm that the listing clearly says “Trim Pro-2 Kit” and shows MPN 90366 if you want the full kit. Listings that only say “Trim Pro-2 Trimmer” or show MPN 90365 are the trimmer body without the accessory kit.
Build Quality & Design
The Trim Pro-2 Kit follows RCBS’ typical pattern: a heavy, no‑nonsense tool built more for longevity and function than for looks. The cast base and column provide a rigid platform, while the universal shellholder and pilot‑guided cutter handle a wide range of cartridges.
- Materials and construction:
- Cast metal base and body with RCBS green finish for stability and corrosion resistance.
- Steel cutter shaft and hardened steel cutter head for long service life.
- Steel universal shellholder jaws and springs for positive case grip.
- Hardened steel pilots sized to common bore diameters.
- Metal crank with a plastic knob for comfortable rotation.
- Rigidity and stability:
- Once bolted to a solid bench, the trimmer is very stable with minimal flex.
- The rigid column and guided cutter help maintain square cuts when the case is properly seated.
- Machining and finish quality:
- Machining on the shaft, pilots, and length stop is generally clean and functional.
- Some users note minor burrs or sharp edges from the factory; a quick deburr and cleaning usually resolves this.
- Finish is utilitarian rather than cosmetic; paint chips and wear marks are mostly cosmetic.
- Durability and wear points:
- Universal shellholder jaws and springs are the main moving parts; they can last for years with periodic cleaning.
- Cutter head is a consumable item that may need replacement after many thousands of cases.
- Length stop and pilot set screws can strip if over‑tightened with the wrong tool.
Overall, the design favors repeatability and robustness. The universal shellholder speeds caliber changes, but it can be a bit finicky with very small or very large cases if not kept clean and properly adjusted.
Setup & Adjustment
The Trim Pro-2 Kit requires a one‑time bench mounting and an initial trim length setup for each cartridge. Once dialed in, it can run large batches with minimal readjustment.
Bench and space requirements:
- A sturdy bench or mounting board with room for the trimmer, case bins, and chip clearance.
- Allow roughly 14 in of bench length and 6–8 in of depth for comfortable crank operation.
- Mount with 1/4″ or 5/16″ bolts, washers, and lock nuts or T‑nuts for rigidity.
Step‑by‑step initial setup:
- Mount the trimmer
- Position the trimmer so the crank has full clearance and you can feed cases comfortably.
- Mark and drill bench holes to match the base pattern.
- Bolt the trimmer down firmly; eliminate any wobble.
- Install the correct pilot
- Select the pilot that matches your caliber (e.g., .30 pilot for .308 Win).
- Insert the pilot into the cutter head and secure it with the supplied Allen screw.
- Set the case length stop
- Size and deprime a sample case, then insert it into the universal shellholder and clamp it.
- Slide the cutter assembly forward until the cutter just touches the case mouth.
- Trim a test case, measure with calipers, and adjust the length stop until you reach your desired trim‑to length.
- Lock the length stop firmly once the target length is achieved.
- Adjust the universal shellholder
- Operate the shellholder lever to open the jaws.
- Insert a case and close the jaws, ensuring the case head is fully seated and centered.
- For small or large cases, experiment slightly with insertion depth to get the most secure grip.
- Verify consistency
- Trim several test cases and measure each one.
- Fine‑tune the stop if needed until variation is within your acceptable range (often ±0.001–0.002″).
Typical first‑time mistakes:
- Not tightening the length stop enough, allowing trim length to drift over a long run.
- Using the wrong pilot size, causing binding in the neck or a sloppy fit.
- Failing to fully seat the case in the universal shellholder, which can cause angled cuts or chatter.
- Trimming unsized brass, which can give inconsistent neck tension and length readings.
- Mounting the trimmer on a flimsy bench, leading to vibration and poor feel.
Experienced reloaders recommend cleaning chips from the shellholder and pilot frequently, using a light oil on the cutter shaft for smooth operation, and keeping a notebook of trim‑to lengths and stop positions for your common cartridges.
Daily Use & Performance
In routine use, the Trim Pro-2 Kit is a straightforward manual trimmer: clamp the case, crank until you feel the cutter stop cutting, release, and repeat. It is not the fastest option on the market, but it offers solid consistency for typical reloading volumes.
- Handling and ergonomics:
- Horizontal crank is comfortable for seated operation at normal bench height.
- Case insertion and removal are quick once you get used to the universal shellholder lever.
- Adding a small bin for finished cases and a tray for brass chips helps workflow.
- Smoothness and feel:
- When clean and lightly oiled, the cutter rotation is generally smooth.
- Brass chips can cause a gritty feel if they build up around the jaws or cutter; periodic brushing fixes this.
- Speed and fatigue:
- Well suited for batches of a few hundred cases at a time.
- High‑volume users trimming thousands of cases in one sitting may find the manual crank tiring and may prefer a powered trimmer.
- Consistency and squareness:
- With the stop locked, users commonly see case length variation in the ±0.001–0.002″ range.
- Cuts are generally square when the case is fully seated and the pilot fits correctly.
- If the case is cocked in the jaws or the jaws are dirty, you may see slightly angled mouths.
- Performance by caliber type:
- Rifle brass: The trimmer excels with bottleneck rifle cases such as .223, .243, .270, .308, and .30‑06.
- Pistol brass: Straight‑wall pistol cases can be trimmed, but many pistol reloaders rarely need to trim; the tool works fine when required.
- Small cases: Very small cases like .223/5.56 can be a bit finicky in the universal shellholder and require careful clamping.
- Large magnums: Generally handled well, though extremely long or odd‑rimmed cases may be awkward.
Chip management is basic; brass shavings tend to scatter on the bench. Many users place a tray or mat under the trimmer to simplify cleanup.
Compatibility & Use Cases
The Trim Pro-2 Kit is a stand‑alone case trimmer that complements, but does not mount to, your press. It is most at home on a dedicated case prep bench where you can trim, chamfer, deburr, and brush necks in one station.
Operations it handles well:
- Trimming rifle brass to a consistent length before chamfer/deburr.
- Occasional trimming of straight‑wall pistol brass when needed.
- Multi‑caliber case prep for hobbyist and hunting loads.
- Moderate‑volume trimming where speed is less critical than uniformity.
Compatibility details:
- Pilots and cutter:
- Uses RCBS standard pilots; additional pilots are widely available individually.
- Cutter head and shaft are RCBS‑specific; not designed for generic threaded accessories.
- Shellholders:
- Trim Pro-2 Kit uses its own spring‑loaded universal shellholder and does not require press shellholders.
- Older Trim Pro models used collets and may require different parts; do not mix them.
- Case length range:
- Handles most common rifle and pistol case lengths up to long rifle cartridges like .30‑06 and .300 Win Mag.
- Extremely short or very long specialty cases may be outside its comfortable range; check RCBS documentation if you load unusual cartridges.
- Other brands and systems:
- RCBS pilots are standard; some users report cross‑compatibility with other brands’ pilots if the shank diameter matches, but this is not guaranteed.
- Does not integrate with press‑mounted trimmers such as Dillon RT1500 or Giraud; it is a separate bench tool.
Known incompatibilities and workarounds:
- Very small calibers (e.g., .17) can be challenging to hold securely; they may require special pilots and extra care.
- Odd‑rimmed or very short pistol cases may not seat ideally in the universal jaws; some users adjust insertion depth or use light shimming, but results vary.
- If you routinely trim thousands of cases of one caliber, a powered trimmer or press‑mounted system may be more efficient.
Maintenance
- Cleaning:
- After each session, brush or blow brass chips off the base, shellholder, and cutter area.
- Periodically disassemble the universal shellholder (per the manual) to remove chips and residue from the jaws and springs.
- Wipe exposed metal surfaces to prevent corrosion.
- Lubrication:
- Apply a light machine oil to the cutter shaft and moving joints for smooth operation.
- Avoid heavy grease that can trap chips and grit.
- Do not oil the case mouth or pilot contact surfaces excessively; a light film is enough.
- Inspection and adjustments:
- Check the length stop lock screw and pilot set screw regularly to ensure they remain tight.
- Inspect the cutter edge occasionally; replace the cutter head if trimming effort increases or case mouths become rough.
- Monitor shellholder springs and jaws for wear or loss of tension.
Replacement parts and support:
- RCBS offers replacement cutter heads, pilots, shellholder components, and hardware through their parts catalog.
- RCBS customer service has a strong reputation; many users report quick support and low‑ or no‑cost replacement of small parts under warranty.
Final Thoughts
The RCBS Trim Pro-2 Kit is a solid, traditional manual case trimmer aimed at reloaders who value consistency and durability more than raw speed. With its universal shellholder, included pilot set, and basic case prep tools, it covers most common rifle cartridges right out of the box. Once mounted and properly adjusted, it delivers repeatable trim lengths and square cuts suitable for hunting, target, and most precision work, provided you keep the shellholder clean and use the correct pilot.
Its main limitations are the manual crank (slow and tiring for very high volumes) and the universal shellholder’s sensitivity to very small or very large cases. High‑volume or single‑caliber shooters may eventually prefer a powered trimmer, but for many hobbyists the Trim Pro-2 Kit strikes a good balance of cost, capability, and longevity. For a broader comparison to competing trimmers and guidance on who should buy it, see the main review article. To understand how it holds up in real benches over time, including common complaints and praise, check the dedicated real‑world feedback article.
