Overview – What It Is
The RCBS Cowboy Die Set is a specialized carbide three-die setup designed for reloading straight-walled cartridges used in cowboy action shooting with precision and reliability. It handles classic calibers like 45 Colt, 38 Special/357 Magnum, and 44-40 Winchester, featuring full-length sizing, expanding, and roll crimp seating in an efficient package. Ideal for cowboy action enthusiasts loading lead bullet ammo for period firearms or competitions, this set emphasizes smooth operation optimized for cast bullets without lubrication needs.
What’s in the Box
Typical contents (may vary by batch/region):
- Carbide full-length sizing and decapping die.
- Expander die optimized for lead bullets.
- Seater die with roll crimp.
- Brass lock rings for each die.
- Printed instructions and load data.
Usually not included: shell holder, case gauge, bullet puller, or additional caliber-specific accessories.
Materials & Build
- Body – hardened steel construction for longevity.
- Sizing Ring – carbide insert for smooth resizing without scratches.
- Seating Stem – adjustable steel stem for versatile bullet shapes.
- Expander – design allows optimum belling for cast bullets.
- Finish – polished surfaces resist corrosion and buildup.
The build prioritizes precision for lead ammo, with tight tolerances ensuring consistent operation. This makes it a reliable choice over standard dies, offering durability for frequent use in cowboy action reloading.
Key Specs & Compatibility
- Die threads: standard 7/8″-14, compatible with most presses.
- Caliber options: suited for cowboy calibers like .45 Colt, .38 Special/.357 Magnum, .44-40 Winchester.
- Features: carbide sizing for lube-free use; roll crimp for secure bullets; adjustable for OAL.
- Lubrication: none needed thanks to carbide ring.
- Lock system: brass lock rings for secure adjustments.
Warranty & Origin
Manufacturer: RCBS (USA). Components are machined in the U.S. with quality materials. Warranty is a lifetime guarantee against defects; contact RCBS with proof of purchase for support.
Where the Cowboy Die Set Excels – Use Cases
- Cowboy action loading – great for 45 Colt or 38 Special lead bullet ammo in revolvers.
- Lead bullet setups – expander flares ideally for cast projectiles.
- Period firearms – 44-40 Winchester: roll crimp ensures reliable feeding.
- Competition loads – consistent crimping for accuracy in matches.
- Brass restoration – carbide sizing returns cases to spec with minimal effort.
Setup & Mounting – Do It Once, Do It Right
- Press compatibility: install in any 7/8″-14 station; works on single-stage or progressive.
- Sizing die: set to touch shell holder plus 1/8 turn; no lube on cases.
- Expanding die: adjust for slight bell to accept bullets without shaving.
- Seating die: set for desired OAL; crimp separately if needed.
- Lock rings: tighten securely; mark for quick resets.
- Testing: cycle dummy rounds and check with calipers or gauge.
Real-World Notes
- Carbide ring prevents sticking, prolonging brass life in cowboy calibers.
- Optimized for lead bullets, improving accuracy in period guns.
- Users praise consistent belling and seating once set.
- Brass lock rings hold adjustments well.
- Holds up to thousands of rounds with little wear.
Competitors – Quick Context
| Model | Advantages vs. Cowboy Die Set | Trade-offs vs. Cowboy Die Set |
|---|---|---|
| Hornady Custom Pistol Die Set | Titanium nitride for extra smoothness; in-line seating | Higher cost; less optimized for lead |
| Lee Pistol Die Set | Lower cost; factory crimp option | Basic adjustments; may require lube |
| Redding Deluxe Pistol Die Set | Match-grade tolerances; micrometer options | Significantly pricier; overkill for cowboy |
| Dillon Pistol Die Set | Progressive-optimized; fast production | Brand-specific; less for single-stage |
Pros & Cons
Pros
- Carbide quality with no lube needed.
- Optimized for lead bullets and roll crimp.
- Brass lock rings for secure setup.
- Lifetime warranty support.
- Versatile for cowboy calibers.
Cons
- Basic adjustments without micrometers.
- No shell holder included.
- Crimp may need practice for perfection.
- Limited to straight-walled cowboy calibers.
What to Buy with It (Day-One Kit)
- Shell holder for your caliber.
- Case length gauge.
- Bullet puller for fixes.
- Calipers for OAL checks.
- Powder measure and scale.
- Case lube for non-carbide mixes.
- Headspace checker.
FAQ
- Does it require case lube? – No, carbide handles it cleanly.
- Works for multiple calibers? – Caliber-specific, but sets available for many cowboy rounds.
- Is the crimp roll or taper? – Roll crimp in most sets; check for caliber.
- Fits progressive presses? – Yes, especially with expander.
- How durable? – Lifetime warranty; built for heavy use.
Who Should Buy It
- Cowboy action shooters needing lead-optimized dies.
- Reloaders for period firearms and revolvers.
- Enthusiasts loading classic calibers.
- Users of RCBS presses for integration.
- Value hunters seeking specialized features.
Bottom Line
The RCBS Cowboy Die Set offers specialized, dependable performance for cowboy action reloading in calibers like 45 Colt and 38 Special. With carbide construction, roll crimp, and features optimized for lead bullets, it delivers consistent results for competitions and period guns. If you seek tools tailored for cowboy shooting without extras, this set is a practical, reliable option.
