Description
If you load belted magnums or big hunting cartridges, the RCBS Shell Holder #4 is the little piece that keeps everything lined up. It snaps into the ram of your single-stage or turret press, grips the case head, and holds the round square with the die every time you pull the handle. RCBS cuts these to the industry's tightest tolerances using quality steel, and they're heat-treated so one holder lasts through years of loading sessions.
The #4 captures 0.125 inch of the case head, which is the number that keeps your SAAMI headspacing on point. That snug, consistent grip is what gives you repeatable sizing without the slop that can creep in with worn or sloppy holders. It's a small detail that makes a real difference once you're chasing tight groups or working up a load for a long-range magnum.
What the RCBS #4 Shell Holder Fits
This is the long-action magnum holder, and it covers a lot of ground. Think .257, .270, .300, and .340 Weatherby Magnum, .264, .300, .338, and .458 Winchester Magnum, 7mm and .300 Remington Magnum, 7mm STW, .300 and .338 RCM, .300 and .375 H&H, .308 Norma Mag, .375 Ruger, .416 Ruger and Rem Mag, .450 Marlin, .458 Lott, and .460 S&W, among others. If your cartridge shares that belted or magnum-size case head, odds are the #4 is your holder.
Why Reloaders Keep the RCBS Shell Holder #4 Handy
It works with most modern reloading presses, not just RCBS gear, so it drops right into whatever setup you already run. The holder grips the shell securely enough that you won't fight headspace or sizing issues, and it's backed by RCBS warranty support. For anyone building a bench around magnum hunting rounds, this is one of those grab-and-go pieces worth having in the drawer.
Key Specifications
- Manufacturer: RCBS
- Manufacturer Part Number: 9204
- UPC: 076683092045
- Size: #4
- Caliber/Gauge: Multi-Caliber (Long Action Magnum)
- Material: Hardened Steel
- Finish: Silver
- Case Head Capture: 0.125 inch for proper SAAMI headspacing
- Press Compatibility: Single-Stage and Turret Presses
- Product Type: Shell Holder
- Style: Press Type
- Quantity: 1
- Weight: 4 oz
What’s Included
- RCBS Shell Holder #4 (1)
Frequently Asked Questions
What calibers does the RCBS Shell Holder #4 fit?
The #4 covers a broad range of belted and long-action magnums, including .257, .270, .300, and .340 Weatherby Magnum, .264, .300, .338, and .458 Winchester Magnum, 7mm and .300 Remington Magnum, 7mm STW, .300 and .375 H&H, .308 Norma Mag, .375 and .416 Ruger, .450 Marlin, .458 Lott, and .460 S&W. If your cartridge shares that magnum case head, it's very likely a match. When in doubt, check your specific cartridge against an RCBS shell holder chart before ordering.
Will the RCBS #4 shell holder work in my press?
Yes. RCBS shell holders are designed for single-stage and turret presses and are compatible with most modern reloading presses, not just RCBS equipment. It slides into the ram and locks in place like any standard shell holder.
Why does the 0.125 inch case head capture matter?
That measurement is how the holder positions the case against the die to maintain correct SAAMI headspacing. Consistent capture means your sizing and headspace stay repeatable from round to round. It's a big part of why your reloads chamber properly and shoot consistently.
Is the RCBS Shell Holder #4 built to last?
It's machined from hardened, heat-treated steel to tight tolerances, so it holds up through years of regular use. The steel construction keeps the grip tight and resists wear, which helps you avoid headspace and sizing problems down the road. RCBS also backs it with warranty support.




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