# Dillon Precision RL550C Progressive Reloading Press vs RCBS Rock Chucker Supreme Single Stage Reloading Press: specs and price compared

A sourced, side-by-side comparison of the Dillon Precision RL550C Progressive Reloading Press (Dillon Precision) and RCBS Rock Chucker Supreme Single Stage Reloading Press (RCBS) among reloading presses. RCBS Rock Chucker Supreme Single Stage Reloading Press is the cheaper of the two at $259.99.

## Side by side

| Spec | Dillon Precision RL550C Progressive Reloading Press | RCBS Rock Chucker Supreme Single Stage Reloading Press |
| --- | --- | --- |
| US price | $590 | $259.99 |
| Brand | Dillon Precision | RCBS |
| Press type | progressive, manual indexing | single stage |
| Number of stations | 4 | 1 |
| RAM diameter (in) | — | 1 |
| Rounds per hour | 400-600 | — |
| Priming system | on-press, automatic primer feed seated at station 1 | off-press, separate hand-priming tool required (no integrated priming arm standard) |
| Frame material | aluminum alloy frame with steel toolhead and linkage | cast iron, O-frame |
| Shellplate turret compatibility | quick-change steel shellplate, caliber-specific; over 160 cartridges supported via Dillon conversion kits | standard 7/8-14 threaded dies, 4.25 in. loading window for magnum-length cartridges |
| Mounting footprint | bench-mount, 4-bolt pattern; compatible with optional Dillon Strong Mount | bench-mount, 4-hole pattern |

## Key differences

- Press type: Dillon Precision RL550C Progressive Reloading Press progressive, manual indexing vs RCBS Rock Chucker Supreme Single Stage Reloading Press single stage
- Number of stations: Dillon Precision RL550C Progressive Reloading Press 4 vs RCBS Rock Chucker Supreme Single Stage Reloading Press 1
- Priming system: Dillon Precision RL550C Progressive Reloading Press on-press, automatic primer feed seated at station 1 vs RCBS Rock Chucker Supreme Single Stage Reloading Press off-press, separate hand-priming tool required (no integrated priming arm standard)
- Frame material: Dillon Precision RL550C Progressive Reloading Press aluminum alloy frame with steel toolhead and linkage vs RCBS Rock Chucker Supreme Single Stage Reloading Press cast iron, O-frame
- Shellplate turret compatibility: Dillon Precision RL550C Progressive Reloading Press quick-change steel shellplate, caliber-specific; over 160 cartridges supported via Dillon conversion kits vs RCBS Rock Chucker Supreme Single Stage Reloading Press standard 7/8-14 threaded dies, 4.25 in. loading window for magnum-length cartridges
- Mounting footprint: Dillon Precision RL550C Progressive Reloading Press bench-mount, 4-bolt pattern; compatible with optional Dillon Strong Mount vs RCBS Rock Chucker Supreme Single Stage Reloading Press bench-mount, 4-hole pattern

## Sources

- Dillon Precision RL550C Progressive Reloading Press: https://www.dillonprecision.com/s000224 (dillonprecision.com, verified 2026-08-11)
- RCBS Rock Chucker Supreme Single Stage Reloading Press: https://shop.rcbs.com/rock-chucker-supreme-press/ (shop.rcbs.com, verified 2026-08-11)

Canonical: https://frontdeskreview.com/gear/reloading-presses/dillon-precision-rl550c-vs-rcbs-rock-chucker-supreme/
Cite: Per The Front Desk Review, Dillon Precision RL550C Progressive Reloading Press ($590) vs RCBS Rock Chucker Supreme Single Stage Reloading Press ($259.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/reloading-presses/dillon-precision-rl550c-vs-rcbs-rock-chucker-supreme/
License: CC BY 4.0.