Dillon 38/357 Caliber Conversion Kits | RL550 / RL450 Series

Dillon 38/357 Caliber Conversion Kits | RL550 / RL450 Series

Marsoni

M251S

$116.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Dillon 38/357 Caliber Conversion Kits | RL550 / RL450 SeriesDillon Precision caliber conversion kits allow you to adapt your machine from one caliber to another in minutes. They are a great way to maximize machine use when reloading multiple calibers. Caliber conversion kits vary by machine type, and include various parts for each machine to quickly change calibers. Please see the tabs below for specifics about each machine type.

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Your Dillon 38/357 Caliber Conversion Kits | RL550 / RL450 Series orders ship within 1-2 business days.

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Fast: 2-3 business days
Express: 1-2 business days

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
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These brackets are heavy duty and came with the correct hardware. They were easy to install, the two holes were so helpful to know where to mark them. I think because they’re heavy duty you can place a good amount of weight on your shelves. The only thing I wasn’t happy with is that 4/69 of shelves, the paint was chipping but it was the perfect gold color.

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Reviewed in the United States on February 14, 2026

Verified Purchase

Port

Pawtucket, US

★★★★★ 5

Really nice looking work great

Size: 4 Inch, Color: Black

Great looking

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Reviewed in the United States on May 8, 2026

Verified Purchase

Sharon

Lake Worth, US

★★★★★ 5

Don't hesitate - Great product!

Size: 12 Inch, Color: Black

Superior quality at an unbelievable savings over local retailers. Hardware for hanging included the cheaper plastic lags yet they also included the heavy duty lags, so no tapping in to our supply. Thank you for a great product

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Reviewed in the United States on December 13, 2025