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RL450 to RL550

Folks was just given an older 1978 RL450 with the eject sprocket and all else is stock. Should I convert frame and all to a 550 or just add the automatic powder drop along with primer warning set. I shoot Cowboy action and only load 500 to 1000 rounds of 45 Colt and 38 Special. Thank you for your advice. Maybe a Roller Handle?

As far as increasing speed goes, adding the automatic primer feed first, then the automatic powder measure will help the most.  The frame change reduces caliber conversion time only.

Add a SDB to the fleet to take care of your pistol reloading needs. Speaking from experience as I own both.

I just came into a 450B too. I didn't realize I could substitute new 550 parts on it, like you suggest with the automatic primer and powder drop. Are you sure these will retrofit?

I know I'm late here, but yes the 550 parts worked great on my old 450. I didn't upgrade the frame because I don't really mind the dye change. It doesn't take very much time to do and I like the idea of having a solid frame for my dyes so there is no chance of extra wear or movement of a tool head.

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