I bought one with the large cylinder in order to load my 45/70. I now want to load my .25 ACP.

I understand that there is a cylinder/metering screw kit available to make these 1.5 grain() throws.

Has anyone bought this conversion? Is it dependable and accurate or should I just cut down a .22 case, solder on a handle, and make a little dipper?

Thanks in advance.

~ Alan

My original Uniflow had the large cylinder in it and I fought with a number of powders, Unique, Bullseye and Clays. I ordered the smaller cylinder directly from RCBS the best I remember. It was $33 or maybe a touch more or less. This was within the last 3 or 4 months. I fought with this for over a year before I got wise.
Now I am measuring Clays at 2.7 gr. without any problems. Get one, it will make your life a lot easier and will enjoy loading those lighter loads.
Forget about making a dipper. Gave that a try and it just didn't work.

What photobiker said. I had the same problem when loading .38 S&W with W231. I bought a entire Uniflow measure with both metering assemblies from a Forum member and problem is solved. It works great when loading .380 auto too. If you want a dipper, LEE makes a good set.

De Oppresso Liber

When I bought my RCBS uniflo powder measure in 1980 it came with both the large and small cylinders in the box. I guess later they only came with one cylinder.

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James
On the Llano Estacado

I ordered a small cylinder after fighting with the big one for a few months as well, and it is great for pistol loads, and even small rifle cartridges like .223.

It is worth your while.

My uniflow came with both lg & small cylinders back about 1983. Great for rifle loading but I bought an RCBS Little Dandy measure years ago for loading handgun cartridges. It uses non-adjustable rotors so you might need to buy a few (at about $10 a whack), but it's a lot handier than the Uniflow.
Looks like a good 25acp load would be 1.5 gr W231 behind a 50 gr bullet- this is less than even the #01 rotor so maybe the Little Dandy wouldn't be the best choice for smething as miniscule as the 25 acp. But I would sure reommend it for the average handgun cartridge.

Thanks, fellas. It's definitely my next purchase.

Making a dipper is cheaper. I have an old Ohaus powder measure that has small and large chambers on the same cylinder.

I inherited my Dad's reloading stuff, of that a Uniflow with the large cylinder. I bought the UPM for it, then I got into reloading for .45acp and bought a second uniflow from ebay and bought a UPM for a small cylinder and have both and don't have to remove one to put in other. The uniflow on ebay was 30+shipping if memory serves.a

Works great and I can write down the number on the UPM to get it back in the ball park!

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2nd Amendment!

In addition to the small Uniflow rotor I suggest installing a baffle inside the powder hopper.
Available from RCBS but simple enough to
make out of sheet metal.
Good Luck, Kevin