Help, My RCBS Uniflow won't throw a small enough charge!!

PKN · December 31, 2000, 11:35 AM

I just started using AA#2 because it will allow me to standardize powder across three calibers(9x19, 40 S&W, 45 acp). The problem is, my RCBS uniflow powder measure, which worked so well for Clays and Universal, will not throw a low enough chare for the 9 with #2! Can anyone here help me with the solution? Thanks

jsn · December 31, 2000, 05:18 PM

PKN my OLD(20 years maybe more) uniflow came with two sets inserts(powder chambers)and metering rods,one is large for large case volume rifle drops and the other is small for pistol and rifle drops,I haven't used AA#2 but I have made drops as small as 3.0gr of win231 using the small insert and stem.I leave in the small insert and can dump everything I load from 9mm to 45/70 but I do need the large for my belted mag's.maybe you just need to change out your insert and stem for the small one.

the large is .680 inside dia
the small is about half that .300 or so,I don't feel like taking apart my uniflow right now but if you need a measurement let me know.

Southla1 · December 31, 2000, 08:31 PM

My uniflow is about 38 years old and when I bought it the ONLY insert that it had was the small one. With that one I was able to throw as little as 2 grains of bullseye. A little hint I finally found a large insert and the screw for it on E-bay for about 10 bucks so now I am also set up as jsn is to pitch the exact charges needed for belted magnums.

PKN · December 31, 2000, 10:39 PM

Thanks, I got it though. Something was off in the dial, rezeroed it and I'm all set.

December 31, 2000, 11:35 AM	#1
PKN Senior Member Join Date: May 13, 2000 Location: VA Posts: 132	I just started using AA#2 because it will allow me to standardize powder across three calibers(9x19, 40 S&W, 45 acp). The problem is, my RCBS uniflow powder measure, which worked so well for Clays and Universal, will not throw a low enough chare for the 9 with #2! Can anyone here help me with the solution? Thanks

December 31, 2000, 05:18 PM	#2
jsn Member Join Date: November 23, 2000 Posts: 26	RCBS uniflow PKN my OLD(20 years maybe more) uniflow came with two sets inserts(powder chambers)and metering rods,one is large for large case volume rifle drops and the other is small for pistol and rifle drops,I haven't used AA#2 but I have made drops as small as 3.0gr of win231 using the small insert and stem.I leave in the small insert and can dump everything I load from 9mm to 45/70 but I do need the large for my belted mag's.maybe you just need to change out your insert and stem for the small one. the large is .680 inside dia the small is about half that .300 or so,I don't feel like taking apart my uniflow right now but if you need a measurement let me know.

December 31, 2000, 08:31 PM	#3
Southla1 Member In Memoriam Join Date: March 19, 2000 Location: Jeanerette, La. Near the Posts: 1,999	My uniflow is about 38 years old and when I bought it the ONLY insert that it had was the small one. With that one I was able to throw as little as 2 grains of bullseye. A little hint I finally found a large insert and the screw for it on E-bay for about 10 bucks so now I am also set up as jsn is to pitch the exact charges needed for belted magnums.

December 31, 2000, 10:39 PM	#4
PKN Senior Member Join Date: May 13, 2000 Location: VA Posts: 132	Thanks, I got it though. Something was off in the dial, rezeroed it and I'm all set.