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Posted: 10/18/2016 1:03:35 PM EDT
I use an RCBS Uniflow powder measure and Bullseye feeds horribly.
Can't even cycle the arm.

Joe O
Link Posted: 10/18/2016 1:59:12 PM EDT
Link Posted: 10/18/2016 2:28:16 PM EDT
Do you have the small bore cylinder?   The large one does not do well with small charges of shotgun/pistol flake powder. It's just too big in diameter and too shallow (with a lite charge) to cut cleanly and accurately.

Mine does fine with the small bore cylinder.

Link Posted: 10/18/2016 3:18:09 PM EDT
Bullseye should meter well. It's great in all my measures. Tune or polish.
Link Posted: 10/18/2016 5:28:50 PM EDT
I guess I have a large type. I figured bullseye would work because it looks similar to 231 and WSF
and they meter great. Funny thing also, Unique meters pretty good.
Link Posted: 10/18/2016 5:36:02 PM EDT
Link Posted: 10/18/2016 6:25:37 PM EDT
If you are throwing handgun charges (with a fast powder like Bullseye you would almost have to be), like the guy said, you need the small cylinder.

I bought a baffle to go with my Uniflow and it made a difference in consistency.   Yes to practicing a consistent technique, and tapping the measure to settle the powder periodically.
Link Posted: 10/18/2016 6:32:05 PM EDT
I never had any luck throwing Bullseye or Unique when charges were in the single digits with the large cylinder.

I'm typically throwing between 4 and 7 grains. My Uniflow came with both cylinders so I never messed with trying to get the large to do better.

If you can buy the small cylinder. Mine is in my Uniflow over 90% of the time. The small cylinder will do up to .308 Win and a little larger capacity casings.

Link Posted: 10/18/2016 6:53:16 PM EDT
Old school Lyman. I think it's the #55

Yup checked it on Midway- Yikes $89 . It's been a long time since I bought mine . Still works well but truthfully most all my handgun loads are done on my Dillon Square deal which also works quite well
Link Posted: 10/18/2016 8:55:56 PM EDT
RCBS Uniflow works great and as does my Dillon powder measure.
Link Posted: 10/18/2016 9:33:58 PM EDT
Link Posted: 10/18/2016 9:38:32 PM EDT
Link Posted: 10/18/2016 10:18:15 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Bullseye should meter well. It's great in all my measures. Tune or polish.
View Quote

This right here.  I use it in a Hornady and Dillon and it's +/- 0.1 gr.
Link Posted: 10/18/2016 11:10:28 PM EDT
Didn't know there was a large and a small when I purchased mine.
Midway lists them both. Looks like I need another measure for light loads.
Link Posted: 10/19/2016 9:17:05 AM EDT

Discussion ForumsJump to Quoted PostQuote History

Didn't know there was a large and a small when I purchased mine.

Midway lists them both. Looks like I need another measure for light loads.

View Quote

You don't have to get a whole new powder measure. You can just get the small metering drum. I recently did the same. Years and years ago I bought a used Uniflow off eBay. Recently tried a new powder and was getting very inconsistent throws. Found out mine had the large metering drum. Bought the small drum and all is good now.
Link Posted: 10/19/2016 11:06:43 AM EDT
Gotta have the small/pistol rotor. Somewhere around 3.0gr my large rotor Uniflo must be mostly flush it will hit and bind, does fair but not great above that.

Hornady with small rotor works very good, Uniflo should be almost identical.

Lee Auto-Disc served well, if the cavity matched what I wanted to drop.
Link Posted: 10/19/2016 11:17:21 AM EDT
Just ordered the small drum. Thanks everyone.
Link Posted: 10/19/2016 12:32:18 PM EDT
I have two Uniflows.
One large drum, one mall drum.

Each with the matching size micrometer head.

Changing the drum ruins the zero of the micrometer head.

I prefer to be able to dial a load back up without futzing around.
Find the load in the log book, double check it in data books.
Set the micrometer.

Toss a few and check each.
Then toss 10 loads a couple times and check the ten.
All you have to do is move the decimal point.

Write the setting down in the load log again.

You can make very serviceable baffles from any aluminum beverage can.

Patterns are out there for the looking.
Link Posted: 10/19/2016 4:52:26 PM EDT
Bullseye works great through my uniflow. I have 2 rotors, I use the small one for pistol powders.
Link Posted: 10/21/2016 11:16:09 PM EDT
I use the Lee Auto powder measure.  I custom cut the cavities for s given charge. I've probably loaded 200,000 rounds of 45ACP and 38 Specials in the past 40 plus years.  Every time I check the weights they are dead on.

Link Posted: 10/22/2016 10:33:30 AM EDT
While you've at it it doesn't hurt to have a couple different sized powder baffles for your rcbs. A link to a download that has templates for all the popular powder throws like rcbs & hornady, dillon, etc.

I make mine out of nothing more than al roof flashing.
Link Posted: 10/22/2016 12:33:37 PM EDT
These days all my Bullseye goes through the Dillon 550 measure with the small charge bar, excellent metering.   Back when I did use the Uniflow, I used the small charge cylinder, worked ok.
Link Posted: 10/22/2016 12:42:13 PM EDT
Meters great through my LNL, most consistent powder I use.
Link Posted: 10/22/2016 1:12:46 PM EDT
Lee Dipper (0.5cc) and Hornady LNL Powder Measure (using the pistol rotor/metering insert). No issues.
Link Posted: 10/22/2016 3:18:21 PM EDT
24+ years using the RCBS large drum. Never an issue with Bullseye or Unique. I did put the baffle inside the powder hopper which helps.
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