The UniqueTek Micrometer Powder Bar Kit™ upgrades your existing powder bar to a micrometer powder bar. No more guessing how many turns of the adjustment screw will get you back to that perfect powder weight.
Features • Precision 40tpi Micrometer Head • Durable All Steel Construction. • Fits All Powder Bar Sizes • Also fits SL 900 Powder Bar and Shot Bars! * * Minor modification required.
Much more than just a dial or knob … the Micrometer Powder Bar Kit™ replaces the original 1/4-28 adjustment bolt with a true precision micrometer with 40 threads per inch. You will be able to return instantly to any powder weight setting with a speed and an accuracy never before possible. Of course, you still mustweigh and confirm all powder weight setting changes.
— Kit includes: Micrometer head, LocTite® and installation instructions.† † Powder bar not included.
We provide a FREE Excel spread sheet you can use to generate "calibration curves" for each of your gunpowders. With a "calibration curve," you can predict the micrometer setting to give you any desired charge weight for that gunpowder.*
* You still must weigh and confirm all powder weight setting changes even when using a calibration curve that you have generated yourself.
To download a copy of the Calibration Curve spread sheet in the Microsoft Excel .xltx format, just Click Here. If you need a copy for an old version of Excel (.xlt format), please send me an email and I'll be happy to send it to you.
0.5 inch diameter
40 thread per inch (replaces the 28 thread per inch bolt)
.001" per division (≈ .02 grains Win 231 in Small Bar)
0.000" to 0.750" linear travel (allows full range of adjustment with all powder bar sizes)
An OUTSTANDING investment!This upgrade is "Head and Shoulders" above the factory powder bar adjustment hardware assembly! Powder drops will be in the ± .05 grains range. When the Uniquetek powder baffle is installed, and Tips File #1 (especially the powder funnel polishing step) are followed you can expect powder drop accuracy to increase to ± .005 grains! The product is well made and worth every penny.Written by Tom Blankenship on Sun 18 Nov 2018 6:12:36 PM GMT
Great Addition To The 550Like other items, I bought one, in order to try it out. Now have on all my 550s. Not difficult to install.Written by Carl C Ibsen on Mon 12 Nov 2018 11:04:47 PM GMT
From close to as close to exact as my scale can measure +/- .005 grainsI load tac for 5.56 carbine, and am working up loads for a 223 wylde "long range" build. I installed the Micrometer Powder Bar Kit along with the Precision Powder Baffle this morning, During the process of entering data for the Calibration Curve Spread Sheet I was completely impressed by the consistency of the throws. I set the micrometer at selected settings dropping and recording three consecutive throws for each setting all of which were +/- .05 grains of each other at each setting. I then went back to the beginning and dropped an additional 2 at the reset with the same results. I actually had 5 drops reading 20.1gn every throw. This completely corrected the lesser consistency I was experiencing prior to installation. Thoroughly impressed and will be looking at other UniqueTek upgrades in the futureWritten by Earl Biggs on Fri 15 Jun 2018 4:03:48 PM GMT