Creedmoor Sports TRX-925 Precision Reloading Scale Review

Creedmoor Sports TRX-925 Precision Reloading Scale Review - https://www.creedmoorsports.com/product/creedmoor-reloading-scale-trx-925-precision/creedmoor

Scale came with three F1 class calibration weights (2 gram, 10 g, 50 g) that are used for calibration of the scale. Ohaus ASTM Class 6 check weights from 500 mg (7.716 grain) down to 1 mg (0.0154 grain) were tested along with trickling of W231/HP-38 and Promo to push the limits of detection/sensitivity of the scale.

Details and specifications:

• 925 Grain Weighing Capacity
• Creedmoor’s Gold Anodized Static Free Powder Pan
• Easy to Read Backlit LCD Screen
• Customizable Draft Shield

Unboxing - Scale arrived well packaged (box within a box) with packing air pillows



Draft shield comprised of 4 vertical plastic pieces and a top that could be "customized" by using 3 panels to allow for powder trickler use.



Assembled draft shield and three F1 class weights in individual cases along with powder pan



Close up of backlit display shows "-" negative weight and beneath digital bubble motion/"working" indicator ("Precision" printing shows ".01 Grams" but it should be ".001 Grams")

 

Scale construction - Check weights were verified before and after disassembly of scale.

Unlike my "analytical/lab" scale which has a small plate where load cell/strain gauge was mounted to which affected zero drift from mount screw tension/scale warm up, Creedmoor Sports TRX-925's mounting plate is the ENTIRE base of heavy gauge metal that eliminates the problem of mount screw tension affecting zero drift.

Also printed circuit board is mounted to the top and does not seem to apply thermal expansion/torsional pressure on the base plate as demonstrated by no reading change when each corner over four base feet was pushed down or during initial warm up as identified in the myth busting thread - https://www.thehighroad.org/index.p...-scale-zero-drift-and-can-it-be-fixed.893402/




Like my "analytical/lab" scale that changed display reading from magnetic source like smartphone/magnetic tip screw driver, TRX-925 was also sensitive and reading changed from zero to 0.15 gr when my cellphone was near by.

 

Check weight verification and powder trickling down to limits of scale sensitivity/detection - Scale was calibrated by pushing and holding the "CAL" button until "2.000 g" display flashed. After 2 gram calibration weight was placed and removed, "10.000 g" display flashed and 10 gram calibration weight was placed and removed. Then "50.000 g" display flashed and 50 gram calibration weight was placed and removed.

(NOTE: Check weights were verified with top draft cover on and off and I found calibrating with top draft cover off improved display/weight measurement consistency)

Following are measurements of check weights with top draft cover off:

• 2 gram F1 weight - 2.000 g
• 10 gram F1 weight - 10.000 g
• 50 gram F1 weight - 50.000 g
• 500 milligram weight - 0.500 g / 7.72 gr (Should be 7.716 grain)
• 200 milligram weight - 0.200 g / 3.09 gr (Should be 3.086 grain)
• 100 milligram weight - 0.100 g / 1.55 gr (Should be 1.543 grain)
• 50 milligram weight - 0.050 g / 0.78 gr (Should be 0.771 grain)
• 20 milligram weight - 0.020 g / 0.31 gr (Should be 0.308 grain)
• 10 milligram weight - 0.010 g / 0.15 gr with flash to 0.16 gr (Should be 0.154 grain)
• 5 milligram weight - 0.005 g / 0.08 gr (Should be 0.077 grain)
• 3 milligram weight (2+1 mg) - 0.003 g / 0.06 gr (Should be 0.046 grain)
• 2 milligram weight - 0.000 g / 0.00 gr (Should be 0.030 grain)
• 1 milligram weight - 0.000 g / 0.00 gr (Should be 0.015 grain)

I even tried weighing 2 mg weight inside the powder pan but no reading. So looks like lowest detection/sensitivity of this scale is 3 mg/0.06 gr.

Powder trickling - Powders W231/HP-38 and Promo were trickled into powder pan and scale had no problem quickly displaying additional granules of powders with 0.01 grain incremental reading.



Next I pushed the sensitivity/detection limits by trickling minimal number of granules (Picture taken of actual powders used for the test):

• Promo - Working down from 50 granules, 7 granules poured from copy paper into powder pan registered 0.003 g / 0.06 gr. Anything less, reading was 0.000 g/0.00 gr. ("Reblended" Promo granules are more rounder to meter better and C-H 502/Redding/PAD are metering latest lot Promo comparable to W231/HP-38 with .12 gr variance)

• W231/HP-38 - Working down from 30 granules, 18 granules poured from copy paper into powder pan registered 0.003 g / 0.06 gr. I tried to use mostly larger flattened ball granules since W231/HP-38 granule size is irregular.

Summary - During the check weight measuring and powder trickling, scale was calibrated with the top draft cover off and it retained zero without drifting. Once minimally detected 3 mg / 0.06 gr granules of powder, pouring granules out of pan and back again repeated 3 mg / 0.06 gr weight reading consistently several times.

UPDATE: Resolving Promo down to one/two granules to produce 0.01 gr increase on post #8 - https://www.thehighroad.org/index.p...-reloading-scale-review.904159/#post-12262497

 

Excited to hear more.

 

With the no readings, try it away from zero. 5, 10, 20, 30gr. The reason to check is that it may be a dead zone for zero drift.

 

Why I tried with the powder pan instead of just using the platform.

 

What does the scale read when you place one kernel in the pan ?

 

I just turned on the scale and it automatically went into calibration mode (Which is normal according to Creedmoor Sports Q&A section). After the calibration was done with top draft cover off, powder pan was weighed to be 8.467 grams (130.68 grain).

House temperature is 64F and following was performed without any warm up of the scale.

• When 7 larger granules of Promo were placed in the pan, 0.003 g / 0.06 gr reading was displayed.
• I poured out 7 granules and reweighed several times getting the same 3 mg/0.06 gr reading.
• When one to two additional granules of Promo was added to 7 granules, reading changed to 0.004 g / 0.07 gr. (One to two granules likely indicates what size 7 granules were in the pan to push the reading up to next mg/gr)
• I returned 7 granules back to the pan and reading dropped to 0.003 g / 0.06 gr.
• Adding additional one to two granules increased the reading to 0.004 g / 0.07 gr.

This is significant as Promo granules are smaller/lighter than Varget kernels I used to resolve my "analytical/lab" scale.

(NOTE: One thing I noticed which I forgot to add to OP was that scale has two speeds of weight measurement. Holding down the "TARE" button changes from Speed 1 and Speed 2. When measuring really small weights down around several mg or granules, slower "Speed 1" seems to produce more sensitive readings.)



When I resolved Varget down to single kernel with my "analytical/lab" scale, lowest detection/sensitivity I was able to achieve was 0.004 g (0.08 gr - Should be 0.06 gr). And depending on kernel size/length/cut angle, readings ranged from 0.004 g to 0.006 g (0.08 gr to 0.12 gr) for 4 kernels with most of readings at 0.005 g (0.10 gr). This translates to single Varget kernel weighing between 0.02 gr to 0.03 gr.

Creedmoor Sports scale is able to resolve Promo down to one/two granules to indicate 1 mg/0.01 gr increase.

 

Thanks for the review. For those of us that have/had the gempro 250, if and when that dies, I’m looking for the next digital scale I can trust. This TRX-925 is a bit more at 350$ but may be worth it.

 

Unfortunately the prices aren’t going down , the next step up is probably the a&d fx120i milligram at $550

 

Shooting Sports USA recently reviewed Creedmoor Sports TRX-925 scale and identified similar findings which is nice confirmation - https://www.ssusa.org/content/creedmoor-sports-affordable-new-trx-925-precision-reloading-scale/

• TRX-925 requires no warm-up
• Measuring to one-hundredth of a grain (0.01 grain)
• A minimum weight of only 0.06 grains will trigger the TRX-925
• 0.06 grains ... that’s the weight of seven kernels of IMR-4064.

 

UPDATE: With on and off rain (We do get 80-100" of annual rain here) with weather forecast of eight more days of rain, not much chance for my next project of .223 69/75 gr BTHP load development at 100-300 yards and maybe 600-800 yards. (Even thought about visiting my sister's family who moved to Texas late last year as it will be mostly sunny for next 2 weeks but it will be 2 weeks of driving and around $1000 for fuel at $4/gallon + food/lodging and I could almost buy Savage 110 Precision Rifle with that. )

So I returned my focus back on the Creedmoor Sports scale and checked few things out.

Turns out glass stove top I used was level left to right but had slight incline front to back. So I found a spot on the breakfast counter that was more level to repeat the lower check weight verification.

• Scale was calibrated with top draft cover off and all check weight verification were done with cover off.
• As before, lightest check weight that scale would detect was 0.003 gram (3 mg that should weigh 0.046 gr) but instead of 0.06 gr, it now displayed 0.05 gr.
• Removing 3 mg check weights on and off returned display to zero and back to 3 mg repeatedly.
• Placing 5 mg check weight and then adding 2 mg/1 mg check weights separately increased readings from 0.08 gr to 0.11 gr and 0.08 gr to 0.09 gr demonstrating scale is able to detect addition of 1 mg to 2 mg weights once minimal weight detection of 3 mg is achieved.
• Moving the scale to less level spot produced 0.003 gram (3 mg) reading that produced 0.06 grain reading.

So if you are planning to get the Creedmoor Sports scale, consider the following for more accurate measurements/readings:

• Remove all sources of magnetic field including cell phones, magnetic screwdrivers, etc. away from the scale
• Find a level spot using a bubble level
• Change speed of weighing setting to slower "Speed 1" by holding down the "TARE" button
• Calibrate scale with draft cover off and weigh with draft cover off also

 

I don't know where your sister lives here in Texas but where I'm at, we have been getting rain 2-3 times a week.

Good review of the TRX-925 scale. It may need to be leveled using a machinist level, 0.0002"/10". Might be easier to set it on an adjustable base. I made a simple one for my old RCBS DS750, 3 point.

 

I was hoping rain would stop after several days it would take me to drive to Texas.

Yes, it would be a good idea to have a level mount for scale use to maximize/optimize the accuracy of the scale. I do have a machinist level but used couple of construction bubble levels for the breakfast counter.

 

Repost from another thread - https://www.thehighroad.org/index.p...-and-analog-scale.905003/page-2#post-12285290

Yes, there is enough room around the platform to place the trickler towards the back and still access the powder pan with the draft shield up.

And likely TRX-925 has auto-zero feature as if you start trickling after zero/tare, addition of few granules/flakes of powder won't change reading but as soon as you start with higher than zero reading (I started with 0.05 gr), scale will detect addition of granules/flakes to increase reading by 0.01 gr. Reading of trickled powder is fast, not quite instantaneous but fast.

 

Impressive, but as someone who can "mess up a soup sandwich" I'll stick with a balance beam scale.