MacDonald AutoTrickler V4 with A&D FX-123i Scale

MacDonald AutoTrickler V4 with A&D FX-123i Scale

The MacDonald AutoTrickler V4 is an automatic powder dispenser that doses powder onto a lab-quality balance, so you reach your target charge weight quickly and repeatably. This kit includes the A&D FX-123i force restoration scale it is designed around.

Since the original AutoTrickler was invented in 2016, it has become the go-to tool for long range shooters who need accurate charges fast. The V4 is a clean-slate redesign: one assembly that needs no manual adjustment, rebuilt part by part from user feedback.

Key features

• Works with fine ball powders like CFE223 and H335
• Works with large kernel powders like N570 and H50BMG
• Maximum flow rate of about 50 GN/s for large calibre rifle
• Integrated electronics and motors with fixed cabling, so short motor cables never flex or break
• Acrylic panel and silicone pads keep the assembly stable, quiet and level
• Wear parts from earlier versions no longer exist
• Speed setting in the Bluetooth app lets you trade speed against precision, with firmware updates able to improve performance over time
• Works with A&D FX or FZ series balances (120i, 123, 200i, 300i or 500i)

How it works

• Bulk tube: a large tube with deep spiral grooves, inspired by an auger, pours bulk powder at up to 50 GN/s and ramps down smoothly to within 1 to 2 grains of the target.
• Fine tube: a smaller tube takes over and completes the charge to within a single kernel, using a ramping curve based on calibrated flow rates.
• Ready light: a green light shines down through the clear panel when the correct charge weight is reached.
• Belt drive: both tubes are driven directly by toothed timing belts that do not wear out over time.

Design details

• The housing lifts off the acrylic panel without disturbing the scale.
• The tilt angle is factory set. Level the scale using its built-in bubble level and the AutoTrickler sits at the correct angle.
• The electronics module sits inside the housing and is replaceable if ever needed. The scale-side cable can be replaced separately.
• The hopper has a rotating valve so it removes easily, a flat bottom so it can stand on the bench holding powder, and locks positively into the housing. It also blocks the reservoir from opening while the valve is open, which keeps the chance of a spill low.
• To empty powder, remove the hopper, pour the powder back into it, then tilt the unit backwards to clear the tubes. Any remaining powder is visible in the rear reservoir or through the tubes.

Why the A&D FX-123i scale

The V4 is designed to sit at a specific height and expects the fast dynamic response of an A&D FX or FZ balance. The maker recommends dedicating the A&D scale to the AutoTrickler as a complete system rather than adapting another balance, which is why we supply them together.

What independent reviewers and owners say

• Top-tier results: AccurateShooter's powder dispenser roundup, which draws on Ultimate Reloader and other video tests, places a V4 with a quality force restoration scale at the top of electronic dispensing for accuracy, repeatability and speed (source).
• Better than the V3: one owner in an AccurateShooter forum thread finds it faster, more accurate and easier to calibrate, and able to dispense N570, which the V3 could not.
• Needs careful setup: Sniper's Hide posters report overthrows with some powders such as Varget and 8208 and some tuning with shims and flow rates, while others say most issues come from not following the setup instructions. Keep the bench stable, as movement near the scale can disturb readings.

Want the full picture? Read our guide: MacDonald AutoTrickler V4: is an automatic powder dispenser worth it?

Frequently asked questions

Does it handle fine and large kernel powders?
Yes. The maker lists fine ball powders such as CFE223 and H335 and large kernel powders such as N570 and H50BMG.

Which scales does it work with?
A&D FX or FZ series balances. This kit includes the FX-123i, and the maker recommends using it as a dedicated system.

Can I use a different scale?
The V4 requires an A&D FX or FZ model. Other balances are not supported.

Where can I buy the AutoTrickler V4 in Sydney?
From Magnum Sports, 19 Babbage Road, Roseville Chase NSW 2069, or online at magnumsports.com.au.

Always load from published load data and follow safe reloading practice. More from the maker: autotrickler.com AutoTrickler V4 page.