The Hornady Lock-N-Load Handgun
Metering Assembly is the perfect tool for the reloader
looking to improve the function of their Hornady Lock-N-Load
Powder Measure. The Handgun Metering Assembly features an
adjustment lock ring, which allows settings to be locked in
place permanently for a favorite load. The assembly is designed
to throw charges of pistol powders between 0.5 to 17 grains.
Fits: Hornady Lock-N-Load Powder Measure with Handgun Rotor
Function: Metering Assembly
Notes: Must be used with the handgun rotor, will not work with the Lock-N-Load Bench Rest or Black Powder Measurers
Just what results can you expect from your Hornady powder measure?
Using the large drum the first test produced the following charges:
the 4198 charge was thrown with the measure mounted solidly on the loading bench.
The Unique charge was thrown with the measure mounted in the Hornady Progressive AP.
Small drum. Powder Measure mounted on the Hornady AP
This is representative of what you can expect while reloading handgun cartridges on this loader. Not surprisingly the variation is larger with the smaller charge.
Powder Unique. Two different charge weights.
AP indicates charges thrown with the AP loader.
Manual indicates charges thrown manually. This is included a a control.
Note that manually thrown charges are slightly more
consistent than those from the AP reloader. The 3+ grain charge
was thrown with exactly the same drum setting. The only
difference was the mounting of the powder measure.
|Unique AP||Unique AP||Unique Manual|
Unique charge comparison Large Drum vs. Small Drum
|Large Drum||Small Drum|
** This 3.7 reading is NOT a typo.
Note that the variation is significantly greater with the
Even if we discard that 3.7 reading the large drum variation is still 1.0 full grain against .2 grain for the small drum.
Conclusion: Do not use the large metering drum for small pistol charges.
How about small rifle charges?
This test uses the large drum and compares two methods of throwing 4198.
This test was done manually with the measure mounted solidly to the bench.
|Benchmark||IMR 4198||IMR 4198|
|Double Knock||Single Knock|
Note two things: The double knock method is not significantly better than the single knock method with this powder (4198) in this measure.
Benchmark meters much more uniformly than the extruded powder.