Tooling list to maintain the Hornady 366:

Minimum tools:

You can get by with a 6” (150mm) and 12” (300mm) crescent wrench, but the 7/8” (22mm) open end wrench is a must for access to the Taper-Loc bushing nut. This is the one that tightens up against the die head casting. You'll also want a 9" (23mm) long 3/16" (5mm) tip screwdriver to adjust the final crimp plunger and removing dropped shot out from the index plate.

Essential tools:

(The 366 uses US SAE standard sizes. The metric dimensions are only approximate.)

9" (23mm) long 3/16" (5mm) tip screwdriver. Easily reaches in and gets shot out from under the shell plate ring. Also used when changing between gauges and usable for final crimp adjustment as well as changing pre-fold dies from 8-fold to 6-fold (prevents shaft from turning by jamming nut or shaft, depending on the age of your dies). Can also be used for adjusting wad guide height.

Needle-nosed pliers; a smaller size is better. Pulls wads out of hulls and shot out of the priming station, plus a myriad of other uses. Suggest Xcelite SN55 / Klein D221-5½ or equivalent.

9/16” (15mm) for die head hold down bolts, final crimp station lock nut and wad ram nut.

3/4" (19mm) open end wrench; used for primer drop station lock nut and index plate hold down nut.

7/8" (22mm) open end wrench; used for primer seating ram, the pre-fold die, and the Taper-Loc die lock nut.

A crescent wrench is usable in place of the above, but it won't reach in for the Taper-Loc die lock nut. Crescent wrenches also have a way of damaging nut surfaces, particularly at the corners.


Occasional tools:

1 1/4” (32mm) open ended wrench used for deprime station, primer seating station and final crimp lock nuts.

5/32” (4mm) allen wrench for primer seating station.

3/32" (2 mm) allen wrench for 28 and 410 flaring sleeve

3/8” (8mm) wrench primer seating station.

9/16 (15mm) deep socket and ratchet wrench for under support bar tightening.

1/2”/13mm used for operating handle holding nut (older machines).

7/16” (11mm) for charge bar cam and clevis rod (primer knockout linkage).

5/8” (16mm) for platen drive bolts.

Long shaft 5/16" (8mm) nut driver: Xcelite #L10 with a 6" (150mm) shaft. Ratchet sets tend be wobbly with an extension. Used for setting the height of the wad guide. Adjust the height to 2.6" (66 mm) from the index plate. This height pretty much works well with all 2 3/4" (70mm) length 12, 20 and 28 gauge hulls. Set the 2 1/2" 410's height to 2 3/16"  (55mm).

Small hammer for drive link roll pins and to tap out the occasional stuck hull from the resize station. A flat head punch guilds the lily for the latter job.

6” (150mm) steel rule. To re-set dies after an adjustment. Assumes you've pre-measured die heights first...

Large slip joint pliers. I use 8” (200mm) size. Sometimes things just don't screw into the die head casting easily, even with thread cleaning and a drop or two of oil. A little electrical tape helps prevent marring.

If a case mouth gets jammed in the final crimp die (due to insufficient or defective pre-fold crimp) a protected-jaw bench vise may be useful to take the final crimp die apart. Brass pulling off the hull will also force a crimp die dis-assembly. Neither event happens very often.

If the primer drop tube gets badly mis-adjusted, the mouth can develop a burr preventing primers from dropping. A small 1/2" (13mm) hand reamer judiciously applied works well to remove the burr. A small 1/2 round file could be carefully used, as well.

Other tools of use:

7” (180mm) hull saver from Precision Reloading, model MMHS7. 

Shell cutter to take apart those shells that come out with BB losing crimps (An alternative is to drip candle wax on the crimp. Be careful with the open candle flame! The dripped wax sealant -- use plenty -- usually will hold to the range.). Yes, single edge razor blades and knives work, but the potential for a mess is high. A shell cutter helps with the housekeeping, assuring the loading area stays powder and shot free by eliminating spillage. Ballistic Products and Precision Reloading both offer one and they are often seen elsewhere. As on www.trapshooters.com.

Small screwdriver with a hook bent into it. An Xcelite R3322 is one model. Used to pull open closed crimps and save valuable hulls.

Inexpensive micrometer to use if you're curious about shot size. Measure at least 25 to get a sense; measure at least 300 if want definitive answer (thanx to Larry Nailon of Clearview products). Make several measurements of each pellet and average because shot is not round (0.002" is very good as these things go: I've seen +/- 0.008" and worse.) Putting the measurements into a spread sheet and sorting the values will also allow you to assess grading quality. Make sure wash your hands completely when you are done.

You may find a car radiator-fill size funnel useful for filling the shot and powder tubes and for returning powder to the keg.

Finally, perhaps a magnet with a long flexible extension handle for picking up primers and other parts that somehow manage to get into the darnedest, hardest-to-reach spaces.


Link to Part II

Link to Part III

Thanx to Chuck Dietl for reviewing and sharing his comments to make this article better.

Appreciation is extended to Ryan Vijil for the inspiration to write this series.

As always in America in these times, use of the information above is at your own risk.

A final note of appreciation and a big thanks to Hornady for keeping this press in production and parts easily available!

Revised 5/16/2011