Moly Use & Instructions

MidwayUSA Technical Grade Moly Instructions

Molybdenum disulfide or Moly, as it is commonly called, is a lubricant used in extreme pressure conditions due to its high degree of lubricity and high melting point. Technical Grade Moly has been found to reduce bore fouling when applied to bullet surfaces. It will decrease bore cleaning effort and time. Published reports have shown an increase in Ballistic Coefficient, longer barrel life and an increase in accuracy. Technical Grade Moly coated bullets will reduce the pressure and velocity. However, this does not mean that powder can be added indiscriminately. Loads must be worked up slowly to attain previous velocities. The maximum pressure of the cartridge must not be exceeded under any circumstances.

NOTE: Loading Data is not interchangeable. Do not use Loading Data for Moly-Coated bullets with Non-Moly Coated bullets.

Application Instructions

The MidwayUSA 1292 Tumbler™ was used to develop our application techniques. Results may vary with the use of other types of tumblers. Processing time and the quantity of Technical Grade Moly needed may differ due to variations in bullet jacket material and tumbler design. Max load for the 1292 is 10 lbs.

Degrease bullets using warm water and a liquid dishwashing detergent. Rinse well and dry thoroughly before coating with Technical Grade Moly. Do not touch bullets after degreasing.

We recommend using a different bowl for each basic bullet type, i.e., bullets without exposed lead. Bullets with exposed lead and cast bullets should not be coated in the same bowl. The exposed lead will deposit a thin layer of lead on the bowl surface. The lead particles will contaminate the surface of the bullet jacket which will keep the Technical Grade Moly from adhering to the jacket.

Bullets without Exposed Lead: Add 1/8 tsp of Technical Grade Moly per 5 pounds (35,000 grains) of bullets. Do not tumble for more than two hours. Clean bowl after 50 pounds of bullets have been coated.

Bullets with Exposed Lead: Add 1/8 tsp of Technical Grade Moly per 5 pounds (35,000 grains) of bullets. Do not tumble for more than two hours. Clean bowl after each use.

Cast Bullets: Cast lead bullets should be moly coated before being lubed. Moly coating does not replace cast bullet lube. Add 1/4 tsp of Technical Grade Moly per 5 pounds (35,000 grains) of bullets. Do not tumble for more than 30 minutes. Clean bowl after coating 50 pounds of bullets.

Bowl Cleaning: Cleaning the bowl is easily done by using corn cob or walnut media soaked with a bore cleaner (MidwayUSA’s Uni-Solv™ Bore Solvent). Use enough media to fill the bowl above the stain caused by the Technical Grade Moly in the bowl. Pour 3-4 tablespoons of bore cleaner into the media with the tumbler running. Allow the mixture to tumble for 30 minutes or until the bowl is clean. When clean, the bowl should be wiped out with a cloth and degreased with dish washing detergent and water.

The color of the Moly-coated bullet may range from a bronze color to a very dark silver color. The color will vary from lot to lot and from manufacturer to manufacturer.

NOTE: 1 pound = 7,000 grains.

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