The RCBS Quick Change High Capacity Drop Tubes are designed for reloaders who want to preset their favorite large capacity rifle charges, such as 110 grains for their 30-378 Weatherby or 120 grains for the 600 Nitro Express. These drop tubes allow you to achieve consistent and precise powder drops for larger rifle cartridges. The High Capacity Drop Tubes, when used with the Quick Change Drop Tube Adaptor, can also be added to existing Uniflow(TM) or Quick Change powder measures. Please note that the Powder Measure should be used in conjunction with an accurate powder scale for setting the original charge and for checking charges occasionally during the run. Choose the RCBS Quick Change High Capacity Drop Tubes and Drop Tube Adaptor and achieve accurate and efficient large capacity rifle charging. Other Quick Change accessory parts shown are for illustrative purposes only. Preset large capacity rifle charges .22-.270 Consistent and precise powder drops Use with powder scale