.410 | 220gr | Speer JSP-SWC

About this bullet

.410 | 220gr | Speer JSP-SWC is a bullet made by Speer. At 220 gr (14.3 g) and a diameter of 0.41'' (10.41 mm) it suits handloads where bullet weight and barrel length have to be matched carefully. Its G1 ballistic coefficient of 0.137 drives velocity retention and wind drift downrange — higher values mean a flatter trajectory at distance.

Load data for .410 | 220gr | Speer JSP-SWC bullet is available in the following calibers:

• .401 Win. SL
• 10.3 x 60 R Swiss

Safety notes

All load data is reference data only. Always start at the minimum charge and work up in small steps while watching for pressure signs. Never exceed the maximum charge published by the powder or bullet manufacturer.