.355 | 124gr | Geco HEXAGON

About this bullet

.355 | 124gr | Geco HEXAGON is a bullet made by Geco. At 124 gr (8.0 g) and a diameter of 0.355'' (9.02 mm) it suits handloads where bullet weight and barrel length have to be matched carefully. Its G1 ballistic coefficient of 0.175 drives velocity retention and wind drift downrange — higher values mean a flatter trajectory at distance. We currently list 565 load recipes across 14 calibers for this bullet.

Most popular calibers for this bullet

Load data for .355 | 124gr | Geco HEXAGON bullet is available in the following calibers:

• .357 Auto Mag.
• .357 Mag.
• .357 Maximum
• .38 Long Colt
• .38 Special
• .38 Super Auto
• .38-45 ACP
• 9 mm FAR
• 9 mm Mauser
• 9 mm Para
• 9 mm Steyr
• 9 x 20 VGW
• 9 x 21
• 9 x 25 Dillon

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.