.277 | 133gr | Hammer Stone Hammer

About this bullet

.277 | 133gr | Hammer Stone Hammer is a bullet made by Hammer. At 133 gr (8.6 g) and a diameter of 0.277'' (7.04 mm) it suits handloads where bullet weight and barrel length have to be matched carefully. Its G1 ballistic coefficient of 0.391 drives velocity retention and wind drift downrange — higher values mean a flatter trajectory at distance. A twist rate of 1:10.5 is recommended for stable flight; slower twists can under-stabilise this bullet.

Load data for .277 | 133gr | Hammer Stone Hammer bullet is available in the following calibers:

• .27 Nosler
• .270 Weath. Mag.
• .270 Win.
• .270 Win. Ackley Improved
• .270 WSM
• .277 Fury
• .277 Fury Commercial
• 6.8 mm Rem. SPC
• 6.8 Western
• 7 x 44 Penna

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.