.375 | 270gr | Speer Boat-Tail

About this bullet

.375 | 270gr | Speer Boat-Tail is a bullet made by Speer. At 270 gr (17.5 g) and a diameter of 0.375'' (9.52 mm) it suits handloads where bullet weight and barrel length have to be matched carefully. Its G1 ballistic coefficient of 0.429 drives velocity retention and wind drift downrange — higher values mean a flatter trajectory at distance. A twist rate of 1:6.0 is recommended for stable flight; slower twists can under-stabilise this bullet. We currently list 1000 load recipes across 18 calibers for this bullet.

Most popular calibers for this bullet

Load data for .375 | 270gr | Speer Boat-Tail bullet is available in the following calibers:

• .369 N.E. Purdey
• .375 Blaser Mag.
• .375 Chey Tac
• .375 EnABELR
• .375 Fl. Mag. N.E.
• .375 Fl. N.E. 2 1/2''
• .375 H&H Mag.
• .375 Hoelderlin
• .375 R Hoelderlin
• .375 R Verney-Carron
• .375 Raptor
• .375 Rem. Ultra Mag.
• .375 Ruger
• .375 Swiss P
• .375 Weath. Mag.
• .378 Weath. Mag.
• 37XC
• 9.5 x 66 SE v. Hofe

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.