XXL Reloading
Speer 123gr Gold Dot reloading bullet

.310 | 123gr | Speer Gold Dot

Our reloading data for the .310 | 123gr | Speer Gold Dot bullet covers a total of 43 suitable calibers and 529 load recipes

The Speer Gold Dot bullet is designed with a bonded core and is a leading choice for self-defense and law enforcement applications. Its construction involves electrochemical bonding of the lead core to the jacket, enhancing structural integrity and ensuring consistent weight retention, often exceeding 90 percent upon impact. This construction facilitates reliable expansion, forming a uniform mushroom shape for maximum energy transfer and deeper penetration, typically around 12 to 18 inches, depending on the caliber and target medium. Suitable for medium game hunting, such as deer, the Gold Dot performs effectively in calibers ranging from 9mm to .45 ACP and rifle offerings in .223 Remington to .308 Winchester. For handloaders, Gold Dot bullets offer precise engineering and consistent performance across batches, allowing for confident load development. Their ability to maintain structural coherence under various conditions also makes them a prime choice for reloaders seeking dependable defensive ammunition with versatile terminal performance.

About this bullet

.310 | 123gr | Speer Gold Dot is a bullet made by Speer. At 123 gr (8.0 g) and a diameter of 0.31'' (7.87 mm) it suits handloads where bullet weight and barrel length have to be matched carefully. Its G1 ballistic coefficient of 0.321 drives velocity retention and wind drift downrange — higher values mean a flatter trajectory at distance. A twist rate of 1:16.5 is recommended for stable flight; slower twists can under-stabilise this bullet. We currently list 529 load recipes across 43 calibers for this bullet.

Most popular calibers for this bullet

CaliberLoad recipes
.300 Norma Mag.140
.30-378 Weath. Mag.105
7.62 x 53 R Fin.99
.308 Win.94
7.5 x 54 mm MAS91

Load data for .310 | 123gr | Speer Gold Dot bullet is available in the following calibers:

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.