LOS Load Data
Our LOS load data covers 27,042 load recipes for 29 bullets and 64 calibers. Find all bullets and reloading data below and compare the performance of different powders for each bullet and caliber combination side-by-side.
LOS is a European-based manufacturer of premium ammunition components, specializing in the production of high-precision bullets and cartridge cases. Established in 2008, the company has focused exclusively on bullet and case manufacturing since 2010, operating out of a modern, state-of-the-art facility located in Slovenia, just an hour from the Italian border.
LOS offers two main bullet lines designed to meet the demands of both sport shooters and hunters. The first is a range of copper-plated bullets, ideal for handgun ammunition, known for their consistent performance, low barrel fouling, and smooth feeding in semi-automatic platforms. The second line features solid brass bullets, engineered specifically for hunting applications, delivering high impact energy, deep penetration, and environmentally conscious, lead-free performance.
Both bullet types are manufactured to strict quality standards and are frequently ranked among the most accurate projectiles in their respective categories. With a focus on innovation, consistency, and precision engineering, LOS continues to support a growing global community of reloaders, competitive shooters, and ethical hunters seeking reliable, European-made ammunition components.
Bullets Covered
29 bullets
All LOS Load Data
9 mm Para + .356 | 123gr | LOS RN
.45 ACP + .451 | 230gr | LOS RN FMJ
9 mm Para + .356 | 145gr | LOS HP
9 mm Para + .356 | 123gr | LOS HP
.38 Special + .357 | 158gr | LOS SWC
.44 Rem. Mag. + .429 | 240gr | LOS RNFP
.45 ACP + .452 | 200gr | LOS SWC
.357 Mag. + .357 | 158gr | LOS SWC
.444 Marlin + .429 | 240gr | LOS RNFP
9 mm Para + .356 | 123gr | LOS FP
.357 Mag. + .357 | 158gr | LOS FP
9 mm Para + .355 | 115gr | LOS RN FMJ
.223 Rem. + .224 | 52gr | LOS Tactic
.45 ACP + .452 | 230gr | LOS RN
.357 Mag. + .357 | 148gr | LOS WC
9 x 21 + .356 | 123gr | LOS FP
.38 Spl. Wad Cut. + .357 | 148gr | LOS WC
9 mm Steyr + .356 | 145gr | LOS HP
9 mm Mauser + .356 | 123gr | LOS HP
.38 Special + .357 | 148gr | LOS WC
.38 Special + .357 | 158gr | LOS HP
9 mm Steyr + .357 | 158gr | LOS SWC
.38 S&W (Colt N.P.) + .357 | 148gr | LOS WC
.45 Colt + .452 | 200gr | LOS SWC
About LOS load data on XXL Reloading
This page collects every LOS bullet we hold reloading data for, grouped by caliber and bullet weight. Each caliber and bullet combination links to a detail page with powder-by-powder load recipes: powder brand and type, start and maximum charge weight in grains and grams, case fill ratio, calculated peak chamber pressure, muzzle velocity and the barrel length the load was computed for.
Unlike a manufacturer's own tables, our LOS data is generated with an inner-ballistics engine across the full powder range, so you can compare many powders side by side for the same bullet instead of the handful a single load manual prints. Charge weights, pressures and velocities are modelled consistently, which makes cross-powder and cross-caliber comparison meaningful when you work up a load.
Use the caliber and bullet-weight filters above to narrow the list, switch to the Bullets tab to browse the LOS product range, and open any combination to see the full load table. All data is calculated reference data for experienced handloaders: always start at the minimum charge, work up carefully in your own rifle, and cross-check against current published data before firing.