Load data for .280 Rem. + 145gr Speer Grand Slam

Based on C.I.P., the max. allowed case length is 2.540 in / 64.52 mm, the max. cartridge length is 3.330 in / 84.58 mm, and the max. allowed pressure is 58,740 PSI / 4,050 bar.

Based on C.I.P., the max. allowed case length is 2.540 in / 64.52 mm, the max. cartridge length is 3.330 in / 84.58 mm, and the max. allowed pressure is 58,740 PSI / 4,050 bar.

Load Specifications

ImperialMetric

Bullet:.284 | 145gr | Grand Slam

Cartridge:.280 Rem. load data

Case Length (L3):2.540" | 64.5 mm

Cartridge Length (COL/L6):•••

Seated Depth:0.375" | 9.5 mm

Case Capacity:67.9 gow | 4.40 cm³

Primer Size:Large Rifle (LR)

Max. Pressure (C.I.P.):58,740 psi | 4,050 bar

Barrel Length:24.0" | 610 mm

Min. Twist Rate:1:13.0

Get PRO license to unlock all data and calculators

Community Loads for .280 Rem. + 145gr Speer Grand Slam

Real loads for this combination shared by our community. Charge weights are only fully visible with an active Pro licence.

Charge (gr)	C.O.L.	Barrel Length	Velocity (fps)	Pressure (psi)

54.0 gr	3.275"	—	2591 fps	•••
56.0 gr	3.275"	—	2688 fps	•••

50.0 gr	3.275"	—	2680 fps	•••
•••	3.275"	—	2877 fps	•••

•••	3.275"	—	2665 fps	•••
•••	3.275"	—	2930 fps	•••

•••	3.275"	—	2611 fps	•••
•••	3.275"	—	2867 fps	•••

•••	3.275"	—	2778 fps	•••
•••	3.275"	—	2876 fps	•••

•••	3.275"	—	2566 fps	•••
•••	3.275"	—	2665 fps	•••

•••	3.275"	—	2748 fps	•••
•••	3.275"	—	2845 fps	•••

•••	3.275"	—	2620 fps	•••
•••	3.275"	—	2721 fps	•••

•••	3.275"	—	2730 fps	•••

•••	3.275"	—	2711 fps	•••

•••	3.275"	—	2681 fps	•••
•••	3.275"	—	2867 fps	•••

•••	3.275"	—	2835 fps	•••
•••	3.275"	—	2926 fps	•••

•••	3.275"	—	2579 fps	•••
•••	3.275"	—	2769 fps	•••

•••	3.275"	—	2541 fps	•••
•••	3.275"	—	2641 fps	•••

•••	3.275"	—	2710 fps	•••
•••	3.275"	—	2970 fps	•••

Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.