Load data for 7 mm Backcountry + 139gr Barnes LRX BT

652 suitable loads across 110 powder(s) for cartridge 7 mm Backcountry with 139gr Barnes LRX BT bullet.

The most recommended powders for this combination are Alliant Power Pro 2000-MR, Alliant Reloder-26 and ReloadSwiss RS 60.

Based on SAAMI, the max. allowed case length is 2.417 in / 61.39 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 79,916 PSI / 5,510 bar.

Based on SAAMI, the max. allowed case length is 2.417 in / 61.39 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 79,916 PSI / 5,510 bar.

Load Specifications

ImperialMetric

Bullet:.284 | 139gr | LRX BT

Cartridge:7 mm Backcountry load data

Case Length (L3):2.417" | 61.4 mm

Cartridge Length (COL/L6):•••

Seated Depth:0.511" | 13.0 mm

Case Capacity:73 gow | 4.73 cm³

Primer Size:Large Rifle (LR)

Max. Pressure (SAAMI):79,916 psi | 5,510 bar

Barrel Length:20.0" | 508 mm

Min. Twist Rate:1:9.5

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Community Loads for 7 mm Backcountry + 139gr Barnes LRX BT

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

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

	67.0 gr	3.340"	18.0"	2884 fps	•••

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