Description
Somchem S361 is a rifle propellant with a slow burn rate, optimal for a broad spectrum of calibers requiring carefully controlled energy release. Favored for its consistency in long-range and large-caliber applications, its burn characteristics are ideally matched with cartridges such as the 30-06 Springfield, 270 Winchester, and 300 Winchester Magnum, where precision and power are paramount. The extruded powder granules facilitate smooth metering, ensuring uniformity in charge weight and ballistic performance across multiple loads. S361 holds a strong reputation among handloaders for its excellent temperature stability, making it a reliable choice in both hot and cold climates. When developing loads, users should begin with manufacturer-specified starting loads, gradually increasing to desired performance levels while remaining attentive to pressure signs. The primary advantages of S361 include its versatility across numerous rifle calibers and its ability to deliver consistent velocity and accuracy under varying environmental conditions, making it a preferred choice for competitive and hunting shooters alike.
Specifications
Burn Rate
1.8 (Slow)
Bulk Density
0.980 g/cm³
Density
1.620 g/cm³
Temperature Sensitivity
Low
Suitable Substitutes
Powders with a similar burn rate that may be suitable alternatives (also see burn rate chart):
Standard Loads — Somchem S361
Verified load data combinations using Somchem S361.
.22 Creedmoor
Barnes .224 | 77gr | Barnes Match Burner BT 77gr
.22 Creedmoor
Barnes .224 | 85gr | Barnes Match Burner 85gr
.22 Creedmoor
Berger .224 | 77gr | Berger LTB 77gr
.22 Creedmoor
Berger .224 | 77gr | Berger OTM Tactical 77gr
.22 Creedmoor
Berger .224 | 82gr | Berger LTB 82gr
.22 Creedmoor
Berger .224 | 85.5gr | Berger Long Range Hybrid Target 85.5gr
.22 Creedmoor
Berger .224 | 90gr | Berger VLD Target 90gr
.22 Creedmoor
Berger .224 | 90gr | Berger VLD LRBT 90gr
.22 Creedmoor
Hornady .224 | 80gr | Hornady ELD Match 80gr
.22 Creedmoor
Hornady .224 | 88gr | Hornady ELD Match 88gr
.22 Creedmoor
Lapua .224 | 77gr | Lapua ScenarL 77gr
.22 Creedmoor
Nosler .224 | 77gr | Nosler Custom Competition 77gr
.22 Creedmoor
Nosler .224 | 85gr | Nosler RDF 85gr
.22 Creedmoor
Sierra .224 | 77gr | Sierra Hollow Point Boat Tail 77gr
.22 Creedmoor
Sierra .224 | 90gr | Sierra HPBT MatchKinging 90gr
.22 Creedmoor
Sierra .224 | 95gr | Sierra MatchKing 95gr
.220 Howell
Hornady .224 | 73gr | Hornady ELD Match 73gr
.220 Howell
Hornady .224 | 80gr | Hornady ELD-X 80gr
Subsonic Loads — Somchem S361
Verified subsonic load data combinations using Somchem S361.
.30-06 Spring.
Berger .308 | 230gr | Berger Hybrid Target 230gr
.30-06 Spring.
Berger .308 | 230gr | Berger Hybrid OTM Tactical 230gr
.30-06 Spring.
Discreet Ballistics .308 | 188gr | Discreet Ballistics Selous Machined Expander 188gr
.30-06 Spring.
Hornady .308 | 175gr | Hornady Sub-X 175gr
.30-06 Spring.
Hornady .308 | 190gr | Hornady Sub-X 190gr
.30-06 Spring.
Lapua .308 | 200gr | Lapua Subsonic 200gr
.30-06 Spring.
MAKER .308 | 200gr | MAKER 200 Grain .308 Expanding Subsonic Blackout Bullets 200gr
.30-06 Spring.
MAKER .308 | 220gr | MAKER 300 blackout 220gr
.30-06 Spring.
Peregrine .308 | 155gr | Peregrine Subsonic 155gr
.30-06 Spring.
Reichenberg .308 | 154gr | Reichenberg HDB Subsonic 154gr
.30-06 Spring.
Reichenberg .308 | 200gr | Reichenberg Subsonic 200gr
.30-06 Spring.
Sierra .308 | 220gr | Sierra MatchKing 220gr
.30-06 Spring.
Styria Arms | AERO .308 | 190gr | AERO SUB,- smax:23.90 190gr
6.5 Creedmoor
Lehigh Defense .264 | 130gr | Lehigh Defense Controlled Chaos 130gr
6.5 Creedmoor
RWS .264 | 159gr | RWS TMR 159gr
7.5 x 55 Swiss
Berger .308 | 210gr | Berger VLD Target 210gr
7.5 x 55 Swiss
Discreet Ballistics .308 | 188gr | Discreet Ballistics Selous Machined Expander 188gr
7.5 x 55 Swiss
Hornady .308 | 175gr | Hornady Sub-X 175gr
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