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Somchem S221

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Somchem S221 powder load data

Powder Specifications:

Propellant / Powder:
Somchem S221
Relative Burn Rate:
6.4 (0 ... slow| 10 ... fast)
Weapon Use:
Rifles, Pistols, Revolvers
Density:
101.13lbs/ft3 | 1620kg/m3
Bulk Density:
59.93lbs/ft3 | 960kg/m3
PID:
PID_239
Last updated:
2/18/2025
Somchem

Medium burning spherical propellant for revolvers and pistols

Find all Somchem load data in the powder manufacturer section.

Suitable and popular calibers for Somchem S221

The following table indicates  for which caliber and bullet weight range (in grains) this powder is suitable (👍) and popular among our reloading community (👍👍).  This might evolve over time as more community members share their loads and as we accumulate more calculations and tests with our balistics calculator.

Bullet Weight (gr) ->
0-50
50-75
75-100
100-150
150-200
200-300
>300
.44 Rem. Mag.
👍
.454 Casull Magnum
👍
5.7 x 28
👍
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