Nammo · Extruded

N165

Very slow Vihtavuori powder for large magnum cases.

Manufacturer
Vihtavuori
Grain shape
Extruded
Burn rank
#73
Category
Medium-Slow
Temp sensitivity
Low
Application
Rifle
Origin
Finland
Status
Active

Burn-rate position

FastestSlowest

Rank #73 on the burn-rate scale · Medium-Slow

Typical cartridges

Substitutes

Listed substitutions with charge guidance. Always start at published minimums and work up.

H4831 · HodgdonPublished

Very close burn rate to H4831; suitable direct substitution with standard workup.

By cartridge

Similar burn rate

Supply & handling

Availability (US)
Moderate
Shortage-prone
No
Suppressor-friendly
Yes
Flash-suppressed
No

About this powder

N165 sits between N160 and N170, covering the transition zone between belted magnums and ultra-magnums. Particularly effective in .338 Lapua and .300 Ultra Mag with heavy bullets at the slower end of their pressure window.

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Sources & provenance