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MagnetoSpeed

V3 Ballistic Chronograph

Barrel-mounted electromagnetic chronograph that ignores light, weather, and muzzle blast direction. Mounts on barrels and suppressors from 0.5 to 2 inches in diameter and reads to 99.5-99.9 percent accuracy, all for $219.

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Quick Specs

Price
$219
Weight
1 lb
Brand
MagnetoSpeed
Category
chronograph

Features

  • Electromagnetic barrel-mount
  • Fits 0.5-2 in barrel/suppressor
  • 99.5-99.9% accuracy
  • 9V or 2x CR123 power
  • Hard case, full bayonet kit

Capability Boosts

Reliability+2

Recommended For

Home Defense+2
Duty/Patrol+2
Outdoor Defense+2

Compatibility Tags

type: chronographguide-onlytech: electromagneticmount: barreluse: reloadingtier: valuefeature: weather-immune

Overview

The MagnetoSpeed V3 is the only chronograph in this guide that does not rely on radar or optical sensors. The bayonet clamps to the barrel or suppressor and reads bullet velocity with electromagnetic sensors as the projectile passes the array. Because it mounts at the muzzle, it does not care about cloud cover, dawn/dusk light, rain, snow, sky angle, or muzzle direction. Sample size of one per shot, no missed reads. The trade-off is well known: hanging the bayonet off the muzzle changes barrel harmonics, so the group you shoot through a MagnetoSpeed is not the group you shoot off-bench. Most reloaders use the V3 for velocity verification and load development, then pull it for accuracy testing.

Key Features

  • Electromagnetic sensors, no light or radar required
  • Fits barrels and suppressors from 0.5 to 2 inches in diameter
  • Three inches of clearance for muzzle brakes and flash hiders up to 3 inches long
  • 9V or dual CR123 battery options
  • Hard case, full bayonet kit, and downloadable firmware updates

Pros

  • +Cheapest accurate chronograph in the guide at $219
  • +Reads in any light, any weather, any muzzle direction
  • +Zero alignment, zero setup wait time, just clamp and shoot
  • +Standard for ammunition manufacturers and reloading developers

Cons

  • Hanging mass at the muzzle changes harmonics; pull it before group testing
  • Barrel-mount only; will not read arrows, slugs out of smoothbore shotguns, or BBs
  • No app ecosystem; data lives on the unit and a microSD card

Detailed Specifications

technology
Electromagnetic (barrel-mounted)
accuracy
99.5 to 99.9 percent
barrelFit
0.5 to 2 in diameter
muzzleClearance
Up to 3 in muzzle device length
power
9V or 2x CR123
data
Onboard display + microSD export

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