bjornf16
Well-known member
From December 2021:
Staycation time, so plenty of trips to my local range.
Sako 85 300 WSM 11" twist
IMR 4166
Norma 300 WSM brass
CCI 250 LRM primers
Captured velocity with both LabRadar and Magnetospeed. They were within 1% up to 3300 FPS, then the Magnetospeed was registering significantly less velocity than the LabRadar. Not sure what is causing the anomaly. External battery pack on the LabRadar. Muzzle brake in middle of Magnetospeed "blast area". LabRadar was registering what I would consider "normal" increase with the powder increment; the MagnetoSpeed seemed to stumble after 3300 FPS.
Anyone else run across this issue with MagnetoSpeed?
Had rain early in the morning, so humidity was high. Temps in mid 40's.
152 HH was up first:
COAL 2.855"
Without any pressure signs, looks like I have room to go.
Staycation time, so plenty of trips to my local range.
Sako 85 300 WSM 11" twist
IMR 4166
Norma 300 WSM brass
CCI 250 LRM primers
Captured velocity with both LabRadar and Magnetospeed. They were within 1% up to 3300 FPS, then the Magnetospeed was registering significantly less velocity than the LabRadar. Not sure what is causing the anomaly. External battery pack on the LabRadar. Muzzle brake in middle of Magnetospeed "blast area". LabRadar was registering what I would consider "normal" increase with the powder increment; the MagnetoSpeed seemed to stumble after 3300 FPS.
Anyone else run across this issue with MagnetoSpeed?
Had rain early in the morning, so humidity was high. Temps in mid 40's.
152 HH was up first:
COAL 2.855"
H4166 | Velocity | Comment |
57 | 3000 | |
57 | 3008 | |
58 | 3034 | |
59 | 3119 | |
60 | 3170 | |
61 | 3238 | |
61.5 | 3264 | |
62 | 3271 | No pressure signs |
Without any pressure signs, looks like I have room to go.
Last edited: