As promised I have some chrono info from my Magneto Speed. I have been working on some problems I have had with it since I got it a few weeks ago. I finally realized the cord between the box and the sensor was bad, among other things. I replaced the cord today and got some data that I am confident in. You will have to excuse the formatting, I am not a spreadsheet guy but more of a database guy. Information and velocities listed for Gun B were made today, by me using my personal firearm. Any other velocities listed are from other sources that I have not verified. DISCLAIMER All of the info here was derived by pulling factory ammo apart and weighing components, there may be errors in my measurements. Do not use any information here as valid load data. You have been warned.
Brand: Federal Eagle
Designation: AE5728A
Bullet: 40 grain TMJ concave base
Bullet Retention: Glued
Powder: Flat disc unknown brand
Charge: 4.6 grain
Primer: SRP
Primer crimped: No
COAL: 1.5735 - 1.5820
Gun A: PSA Rock 4.7
Gun B: PSA Rock 5.2 P
Velocity A: 1632 FPS
Velocity B: 1703 SD 16.4
Brand: FN
Designation: SS197SR LF
Bullet: 40 grain Hornady V Max
Bullet Retention: Glued
Powder: FN flat disc unknown
Charge: 4.87
Primer: SRP
Primer crimped: No
COAL: 1.590
Gun A: PSA Rock 5.2
Gun B: PSA Rock 5.2 P
Velocity A: 1709 FPS
Velocity B: 1722 SD 20.7
Brand: FN
Designation: SS195 LF
Bullet: FN 28 grain Aluminum Core
Bullet Retention: Glued
Powder: FN Spherical unknown
Charge: 6.2
Primer: SRP
Primer crimped: Yes
COAL: 1.578
Gun A: PSA Rock 4.7
Gun B: PSA Rock 5.2
Velocity A: 1999 FPS
Velocity B: 2135 SD 10.9
Brand: FN
Designation: SS198 LF
Bullet: FN 28 grain Aluminum Core
Bullet Retention: Glued
Powder: FN Spherical unknown
Charge: 6.6
Primer: SRP
Primer crimped: Yes
COAL: 1.5790
Gun A: PSA Rock 5.2
Gun B: PSA Rock 5.2 P
Velocity A: 2200 FPS
Velocity B: 2231 SD 14.1
Brand: Elite Ammo
Designation: S4
Description:
Bullet: FN 27 grain Aluminum Core
Powder: Spherical unknown
Charge: 6.9
Primer: SRP
Primer crimped: Yes
COAL: 1.590
Gun A: PSA Rock
Gun B: PSA Rock 5.2 P
Velocity A: 2300 FPS
Velocity B: 2304 SD 8.8
Brand: Reload
Designation: SS197 Copy
Description: Reloaded FN brass using info from common sources
Bullet: 40 grain Hornady V Max
Bullet Retention: Crimped
Powder: Ramshot True Blue
Charge: 5.5 grain
Primer: SRP
Primer crimped: No
COAL: 1.589
Gun B: PSA Rock 5.2 P
Velocity B: 1829 SD 22.9
Brand: Reload
Designation: 35 grain
Description: Reloaded FN brass using info from common sources
Bullet: 35 grain Hornady V Max flat base
Bullet Retention: Crimped
Powder: Ramshot True Blue
Charge: 6.2
Primer: SRP
Primer crimped: No
COAL: 1.490
Gun B: PSA Rock 5.2 P
Velocity B: 2095 SD 21.3