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April 9, 2015
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Set:1
Created: 06/06/15 03:25 PM
Description: dan wesson 357 super magnum
Notes 1: 158 gr Jamison ammo .357 Maximum
Notes 2: 10" barrel
Distance to Chrono(FT): 10.00
Bullet Weight(gr): 158.00
Shots:
# FPS / FT-LBS
5 1415 / 703
4 1491 / 780
3 1480 / 769
2 1464 / 752
1 1538 / 830
Average: 1477.6 FPS
SD: 44.5 FPS
Min: 1415 FPS
Max: 1538 FPS
Spread: 123 FPS
True MV: 1479 FPS
Set: 2
Created: 06/06/15 03:31 PM
Description: dan wesson 357 super magnum
Notes 1: 158 gr Jamison ammo .357 Maximum
Notes 2: 10" barrel
Distance to Chrono(FT): 10.00
Bullet Weight(gr): 158.00
Shots:
# FPS / FT-LBS
5 1486 / 775
4 1503 / 793
3 1487 / 776
2 1472 / 760
1 1427 / 715
Average: 1475.0 FPS
SD: 29.0 FPS
Min: 1427 FPS
Max: 1503 FPS
Spread: 76 FPS
True MV: 1476 FPS
Set: 3
Created: 06/06/15 03:34 PM
Description: dan wesson 357 super magnum
Notes 1: 158 gr Jamison ammo .357 Maximum
Notes 2: 10" barrel
Distance to Chrono(FT): 10.00
Bullet Weight(gr): 158.00
Shots:
# FPS / FT-LBS
5 1493 / 782
4 1513 / 803
3 1443 / 731
2 1427 / 715
1 1442 / 730
Average: 1463.6 FPS
SD: 37.2 FPS
Min: 1427 FPS
Max: 1513 FPS
Spread: 86 FPS
True MV: 1465 FPS
Well here is the Data from today at the range with the Super Mag for the first time. Now I have some empty brass to reload. This Jamison Ammo would simply NOT fire in double action due to light primer strikes. I am not sure if the primer cup was too hard/thick or possibly it wasn't seated deep enough? The Jamison did much better in single action, but there were several rounds that needed to be re-struck two or three times in single action to fire.
I did shoot several of my reloads in regular .357 Magnum with Federal Small Pistol Primers and they fired fine in double action and single action. So the Primers in the Jamison Ammo is the issue as far as I am concerned. Hope this is interesting/useful to others.
“We cannot but pity the boy who has never fired a gun; he is no more
humane, while his education has been sadly neglected.”
-Henry David Thoreau
“When some of my friends have asked me anxiously about their boys, whether
they should let them hunt, I have answered, yes – remembering that it was
one of the best parts of my education – *make* them hunters.”
-Henry David Thoreau
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