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Prime Ammo

All I can say is wow!
I got a shipping notice 5 minutes after my order yesterday. Figured a label was just created.
Today the order showed up! Will be my 1st time using Prime ammo. Hope they have more sales.
 
Free shipping too!
Bought 2 cases of .308 and am contemplating buying a case of .223 Win. Anybody have experience with the 75+ great ammo? It'd be for bolt gun.
 
I didn’t have that problem at all. Single digit Wisconsin winter, to hot South Dakota spring and Wisconsin summer my numbers were fairly stable.

Here are my numbers. All taken on the same day at Core with a Magnetospeed and all ammunition kept in the shade in original box until time to shoot. I was deliberately careful because I wanted true results.

PRIME 130gr
Temperature (F): 42
Density Altitude (Ft): -380
Velocity FPS: 2882
Standard Deviation: 14

Temperature (F): 45
Density Altitude (Ft): -740
Velocity FPS: 2911
Standard Deviation: 10

Temperature (F): 54
Density Altitude (Ft): -260
Velocity FPS: 2910
Standard Deviation: 15

Temperature (F): 62
Density Altitude (Ft): 257
Velocity FPS: 2921
Standard Deviation: 15

Temperature (F): 78
Density Altitude (Ft): 1360
Velocity FPS: 2935
Standard Deviation: 12
 
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It’s solid ammo with a respectable SD at each temp level but a 50 FPS change through sub 40 degrees F change makes this temp sensitive ammunition. I can live with it because I’ve recorded the difference and account for it. As long as it’s consistent from lot to lot it’s fine.
 
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This was on they’re Instagram a little while ago.
 
Shot some of my .260 Prime today out of a semi auto. It's faster than my reloads but shoots good if I do my part.
Primers were cratered a little though.
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Yeah, how are you getting two ejector marks on factory ammo? It’s either not factory ammo or it’s somehow bouncing?

Edit: it’s a semi, so bouncing actually can be a possibility. Have an adjustable block? Are you running +2 length?