7prc factory ammo

[yachciksc]

175 gr factory ammo from hornaday. Switched primers from one lot to the next lot. Found a consistent 25 fps difference. Would the primer do that?

 

[ZReed85]

Absolutely the primer can do that

 

[deputyrpa]

Can you tell what the primer brands are?

 

[nhenry]

Can you tell what the primer brands are?

Looks like CCI 250 and WLRM to me. Who knows what they use, though.

 

[Brad Quarnberg]

Could be the primer or maybe the powder. If they change lots or type in their factory ammo. I've seen in my reloads a change like that from one lot to another of the same powder.

 

[nhenry]

Could be the primer or maybe the powder. If they change lots or type in their factory ammo. I've seen in my reloads a change like that from one lot to another of the same powder.

I can't recall where I saw it, but different lots of the 7 PRC ammo had different types of powder as well when the bullets were pulled, so it's very possible it's different powders as well.

 

[Reelamin]

Are you determining they used different primers due to the cup color? No one knows what primers they use. Easily based on volume could order the same primer with a different color. To the question..... for me 25fps is a non thought, and you could easily see 25fps difference in every box out of the same case of 50 boxes.

 

[Trm82]

Are you determining they used different primers due to the cup color? No one knows what primers they use. Easily based on volume could order the same primer with a different color. To the question..... for me 25fps is a non thought, and you could easily see 25fps difference in every box out of the same case of 50 boxes.

I beg to differ , when I did have the garbage hornady ammo in 175PH I pulled the primers and they were Fed 215. You can tell the difference. 215 are purple and the 210s are red ish.
Each brand of primer has a distinct look and characteristic on the inside.