AMP MKII brass codes and ?

sveltri

WKR
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I know the easiest/right thing to do is Aztec a piece and just be done but my OCD hates seeing that missing brass in the ammo box. Is anyone willing to share codes for different cartridges and lot #’s? How much variation have you seen lot to lot for Lapua 6.5 CM or Lapua brass in general in terms of AMP codes?
 
I Aztec’d my first piece of Lapua last week and it hurt to do it lol. But I wanted the best reading from my machine to get it right. Plus I anneal as first step before any cleaning and figure the codes it give may be different then if it’s done say after cleaning possibly.

I just wanted piece of mind knowing the code was perfect for my lots of brass in the condition I’ll always be annealing so I did the sacrifice.
 
I try to get a sample of three from new virgin brass and then use the average. On 1x fired factory loaded brass I double that . I don't bother "burning" Peterson anymore since it's so consistent and the factory provided AMP code matches my tests as well.
Either way, here are two lots of Lapua, hope it helps.20250321_180245.jpg
 
When I Aztec’ed two once fired Lapua 6.5 PRC’s I got 0194.

I test mine after wet tumbling. Were yours clean or dirty? Not sure if that matters. Also, I use all the correct pilots for each cartridge. There could just be variation in the induction element for each unit.
 
I test mine after wet tumbling. Were yours clean or dirty? Not sure if that matters. Also, I use all the correct pilots for each cartridge. There could just be variation in the induction element for each unit.

They were wet tumbled/clean. Purchased as reloading brass (not loaded ammo) and using the correct pilot (#20 if memory serves).
 
What do the numbers mean in the code. Are they an arbitrary number or do they represent time in some manner?
 
25 creed peterson- 0153 aztec
6.5 creedmoor Hdy 0141 aztec
6.5x284 0174 lapua, 0171 peterson
300wsm norma aztec 0162
Peterson 65prc 0149
Adg 7rem 0139
Adg 338 rum- 0140
Adg 30nos adg- 0142
Adg 7max- 0158
Adg 6.5 prc 0150, nk turned 144
Adg 25sst-0153
Adg 6.5 max 0140, nk turned
Adg 6.5 saum 150
Adg 6-6.5 Saum, 152
Adg 6UM, 148
Adg 6 PRC, 152
Adg 7lrm, 0155
Adg 7saum 0156
Lapua 22 creed 0175
Lapua 6mm creed 168
Lapua 65mm creed 158
Lapua 6br 155
Lapua 22br 160
Lapua 25 PRC 189
Lapua 65 PRC 185
Lapua 300nmi 0180
Alpha 25 redneck 155
Alpha 22cm 0153
Alpha 25cm 0150
Aplha 25x47 0145
Alpha 6cm. 0150
Alpha 65cm 0150
Alpha 6bra 0144
Alpha 25gt 0144
Alpha 6gt 0143
Alpha 22gt 0145
Starline 223 0131
 
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