Case doesn't shoot well

[Webster]

It is not consistent SD, ES. With Starline I can get single SD , mid teens ES and groups sub ¾.

Sounds like the kind of results to expect from a factory rifle. Your batting head up against a wall trying to make it shoot near 1/2" groups. When NRA test factory rifles and publishes the results in their magazine with factory ammo they typically average around 1-1 1/4" inch groups. Put a 6br Kreiger barrel on the rifle if you want smaller groups. Maybe a 284 WIN. Cannot believe you spent that much money for an annealer for a factory rifle.

 

[Chiquita]

Sounds like the kind of results to expect from a factory rifle. Your batting head up against a wall trying to make it shoot near 1/2" groups. When NRA test factory rifles and publishes the results in their magazine with factory ammo they typically average around 1-1/14" inch groups. Put a 6br Kreiger barrel on the rifle if you want smaller groups. Maybe a 284 WIN. Cannot believe you spent that much money for an annealer for a factory rifle.

Obviously I didn't purchase an AMP just for this rifle or for this brass. But I do understand your point.

 

[Fire Dog]

OH! Maybe it's under annealed with Lapua brass

That does not happen with an AMP machine.
You establish the Aztec code for that particular bunch of brass and that will be it for the life of the rest of them.
New batch/lot, different brand, you burn another case to get the code specific to that lot of cases.
Annealing Made Perfect

 

[Homerange]

That does not happen with an AMP machine.
You establish the Aztec code for that particular bunch of brass and that will be it for the life of the rest of them.
New batch/lot, different brand, you burn another case to get the code specific to that lot of cases.
Annealing Made Perfect

It can if Aztec mode is not installed and the wrong settings are used.

The unit a buddy lent me recently does not have Aztec mode installed so I must look up the recommended settings for every caliber and case brand.

 

[Fire Dog]

It can if Aztec mode is not installed and the wrong settings are used.

The unit a buddy lent me recently does not have Aztec mode installed so I must look up the recommended settings for every caliber and case brand.

That upgrade to the AZTEC system is definitely worth the cost.
Just be aware that the settings AMP posts on their site are specific to cases that have been sent to them for analyst.
{they require 6pcs sent to them in New Zealand}
Otherwise “Your results may vary”….
It is a good guide line if you have similar cases to those listed but different lots do vary and especially over the years. Most of the listings on their site for use in the old models prior to the Aztec system are at least 10 years old now.
The only way to be perfectly accurate using the old system with your brass is to send samples to them {Free Service} and they will send you an email {your brass is not returned} telling what value to use for your brass.

 

[Homerange]

That upgrade to the AZTEC system is definitely worth the cost.
Just be aware that the settings AMP posts on their site are specific to cases that have been sent to them for analysi.
{they require 6pcs sent to them in New Zealand}
Otherwise “Your results may vary”….
It is a good guide line if you have similar cases to those listed but different lots do vary and especially over the years. Most of the listings on their site for use in the old models prior to the Aztec system are at least 10 years old now.
The only way to be perfectly accurate using the old system with your brass is to send samples to them {Free Service} and they will send you an email {your brass is not returned} telling what value to use for your brass.

Yup, all that and I'm using one owned by a very early adopter and friend of AMP management.
He's chosen to not implement the Aztec upgrade and contributed cases to Alex for testing that have ended up on the AMP Settings page with acknowledgement.

I have some LC brass that's not listed but it seems from the no reply from Alex they're no longer interested in expanding their manual settings page but as it's only once fired I chose not to anneal it as I have a few more not fired and have another buddy with a Aztec capable model.

AMP is ~1hrs drive from me south of AKL.

 

[Fire Dog]

Yup, all that and I'm using one owned by a very early adopter and friend of AMP management.
He's chosen to not implement the Aztec upgrade and contributed cases to Alex for testing that have ended up on the AMP Settings page with acknowledgement.

I have some LC brass that's not listed but it seems from the no reply from Alex they're no longer interested in expanding their manual settings page but as it's only once fired I chose not to anneal it as I have a few more not fired and have another buddy with a Aztec capable model.

AMP is ~1hrs drive from me south of AKL.

Down Whangamatā way?
Next time I get across the ditch I hope to get a tour through the factory and if budget allows pick up a MarkII DB. It will plug right in /!\…. {:~)
Never met Alex but have talked via email a few times.
I have plenty of LC and other ex-mil brass that is not always listed and have in the past just used the manual settings as a start and adjust from there if I don’t like the look. Helps a lot if you have cleaned the brass first to get a good idea how the annealing is effecting the case and neck/shoulder area.

 

[Homerange]

Down Whangamatā way?
Next time I get across the ditch I hope to get a tour through the factory and if budget allows pick up a MarkII DB. It will plug right in /!\…. {:~)
Never met Alex but have talked via email a few times.
I have plenty of LC and other ex-mil brass that is not always listed and have in the past just used the manual settings as a start and adjust from there if I don’t like the look. Helps a lot if you have cleaned the brass first to get a good idea how the annealing is effecting the case and neck/shoulder area.

AMP is in Pukekohe south of AKL.
I'm rural NW of AKL, ~30 min from downtown.

You eastern state Oz ?

The LC brass I have shows factory annealing so with a little fiddling by all means you can change settings to duplicate it.

 

[JEFFPPC]

Similar to a bullet that may not shoot well in a barrel. Is it possible that a certain case doesn't shoot well in a rifle?

Absolutely. It's why some shoot numbered case a record record shots by number. Common sense really.

 

[Steve Donlon]

Sounds like the kind of results to expect from a factory rifle. Your batting head up against a wall trying to make it shoot near 1/2" groups. When NRA test factory rifles and publishes the results in their magazine with factory ammo they typically average around 1-1/4" inch groups. Put a 6br Kreiger barrel on the rifle if you want smaller groups. Maybe a 284 WIN. Cannot believe you spent that much money for an annealer for a factory rifle.

Come on. I had a 30-06 Ruger American rifle that shot one hole groups with my reloaded Sierra 168 gr. MK bullets with a Redfield 4-12 scope. That was the first rifle and bullet I ever reloaded for. And it has only gotten better. There are plenty of factory rifles that will shoot that good. I have a Savage 223 that will do the same thing. It's only when you get out at longer ranges that things get complicated from what I have seen.

 

[Homerange]

Come on. I had a 30-06 Ruger American rifle that shot one hole groups with my reloaded Sierra 168 gr. MK bullets with a Redfield 4-12 scope. That was the first rifle and bullet I ever reloaded for. And it has only gotten better. There are plenty of factory rifles that will shoot that good. I have a Savage 223 that will do the same thing. It's only when you get out at longer ranges that things get complicated from what I have seen.

100%
Achieving a 3 shot cloverleaf group in a sporter weight rifle is my goal and nothing I have can't do a 1" group or better with reloads.....even the cheap and horrible budget Remington 770 in 7mm08.

 

[Steve Donlon]

Obviously I didn't purchase an AMP just for this rifle or for this brass. But I do understand your point.

Similar to a bullet that may not shoot well in a barrel. Is it possible that a certain case doesn't shoot well in a rifle?

CityBilly might be right about changing your load. When moving to Lapua brass you could have moved out of the node that was Starline brass. Just back off a 1/2 to 3/4 of a gr. of powder and see. It's good Starline brass works. I'm sure you will figure it out.

 

[Fire Dog]

AMP is in Pukekohe south of AKL.
I'm rural NW of AKL, ~30 min from downtown.

You eastern state Oz ?

The LC brass I have shows factory annealing so with a little fiddling by all means you can change settings to duplicate it.

Yes… Q’ld at the moment

 

[Chiquita]

CityBilly might be right about changing your load. When moving to Lapua brass you could have moved out of the node that was Starline brass. Just back off a 1/2 to 3/4 of a gr. of powder and see. It's good Starline brass works. I'm sure you will figure it out.

I did a load development for the Lapua from scratch.

It could very well be that Lapua will not shoot in my rifle.

 

[wv.citybilly]

Could be internal volume difference - tried comparing Hornady with Lapua using water ?

Good idea.