Reloading Data

[Robin]

Hi again

I have powder finally , ADI 2208.

Looking at the Hornady book it says to load with IMR 4064 from 35.1 to 41.3 and then 42.8 in red, I'm assuming that means load with caution, looking at the ADI site under powder equivalents, ADI 2208 matches with IMR 4064.

The data from ADI using 2208 says Starting 42.0 grain Maximum 46.0 grain (C), so the ADI data starts close to the max and goes beyond what Hornady advises.

My question is what resource do I listen to.

[Oldbloke]

Hi again

I have powder finally , ADI 2208.

Looking at the Hornady book it says to load with IMR 4064 from 35.1 to 41.3 and then 42.8 in red, I'm assuming that means load with caution, looking at the ADI site under powder equivalents, ADI 2208 matches with IMR 4064.

The data from ADI using 2208 says Starting 42.0 grain Maximum 46.0 grain (C), so the ADI data starts close to the max and goes beyond what Hornady advises.

My question is what resource do I listen to.

Your using ADI powder. Use ADI data.

Cartridge?
Bullet?

[bladeracer]

Hi again

I have powder finally , ADI 2208.

Looking at the Hornady book it says to load with IMR 4064 from 35.1 to 41.3 and then 42.8 in red, I'm assuming that means load with caution, looking at the ADI site under powder equivalents, ADI 2208 matches with IMR 4064.

The data from ADI using 2208 says Starting 42.0 grain Maximum 46.0 grain (C), so the ADI data starts close to the max and goes beyond what Hornady advises.

My question is what resource do I listen to.

AR2208 is sold as Varget in the US, not 4064.

[Oldbloke]

ADI quotes IMR 4064.in their table as being equivalent to AR2208. I'm guessing Robin thinks they are identical burn rstes. But of course the table lists approximates. Not identical burn rates.

[bladeracer]

ADI quotes IMR 4064.in their table as being equivalent to AR2208. I'm guessing Robin thinks they are identical burn rstes. But of course the table lists approximates. Not identical burn rates.

That's right, equivalent does not mean you can transpose the data.

[Wapiti]

Mate, Bladeracer is right. Use the data ADI recommend. Do not extrapolate any data for 4064 as useable for 2208.
2208 is exported to, and sold in the US as Varget, and is a very popular powder, as it has particularly high energy in the combustion chamber size/bore ratio in the 308 Winchester. Also very flexible for use in many popular cartridges.
The "equivalent" of 4064 is relative, is made by another manufacturer completely, not available here for many years, and to be used as comparison purposes only, and NOT as load data.

The number you give are identical to 308 Win numbers, which I use extensively, and 46gns is indeed a maximum load with the 150gn projectile. As an example.

[Robin]

Thanks for clearing this up, as someone new to reloading, its very easy to get confused and mislead, its almost like comparing red apples to green apples , both are apples, however both are different .

I'll use the ADI data and hopefully have some rounds to test this weekend

[Wapiti]

Hi again

I have powder finally , ADI 2208.

Looking at the Hornady book it says to load with IMR 4064 from 35.1 to 41.3 and then 42.8 in red, I'm assuming that means load with caution, looking at the ADI site under powder equivalents, ADI 2208 matches with IMR 4064.

The data from ADI using 2208 says Starting 42.0 grain Maximum 46.0 grain (C), so the ADI data starts close to the max and goes beyond what Hornady advises.

My question is what resource do I listen to.

Your using ADI powder. Use ADI data.

Cartridge?
Bullet?

Cartridge and bullet is absolutely irrelevant to both the question and the answer.

[Wapiti]

Thanks for clearing this up, as someone new to reloading, its very easy to get confused and mislead, its almost like comparing red apples to green apples , both are apples, however both are different .

I'll use the ADI data and hopefully have some rounds to test this weekend

Great stuff mate keep us posted, the results could be useful for many of us!

[Robin]

Thanks for clearing this up, as someone new to reloading, its very easy to get confused and mislead, its almost like comparing red apples to green apples , both are apples, however both are different .

I'll use the ADI data and hopefully have some rounds to test this weekend

Great stuff mate keep us posted, the results could be useful for many of us!

I'll take a before and after pic of my fingers so I know if I still have 10.

[No1Mk3]

The other consideration when using approximations of burn rates from tables is that a given weight of one makers powder, whilst having similar burn rates, may produce completely different gas volumes form another makers powder and changing the time that peak pressures develop and last. This is why it is always a good idea to start a couple of grains lower when using such tables. Another point to think on is that all load data is derived under very specific and controlled laboratory conditions regarding powder, primer, chamber size, barrel size, temperature, humidity, cartridge case volume etc. Change even one of those variables and the data is no longer valid, so all published data is given with these variables in mind to make it safe under a wide range of reloading and firing conditions, ergo the data is NOT set in stone so published starting and max loads again consider these things. Finally, maximum loads are published in different books as determined by Corporate Lawyers seeking to minimize the risk of lawsuits, and is SOMETIMES less than optimal. So you will hear some shooters talking about using loads quite a bit over all published data, just remember those of us who do this have a good deal of experience and have reached such loads by careful experimentation in specific rifles using specific components and with consideration of weather conditions. As the others have stated, use a powder makers/sellers (only a very few companies actually make powder) data and Burn Rate tables as a guide with the idea of starting a few (2 - 3 typically) grains lower than starting to see how things go in your rifle, Cheers,

[Oldbloke]

Hi again

I have powder finally , ADI 2208.

Looking at the Hornady book it says to load with IMR 4064 from 35.1 to 41.3 and then 42.8 in red, I'm assuming that means load with caution, looking at the ADI site under powder equivalents, ADI 2208 matches with IMR 4064.

The data from ADI using 2208 says Starting 42.0 grain Maximum 46.0 grain (C), so the ADI data starts close to the max and goes beyond what Hornady advises.

My question is what resource do I listen to.

Your using ADI powder. Use ADI data.

Cartridge?
Bullet?

Cartridge and bullet is absolutely irrelevant to both the question and the answer.

Well, perhaps? As it happens I have access to a LOT of reloading data. Perhaps I could have been of assistance mate.

But, without that additional info I can't provide any of the data that I have.

Robin can contact me via PM i guess if he would like to investigate. I guess its up to him to decide.

[bigrich]

Hi again

I have powder finally , ADI 2208.

Looking at the Hornady book it says to load with IMR 4064 from 35.1 to 41.3 and then 42.8 in red, I'm assuming that means load with caution, looking at the ADI site under powder equivalents, ADI 2208 matches with IMR 4064.

The data from ADI using 2208 says Starting 42.0 grain Maximum 46.0 grain (C), so the ADI data starts close to the max and goes beyond what Hornady advises.

My question is what resource do I listen to.

as others have said , stick to ADI data for ADI powder . american data gets more lawyer -ized with every year . they soften their load pressures so boby joe doesn't sue after doing something stupid and losing a hand or eye. most reloaders start middle of the road powder charge wise and go up in increments towards the listed maximum powder charge . i go up .5 of a grain in 308 sized cases and .2 gn in a 222 case when working up . variations in "freebore" between different makes of gun can influence pressure as does trying to seat closer to the lands. years ago when doing load development i switched primer brands and the match primers i switched to upped the pressure . be cautious, use common sense and ask questions of those that are more knowledgeable . wish you all the best and be safe

[Robin]

Hi again

I have powder finally , ADI 2208.

Looking at the Hornady book it says to load with IMR 4064 from 35.1 to 41.3 and then 42.8 in red, I'm assuming that means load with caution, looking at the ADI site under powder equivalents, ADI 2208 matches with IMR 4064.

The data from ADI using 2208 says Starting 42.0 grain Maximum 46.0 grain (C), so the ADI data starts close to the max and goes beyond what Hornady advises.

My question is what resource do I listen to.

as others have said , stick to ADI data for ADI powder . american data gets more lawyer -ized with every year . they soften their load pressures so boby joe doesn't sue after doing something stupid and losing a hand or eye. most reloaders start middle of the road powder charge wise and go up in increments towards the listed maximum powder charge . i go up .5 of a grain in 308 sized cases and .2 gn in a 222 case when working up . variations in "freebore" between different makes of gun can influence pressure as does trying to seat closer to the lands. years ago when doing load development i switched primer brands and the match primers i switched to upped the pressure . be cautious, use common sense and ask questions of those that are more knowledgeable . wish you all the best and be safe

Thanks, and your right, asking knowledgeable people is a good idea.