75 Grain Speer Gold Dot .22 caliber Bullet Reloading Data?

[The_Savage]

Hi all,

I have been trying to work up a load for the 75 grain speer gold dot bullets, and am now trying five different powders to see which works the best. They are: Varget, H335, Power Pro 2000MR, N140, and CFE 223. The problem is, the Lee reloading manual recommends different max loads than Speer's own data. For example, Lee's data says 25 grains of Varget is max, and Speer's data says 23.6 is the max charge weight. I'm just wondering whose data is correct? Thank you all in advance!

 

[MCFLYFYTER]

I would have to go with speer, as it is their bullet vs Lee's generic bullet data. It least this is my theory, but I was wrong twice before.

 

[Blue68f100]

Are both 5.56 or is 1 223R which runs lower pressure?

 

[MCFLYFYTER]

Are both 5.56 or is 1 223R which runs lower pressure?

The speer data is 556, and is lower charge weight. At least it appears that way from the screenshot

 

[Chuck R.]

Are both 5.56 or is 1 223R which runs lower pressure?

That would be my 1st guess also, ones .223 and the higher is 5.56.

 

[edwardware]

I'm just wondering whose data is correct?

Both datasets are correct; the error is your assumption that they should match.

Lab-to-lab, chamber-to-chamber, brass-to-brass, and batch-to-batch (powder and bullet) variations exist, and all that's before we get to your rifle, components, etc.. The datasets reflect results in a lab, on a day, in a chamber. . . none of which are yours.

You should start low-to-mid, and work up, while paying attention.

 

[AJC1]

You have run into the standard conundrum have expecting the book to provide you an answer. The loading manuals provide you safe starting guidelines for reloading. Spend a lot of time researching and learning about pressure signs, and then do your own work up to validate a Max load in your rifle.

 

[Alliant Reloading]

We shot the 75gr Gold Dot in 223 Rem also. Link below.
https://reloading-data.speer-ammo.c...caliber_224_dia/223_Remington_Gold_Dot_75.pdf