300 WSM 1000 yard ladder test.

[dkhunt14]

So for you long range shooters what do you find to be a somewhat avg on ES and SD at 1K in accuracy testing?
I know for me at 600 it's usually an ES of 12-18 fps is where I find my loads to yield the best accuracy.

I find most my best loads are between 10 and 15. The low ES ones never seem to be the best. Back in 2005 I had a really good 308 Baer Heavygun. The Best loads at 1000 averaged 20 to 25 ES. That gun won a lot and set a few records. Matt

 

[JamesnTN]

Hi can you help me understand the O numbers vs the x number

O started at a lower velocity 2912 and had an ES of 10fps
X was 12fps faster 2924 but had the same ES 10.
an increase in velocity .004% wouldn't (shouldn't) have an increased sd of 1 or 21%

those are tight groups and would be exciting to work with

There are .010 difference in each seating depth. That's what the 2.450, 2.460, and the 2.470 numbers represent.

 

[Trevor60]

There are .010 difference in each seating depth. That's what the 2.450, 2.460, and the 2.470 numbers represent.

thank you. i am following the depth numbers

IT is the ES and SD numbers that are puzzling. if both have an ES of 10 but the two speeds are different there should be a reduction in SD for the higher velocity bullets below 3.6 not worse at 4.6.

I edited my post i had entered the wrong numbers in excel a spread of 10 for both...

thank you

 

[JamesnTN]

please disregard when i run an excel program and punch in the ES of the two speeds the SD numbers are as you have written 3.6 and 4.6. i need more learning
thank you

Yea I don't understand how the Labrador came up with different SD numbers when the ES was the same.

 

[Trevor60]

Yea I don't understand how the Labrador came up with different SD numbers when the ES was the same.

it is working and you have excellent results so keep going... believe the bullet

 

[eric32]

JamesnTN,

was the charge window you are 63.5-64.0gr does the velocity stabilize and create a flat spot in relation to gain in velocity and charge weight increase.

 

[JamesnTN]

JamesnTN,

was the charge window you are 63.5-64.0gr does the velocity stabilize and create a flat spot in relation to gain in velocity and charge weight increase.

I did a test today starting at 63.3 and going up in .2 grain increments. I was flat at 63.3 and 63.5 and then I had a slight rise at 63.7 and then it went to crap at 63.9. Today's conditions weren't the best as I had wind conditions that would letup and then pick back up. I ran off and forgot my chrono as I was in a hurry hopefully not to beat the storm that was coming in.

 

[BOB LEE SWAGGER]

James, are you using a custom reamer and dies?

 

[JamesnTN]

James, are you using a custom reamer and dies?

Custom reamer yes, custom dies no. I'm using the Redding competition die set.