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Hmmm.

I load for 308 on a chargemaster, and I get a pretty low ES. Apart from the first round (clean, cold bore) it was around 8-12 fps IIRC. I did nothing except neck size new Lapua brass, and do charges on the chargemaster.

Loading 223 is a lot more of a ballache, they have to be spot on right and I can't afford a very fine scale. so I throw, weigh on the CM's scale and then weigh again on my RCBS 505. Both scales need to agree before powder goes into case. And even then, it's still not amazing.

I think the answer lies with brass, not with powder charge tbh. 0.2gr does that to my 223, which is why I need to be more accurate, but in 308, all was pretty well. I shot Stickledown last weekend in the rain. Before my rifle was wet the elevation plot was around a half-minute at 900 yards, I used H4895 and also IMR4320 because I'd run out of 4895. At 1000, my elevation was similarly consistent until the water overwhelmed my best efforts, and then pressures spiked and it was less good. However, on a TR V-bull, it was still in there all the time. Wind changed at the very end and threw a few right. but they were still OK for elevation.

So I think that you're barking up the wrong tree with the elevation issues.

Hi all

I understand the views that I maybe barking up trees etc feel that but the following information / facts are known to me

1. BALLISTIC
Ballistic program shows 50 fps makes 1.25 moa difference at 1000
The actual chrono'ing and precise measurement of powders of my loads shows 50 fps difference for my powder gun case bullet combo
My equipment has a known variance of 0.2 - and it aligns with some of the discrepancy at 1000 yards

So I will strive to remove that variance - then I know it is me the baboon on the butt that is the problem therefter
I am just trying to remove the variables i can so that i can assess own contribution to cause and affect as clearly as possible

2. V-BULL
With a 5" v-bull at 1000 yards WIND is already the dominant factor - with its own elevation contributions
I need to remove the ammo based elevation changes - then the shooter based - including learning the wind based changes!

So i will bark up this tree - chop it down - burn it and then find something else to blame later!
:cheers:

We think the following gunslinger's adage sums it up best, ooman:

"Speed is fine, but accuracy is final"