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I don't have milk in my coffee. Sorry fellas. Back to the drawing board.

What about parallax? Could it cause a .8 mil shift in POI? I might not have adjusted the parallax before shooting. Can't remember.

Case length is about the same. i don't have a a way of accurately measuring the shoulder. The 30 cal hole of my hex comparator doesn't fit over fired case necks. I'll see if I can jammy something up...

Zero is 10 mil up from bottom (2 turns x 5 mil p/turn) I think I have 30 mil total elevation so should be in the middle of adjustment range. 22" is short but not that short I think tight bore might...

Just done in JBM. ANything not right with my inputs? Corrections are still out.

Trajectory
Input Data
Manufacturer: Hornady Description: Amax (Litz)
Caliber: 0.264 in Weight: 140.0 gr...

When Abe built my barreled action he said my MAB barrel was very tight. He even had to make a new pilot for the reamer, so that might be why I'm slow also?

R93 it's a customish rifle. Howa action trued with MAB 1:8 22" PTG reamer for SAAMI chamber spec .298NK .088 FB I think Abe set headspace at 1 thou or 2. Will measure fired case length and get back...

My scales are shit really and walk a little but I do re-zero them before each drop of powder. They are always between .2gr out which should be normal for digi scales?? They are Smart Reloader's basic...

Thanks LR. I might take you up on that. I started getting pressure above 42gr for some reason? Only slight ejector marks and a little cratering though. I might have to do a bit more work with the...

Yes, muzzle vo was fudged (2500fps) at 650m to get the correction I used. I was shooting prone off bipod and rear bean bag. Pressure on bipod might not have been consistent,1st Variable. I know baro...

Thanks for the help. Seems like some kind of input error then. Might ask Leathel what the zero range he entered was. Or maybe it is set for POI 1.5" at 100 for one of his rifles?

Zero is...

Is the G7 BC velocity dependant? My scope is a Sightron SIII 3.5-10 Mil/Mil

Wow. That's a lot slower than I would have thought. I did a ladder for Hodgdon Hybrid 100V and got much better results. At 44gr with no pressure signs at all I got high 2700s fps. 150fps faster for 2...

Not sure what the book speed is but I'd imagine I'm slower than it should be. The day was perfect for the chrony too. Nice clear day 24 degrees or so in the middle of a paddock.

The powder used is...

I re-zeroed minutes before the long shots.

Nope. Was definitely meters and I got the same result from home on JBM.

I'm not sure what baro was I think we just guessed? Leathel might remember. Angle was corrected for also at 5 degrees. Chrony used was a master chrony. We were getting pretty repeatable results with...

I did some shooting the other weekend with my .260 Rem and 140gr A-Max combo. From 9 measured shots through the chrony I got an average of 2644fps. Using Litz measured G7 BC of .299 for the A-Max...