Zero Change with DA change

[goinghunting]

So if I Zero my 300 WSM here in MN in 20 deg F with a DA around -600, then go to MT elk hunting and am in position to take a shot where it's 38 deg F and DA about 4800 does my actual true zero change?

Am I over thinking this?

 

[goinghunting]

I'm under the assumption that with 200yd zero the change even from said -600 to +4800 DA it will be minimal at 200 yards. But the significant change out at farther yardages, 7-800 for example.

 

[PinesAndProjectiles]

Download the free version of Strelok and input your data. Shooting my 6.5 Creedmoor, there is no change at 200 yards. At 600 yards, I have 3/10ths of a mil difference. YMMV.