Ken it seems ok never had any real problems should only be 36 saturday 25 on sunday for comp shoot Im running 2206h in my 308 and 2208 in the 223 your varget and H4895.
If its 40 or so I just shoot my sting slow and never put a round in the chamber until im ready to let one go.
I went and fouled the barrels at 7.30pm this evening it was 47 degrees I had that much sweat the flys were sticking to my face.
If you were running your loads on the ragged edge I think you may start getting some hard bolt lift I myself have found the 2206h least affected by the heat.
Cheers Trev.
