dealing with summer heat

[tate1976]

newbie here.. looks like i hit ejector marks at 60.1 and up using n565 6. 5 prc big horn orgin action. 26in shillen barrel. New adg brass 156 berger. looks like my node might be around the 58.8 to 59.2 area..
is that going to be low enough for the up coming summer heat.. while i do all my shooting in the am and it will be around -90ish by the time im done..

 

[1moaoff]

Need specifics on caliber etc

 

[Supersubes]

You didn’t mention the cartridge. Why not switch to a more stable powder like Reloder 23, H4831, IMR 4955, imr 7977, h1000, etc.

 

[tate1976]

Need specifics on caliber etc

Oops. 6.5 prc using 156 Berger. Big horn orgin action 26in shillen barrel new adg brass

 

[tate1976]

You didn’t mention the cartridge. Why not switch to a more stable powder like Reloder 23, H4831, IMR 4955, imr 7977, h1000, etc.

Just using what I have now. I have rl26 I’ll work up a load with but I’m new to this and don’t have any help. So not sure how far back I need to dial any powder back to deal with the heat.