interchangeable powder for 220swift and .243

[500YardHog]

does anyone know of a good temperature resistant powder that would work for a 220swift,55grn @ 3600-3800fps) and also work for a 243 Winchester,75 grn @ 3300-3500 fps) .Varget works in the 243 with the 75 but i have only loaded it for my 22-250 not my swift.Time at my range seems to be harder and harder to find so any suggestions will help.
Thanks.

 

[CatShooter]

VARGET...


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[500YardHog]

That's where my head was ..I guess i just needed to hear someone else say it.Thanks.

 

[Preacher]

Both my Ackley's like RL-15 better than Varget, and gives up a bit more velocity if thats worth anything......

 

[CatShooter]

Yeah, but RL-15 is not very temperature stable, and burns dirty, too.


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[eddyverhoeven]

Vihtavuori N150 and N550

Eddy