I'm having a hard time trying to find load data for the grenades.  I have a model 70 sporter varmint.  I think the twist is likely 1-12.  The powder I have on hand are imr 4320, 4895 and H380.  If anyone has any loads that they are willing to share, that would be great.  I am also going to load some 52gr speer boat tail match bullets, so if anyone has any pet loads for these I would be grateful for the info.  
Thanks, 
Good Hunting,
Swamp