Does anyone have any good loads to share with this combo?

I have a Rem. 700 Classic and have been using it up until now with the 225 gr. Sierra or NP but have some 250 gr. Speer slugs that I would like to try. With the 225 gr. I was using 58 gr. of RL-15, which was giving me good accuracy in my rifle.

Thanks for other inputs.