I've hunted pigs all around SLO and neighboring counties for some time. You'll have a blast if its private, nearby or on top of crops like vineyards, barley, etc. Plan your hunt around the new moon, NOT the full moon, and hunt at first light into mid-morning, then evenings until last light. That is, unless you've got dogs then you can bust hogs from their beds during the mid-day.
besides the copper bullets, you'll need a non resident license and non resident tags, which are purchased individually thanks to Arnold. Don't even "possess" any lead bullets or you can get popped. The DFG warden in that area is a real d**k and he does tromp all over private lands across locked gates all summer looking for pig hunters to harrass. The truck is a dark green 4-door chevy with a funny looking short-bed. Shooting a 300RUM I'd advise the 180 TTSX or 180 E-tip with retumbo. The tips really help open up these bullets. Velocity should be a non issue most guys use these same bullets with a 30-06. It will be hot, probably 90+ during the days so load accordingly.
ticks can be an issue if you're in the brush, but not a big deal otherwise. Don't wear white or light color clothing, they are attracted to that. Snakes are a definite issue in summer, especially late afternoons as it cools off, they will be out.
Hogs have a huge vital zone, with big lungs. Most hogs that are visible in daylight hours without dogs, will be under 200 Lbs, which are good eating. Just get them cleaned, skinned and on ice ASAP. Don't put the meat in plastic bags, just right on the ice. Dry ice is even better - all the big grocery stores carry it out here.
I like to use Henry at Arroyo Grande Meat Co for butchering. He does a "wham-bam" cut & wrap for a decent price and decent turnaround in summer unless you get into "Fair" season, when all the local butchers get busy with the local fair livestock.
bring some shooting sticks - there will be tall dry grass everywhere this summer, since we've had such a wet spring. Shooting prone may not be an option.
If you're going to be driving around in 4x4's make sure you have scope covers and maybe a barrel cot - it will get dusty because it never rains in summer here. Use the spray-on sunblock, the lotions get nasty in hot dusty conditions - yuck. In summer time you can find these handkerchiefs with absorbent beads in them, that you soak in ice water and then tie around your neck to keep cool. Most big grocery stores have them locally.
funny thing about hogs, they are always on the move especially during daylight hours. They're usually in groups of all different sizes, which makes it tough to judge their size. Most often, there will be a couple big ones up front and a couple big ones bringing up the rear, with the mid-size and piglets in the middle.
that's enough for now; good luck and shoot the ugliest one you see.