I don't know much about the 6.8 but it should be fine. Shoot for the neck. They drop right there and you won't have to track them. It's actually a bigger target than the heart is. Hogs can be extremely hard to track if you don't put them down hard. Bullet wounds close up quick and they don't bleed like a deer does. If your set on a heart shot, the heart is located very low and forward, behind the front shoulder.
As for spices, I usually just use whatever I have in the cabinet. Lots of sage, red pepper, garlic, thyme, etc. I don't really have a recipe, just make it up as I go. The easiest way is to have a frying pan ready when your mixing it. You can fry a little and sample as you go. There's tons of sausage recipes on the net, any will do.
Look for wallows around water. If you find one that's being used, they come to it all day to cool off. If it's cold, you'll have to sit on their food source, whatever that is.
Here are your Oklahoma Hog Hunting regs. Looks like you cannot hunt them at night unless you get a special permit. You should come to Texas, our rules for hogs are simple. Kill them and kill them all, by whatever means possible. Trap, gun, knife, dog, helicopter, plane, run them over, or blow them up. Day or night. /ubbthreads/images/graemlins/smile.gif
Oklahoma Regs
http://www.wildlifedepartment.com/huntregs.htm
HOG (Feral Swine) REGULATIONS
Hog Definition
Hogs are defined as any hogs, including Russian and European wild boar, which are running at large, free-roaming or wild.
Hog Hunting on Private Lands
Hogs may be taken year-round on private land during daylight hours with the landowner’s permission.
Resident & Nonresident License Requirements: No hunting license required, except during youth deer gun, deer muzzleloader, deer gun, holiday antlerless deer gun (in open zones), elk gun (in open counties) and antelope (in open areas) seasons, hunters must possess a filled or unfilled license appropriate for the current season, unless otherwise exempt. A Legacy permit is also required unless exempt.
Landowners may obtain a free hog hunting permit from the local game warden for use during those deer seasons listed above.
Hog Hunting on Public Lands, except Honobia Creek, Three Rivers & Broken Bow WMAs
On WMAs open during any regular hunting season, hunters will be allowed to harvest hogs by whatever means legal during that season. Hunters must comply with all other current season and WMA regulations. However, hogs may not be taken by the aid of a light or light enhancement device (night scope).
Resident & Nonresident License Requirements: All hog hunters must possess a hunting license and a Legacy permit, unless otherwise exempt. In addition, on WMAs open during youth deer gun, deer muzzleloader, deer gun and/or holiday antlerless deer gun seasons, hunters must possess either a filled or unfilled deer license appropriate for the current season, unless otherwise exempt.
Hog Hunting on Three Rivers, Honobia Creek & Broken Bow WMAs
Honobia Creek, Three Rivers and Broken Bow WMAs will only be open to hog hunting during deer archery, youth deer gun, deer muzzleloader and deer gun season, with the appropriate means of take for that deer season. Hunters also must comply with all deer season and WMA regulations, including the required land access permit.
Resident & Nonresident License Requirements: All hog hunters must possess a hunting license and a Legacy permit, unless otherwise exempt. In addition, on WMAs open during youth deer gun, deer muzzleloader, deer gun and/or holiday antlerless deer gun seasons, hunters must possess either a filled or unfilled deer license appropriate for the current season, unless otherwise exempt.
Landowner Depredation Provision
Landowners may obtain a special night-shooting permit from the local game warden to hunt nuisance hogs.
Shooting Hours
One-half hour before official sunrise to one-half hour after official sunset.
Shotgun Pellet Size Restrictions
If hunting hogs with a shotgun, no person in the field may possess or attempt to harvest hogs using shot larger than conventional BB (.180 in. dia.).
Hunter Orange
When youth deer gun, deer muzzleloader, deer gun, holiday antlerless deer gun (in open zones), elk gun (in open counties) and antelope (in open areas) seasons occur, all hog hunters must conspicuously wear either a head covering or an outer garment above the waistline consisting of hunter orange.
Releasing Hogs
No person may willfully release any hog to live in a feral state on public or private lands.