If you're going to go the accidental death route why not say you were doing some male bonding, drinking and mucking about (or being responsible) with the shotgun, some kind of accident/misfire occurred and a round hit CC. You could sell a partner, initially distraught, turning to a darker emotion. If he has nothing to be angry about because it wasn't Lynns fault, you could say he started saying he had nothing left to live for now, started blaming Lynn for coming over with whiskey and a gun, then said it's your fault she's dead and lunged at me with a knife.
People spiral like that all the time, you could make it take awhile while you desperately tried to help CC bla bla, you'd left your phone at your car so couldn't call police straight away, you were concerned for RH mental state, he appeared catatonic, in shock and CC was beyond help anyway so you opted to stay with RH for a moment, during that time he started to blame you for her death eventually resulting in a physical struggle between you.
Then you're standing there with 2 bodies thinking who the is gonna believe this was all an accident and you make the worst mistake of your life trying to cover it all up.
In fact the part about Russell getting the gun and shooting In the air was so out of sorts with the rest of his story I did wonder if it was a calculated gamble using the big lie theory, pulling out a whopper so large people start doubting their instinct and wonder if it's true.
Connected to front right of the bull bar as seen here (that's your left looking at the photo)
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