I have been wanting to try some of the Buffalo Bore .38's and recently picked up a couple boxes. I am shooting the 180 grain .357 Heavy Outdoorsman in my 686's and have been very pleased.
I bought a couple of boxes of the 20C load. A 158 grain soft cast LSWHP with a gas check at 850 fps out of a 2" barrel. It is marked standard pressure, low flash, Non-+P. These things have a monstrous hollow point. I finally got the chance to shoot some of them yesterday.
To say that I was impressed would be an understatement. I shot two five shot groups out of my 442. Both groups came in at about 2" off hand at fifteen yards and about 2" above my point of aim. Perfectly centered up above the bulls eye though. The most accurate load I have tried out of this gun by far and pleasant to shoot compared to some of the other SD stuff I have tried. I am going to pick up a couple more boxes and discontinue testing for this particular gun.
I have tried several of the Buffalo Bore loadings in various calibers and have been impressed with each of them. Nothing bad to say about their ammo besides the cost, but you do get your moneys worth.