When I was doing test/deca, it was sore too. No pain with just test for me. It was never anything debilitating or anything, just a little tender at the injection site.
When I consider an area "sore" for me it means the inject has made a knot in the glute. It is tender to the touch and a little uncomfy when sitting in certain positions. Some things which have helped with the knots for me include warming the oil in a bowl of hot water prior to injection, riding my bike and working legs and squats tend to help me get rid of the soreness. Also hot - I mean hot - baths can ease the discomfort for me as well.
I experience this with QV Prop & QV Deca most often. I usually prefer human grade gear, but for the price QV is hard to beat on some things.