So far I've used pharmaceutical grade 200mg/mL t-cyp for trt and Geneza t-cyp 250mg/mL and blasts I shoot almost exclusively into my quads with 30g 1-1/2" 3mL syringes. I sometimes am aware of the injection site and my gluteus might be a little sore for a couple of hours - but I think this is mostly a volume issue when I'm blasting (on cycle).
Here's my advice:
1. pin after a shower, your skin is clean and warm and more pliable.
2. make sure you're using a new needle, backfill all your syringes using one needle to get the gear then place all the unused needles back onto the syringes.
3. you need to push the needle in quickly and push it till you dimple your skin, aspirate then push the product, not sure if your 1" needle is long enough? I've only ever used 1-1/2" in my glutes.
Hope this helps.