Let me add to some of this silliness. What I've learned from playing with different syringes was this - Test Cyp is pretty thick and even a decent size 25g syringe can take awhile to load. Once you get better and understand the pressure in the vial, it becomes easier to extract the Test but sometimes it is still a painfully slow process.
Everyone wants an easy draw and a painless injection. What's the best way to do this?
Use a 18g tip to draw with, swap to a 25g+ tip to inject with. The process becomes so much less tedious when you make that simple change. I can draw the test super quickly, swap the tip in a few seconds, and inject painlessly. I'm currently using 25g but I'll go to a 27g next time as long as they're available and they're cheap.
I think its way too much of a hassle for guys backloading syringes and injecting with 30g syringes sub-q but that's just my opinion. By swapping the tip, you're also eliminating possible contamination issues you'd run into if you're foolish while backloading your syringe.