OUCH!!!!!Guys have broken 30s in their penis for trimix before.
I would just get 27s for IM test so it doesn’t take 2min to load.
Needle is unlikely to break though but it is possible. I wouldn’t use a 30 for test. Guys have broken 30s in their penis for trimix before.
I load my 1ml syringe with a 20G, and inject with a 30G X 1". Been doing that for almost a year with zero problems into the quads. I'm a low SHBG guy, so I'm only pushing .10ml every day. It takes me about 20 seconds to push in .10, but I'm not pushing crazy hard, because I don't want my thumb to slip off the plunger.
I'm pretty careful not to slip, so I just push it in slow and steady. The only experance I've ever had damaging 30G needles is pushing them into the rubber on the bottle. I never broke one, but twice I've bent Easy Touch insulan 30G X 1/2" going into the bottle for HCG. I still used them with no problems.
I go subQ with 30g 5/16", it is fine with grapeseed oil as a carrier, I suspect cottonseed would do better with 29-27g. And I have used 30g 1/2" shallow IM just fine as well. If you are steady and paying attention, I see no reason why you would break off the needle. If you are a nervous wreck, drunk, have serious tremor or whatever, I could see the possibility.
I would not try 30g at 1" though. Didn't even know they exist!
If you have a hefty fat layer 1" could be warranted. If not 1/2" can work for shallow IM in many locations.
He is not using an insulin syringe with a fixed needle as 27-31 gauge insulin syringes do not come in a needle length longer than 1/2 inch (12.7 mm) simply because they are meant for injecting insulin and a needle length any longer would never be needed!
If anything he would be using a syringe needle tip attachment 30 gauge 1 inch.