I pin everyday IM with 30 or 31ga needles; I draw the oil with 22ga. I rotate locations daily - right mid delt, left mid delt, right glute, left glute, right lat, left lat, right rear delt, left rear delt, right quad, left quad, and back to mid delt etc etc. I go back and forth on pinning quads - I’ve seen all the abscess videos, and the PIP is usually the worst in the quads because the density of muscle and nerves. Leaving them out, that’s about 6 days between sites, so plenty of time for the muscle to recover.

But I have also heard from sources like Vigorous Steve and the Anabolic Roundtable that there’s no reason to do IM, and you’re just accumulating muscle damage and scar tissue, so I don’t really know. That said, right now I’m pinning a full CC of compounds in the morning so there’s no way that is going SubQ.

Me personally I’m currently running :
Test E 350mgs weekly
Mast E 450mgs weekly
Tren 5-7mg daily
HGH 5iu daily

And taking Anavar @ 50mg daily

For me rotating between delta, quads has created less irritation. I guess the biggest issue I’ve had between Sub Q and IM is my HGH causes me to welt. I’ve fixed that issue by applying Flonase to the injection site post injection. No more welts.