I've never had a problem with it, except for how dirty it made my guns. Never noticed any difference in recoil compared to other target ammo. I don't use it anymore, though, as I started reloading, so I spend a few more bucks to get brass cased ammo so I can reuse the casings.
I have had a problem with Monarch ammo before. 1 box I had felt like there was no power in the ammo... then I heard a *poomf*, halfway through the box. I had squib load. I got the projectile out and got rid of that Monarch crap.
I'm sure it had to do with a production lot, or even just a few boxes. As I've heard good things about Monarch ammo. Just like Federal had a bad batch of .45 recently, I'm willing to bet Monarch had a bad batch of ammo as well.
Most likely, you just got a bad batch of TulAmmo, because I, and many others I know, never had an issue like your describing. Watch out for squib loads when shooting ammo that "doesn't feel right". That's a boom waiting to happen if you don't catch it. Listen for the *Pooomf*. If it's dramatically reduced recoil like your feeling, I would call customer service and give them the serial/lot number of the box and let them know. I wouldn't shoot any more of that box.