DEpends how you response to the two compounds. Also the yoiunger your are the better you will respond compared to your older self. Primo is a compound that is fairly mild but can round out your physique and generally has low side effects. Boldenone is also a fairly mild anabolic that creeps up and will increase red cells in most people. So you should basically get a mixture of the two effects and the result will depend on your genetic predisposition. If yuou're a little high in BF you probably won't see the major effects which should be drier gains with hardening. If you are sensitive to estrogen then adding in test above a replacement dose will probably wash out the effects. Keep your diet tight and control estrogen through nolvadex or careful use of an AI and you will probably like what the combo gives you. If it were me the best way to go into it would be after having the diet tight for 6-8 weeks. Then, for me, it would be 500 primo, 500 EQ and 200 Test C with 20 mg/d Nolvadex. Keep the diet tight for 10 weeks and take 200-250 g protein a day. That would do it for me. I could reasonably gain 8 lbs and drop 3% BF.