Oxymetholone is without a doubt the strongest and most visibly active steroid to date. Not only does it act very rapidly, it causes a virtual explosion of mass. Gains of up to 10 pounds in 2 weeks are not uncommon. This is largely due to a moderate to low androgenic effect combined with a high anabolic activity also mediated by non-AR mechanisms (mechanisms other than simply binding the androgen receptor). You can imagine that the gains made on oxymetholone aren't the leanest. You would note a drastic smoothing out of the muscle due to estrogen-related fat (lipolysis) and water retention. This lipolysis has been shown to be rather drastic. One study1 on long-term hemodialysis patients showed beyond a doubt the role that oxymetholone can play in causing hyperlipedemia. The fat deposition rate, post-hepatic (after processing by the liver), increased drastically in the oxymetholone group while numbers remained stable in the control group.
Oxymetholone 50 Tablets however produces water retention so a good portion of this weight will be water weight however this might not be significant to you as you will look big and strong. The benefit is that this smooth muscle can add to the size and strength gained. Your muscle is fuller, will contract better and you get protection in the form of the extra water added. This will allow for more elasticity and will hopefully decrease the chance for injury when lifting heavy. It should also however be noted to go careful and not place too much strain on your connective tissues as you do not want to tear your pectoral or biceps tissues as there can be such a thing as gaining too fast.