Yeah, I’d call the effect on Total T significant. That’s what’s funny about guys bumping up their T dose (see here for example) 
while on oxandrolone/similar. Depending on the SHBG impact, they may be just flushing all that extra exogenous Test in the toilet :-). It’s also what makes @iron_yuppie 's thread on orals at the tail end of a Test cycle even smarter than he thinks it is. Taking the oral at the end will decrease the time for your TT to come back down (again for guys with baseline reasonable SHBG) and then start PCT, etc.
Cheers guys! Take care of yourselves.