What a sad collection of misfits and know-it-alls we see here. Maximum hypertrophy training can be dangerous for older men with decades of experience. Few of us can do heavy bench presses because of soreness in the shoulders. Sore elbows add to the weak links in the body.
I exceeded my previous maximum arm size last month. Imagine how good that made me feel. I already mentioned that my elbows were tender from soreness through doing very heavy pullovers way back in 1965. My elbows were sore for about 6 months and have been tender ever since. I have been careful this time but exceptional size requires an exceptional effort. I will resume training but proceed slower re adding resistance.
I have proven once again that significant growth is possible at my age so my experiment has been a success. The flotsam is too dense to appreciate my accomplishment.
Vince, with all respect, a few things:
1. Jetsam, flotsam, jizzum and scatum aside, you didn't actually prove anything. You say you made X amount of progress and offered a couple of photos, but that is actually less "proof" than Jones offered in the Colorado "Experiment."
2. You're committing the fallacy of Goal-Post Moving. Earlier on, you said maximal growth is possible regardless of age. There's a difference between maximal and significant.
3. How do you know you exceeded your previous best arm size with the "safety fat" you carry? You didn't have that fat at your biggest decades ago. That greatly skews measurement-based results ... when I was 16 and came off a hard diet, I was 171 pounds and quite lean after a week of eating everything in sight, not training and sleeping more than usual. I think my arms were about 16.25 or a little more. gH15 would probably say I was on something

Under Mentzer's influence, I decided more of the same was in order; i.e., tons upon tons of food and even less training. Within a few months, I was 190 pounds and I had 17" arms. But I was not much stronger and my abs and definition were long-gone. I slowly dieted back down to 175, really trained my ass off, got a lot stronger, and found my fatter 17" arm was now barely 16.5" :\
Arthur Jones said you "can't flex fat." No, but take a bodybuilder with 18" arms and low bodyfat and add 200 lbs. of adipose tissue to him, he'll probably have 26" blubbery arms.
I'm happy for you if you honestly feel you set a milestone, especially at your age, but I do hope that, while you're blasting any naysayers, you realize where some of them are coming from. A bunch are just contentious, stupid assholes who think it's fun to pick on other people, but I suss just as many had the things I noted in the backs of their minds when they flamed you.
Besides, you know the lay of the land here

There are times I find it too Wild West-like, but at least it's not dominated by a cult mentality like you might find at most other sites (intensemuscle = Dante worshipers, Ironage = anyone after Haney sucks, yet other sites = MadCow 5x5 or piss off, etc., etc.). I happen to like Dante, Ironage and MadCow's stuff, but frontier town Getbig is one of the few places in which you can comment on all of them without a jacked-up moderator stifling the discussion.
Hope your triceps heals.