I've got heavy grip 150lbs a long time ago, but was never able to close it. Some time ago I've got heavy grip 100lbs and I was able to improve my grip strength to the extend that I'm able to close 150 one after good warmup. I've ordered Captains of Crush 0.5 which is ranked 120 lbs, which should be in the middle.
But then come the surprise. I'm not able to close that thing even to the half (at least when I try with one hand). So now I'm totally confused, because it looks like CoC 0.5 ranked lower that HG 150, is actually much harder...
Is there an explanation for such feeling, or it's just a quality difference? And how should I approach that CoC beast? Doing many reps with HG 100, and then trying to close HG 150 as many times as I can, and first after I'm really confident with it, try to switch to CoC?
I'm able to close HG 100 about 40-50 times. HG 150 5, in best case 10 times. And CoC 0.5 even not up to half - and my finger joints really pain after trying.