Right. As long as the die bodies don't have to be backed out to the point enough threads are not engaged by the die in the press, you are good to go. To test this, take a resized 44 mag case and put it in the shell holder and run it to the top of the stroke. While it sits there, turn the die in until you feel the crimp shoulder meet the mouth of the resized case. Look at how many turns of the press threads are engaged. If you are missing a turn, that's not really a problem. If you are hanging on by just one turn, it will be hard to seat straight. This is a judgement call.
If you shoot the magnum with heavy loads in a revolver, I recommend investing in one of the Redding Profile Crimp dies for that chambering anyway. It lets you make a heavy crimp without allowing the sides of the case to bulge outward, which is a common problem that limits how hard you can crimp in a conventional die.
On the sizing die, you can probably just measure a 44 case and lock your caliper to that length and then see if the back end of the beam can touch the sizing ring before the depth stem runs into the end of the interior space.
