Actually, the Lee factory Crimp WON'T COLLAPSE THE SHOULDER
However, if you use a conventional die (part of the seating die), you can collapse the shoulder.
Hence, my STRONG recommendation that you trim all cases before the first loading as many of the factory OFB brass will exceed maximum allowable OAL, and will vary at that.
Lee sells such tools for less than $12.00 for case length gauge, shell holder (packaged together), and the Case spinner and cutter (Only one needed, then for additional cases/calibers, you only need buy the shell holder and length gauge. I even prefer to use the shell holder and spinner when using my Forster Hand Neck turner)
If you have adjusted your STANDARD crimp on a "short" case, and then attempt to crimp a "long" case, YES, then you will likely collapse a shoulder.
The Lee Factory Crimp die is a collet type die that uses the shell holder contacting a sleeve/collet that uses a shoulder within the die to "squeeze" the crimp onto the neck of the case, preventing pushing back the shoulder and collapsing the shoulder.
You should still trim the cases the first time, and monitor the length and trim when they reach max. length. After second trimming and reaching max, TOSS THEM OUT. They will have a head separation before reaching the third trimming.
This also applys to the .22 Hornet, and .32/20.
Don't ask me how I know !!!!
BTW; none of my loads will tax your rifle either, as most are well below the 40,000cup level of factory ammo.