If you went from 24gr Varget to max 26 gr in one hole @ 100 yds, that is not a helpfull ladder test.

I have the same rifle and ladder tested to get the best load also. 24.2 varget for 75gr and 25.8 varget for 69 SMK, .015 jump, win brass, CCI BR4 primers all done at 400+ yds.

I would suggest no shorter than 200yds, 300yds is better. You need the distance to see the vertical stringing stop and a horizontal pattern begin then a vertical stringing pattern again when that happens nearest the highest powder charge prior to pressure signs, that is you load. Then tweek seating to dial in.

If you remove the brake that load will no longer be the exact sweet spot.