WL, remember that the Speer Hot Core is similar to but not the same as bonded core bullets.
It's old school tech, and it works best with loads developed for the velocities they were designed to stand up well at, as well as being acceptably accurate for hunting purposes.
My 270win shoots these bullets well. I built it on a Rem700 LA with a Shilen 1-9 twist rate barrel.
The reamer was ordered with a longer than SAAMI spec throat, to be able load heavier bullets, 150+ out further, so as not to impede powder space.
IMR4350 is a great powder for this cartridge, but the other you might want to consider, just because it gives slightly slower velocities and very consistent accuracy, is H100V, which, for now at least, is readily available in Canada. I believe it's actually made in Australia and marketed under a Hodgdon label in North America.
My go to IMR4350 load is 55.0 grains over CCI250 primers. I find that magnum primers work best under all conditions in Canada. I get appx 2900fps with the 130gr Hot Core from a 23 inch bbl.
The H100V load is identical, but about 50fps slower. Accuracy is better, and it performs very well on game up to large Deer and Bears.
You may have some initial accuracy issues with that FWT. The last two I owned had sloppy inletting, and they both needed to be glass bedded.