That's kinda how I feel about the 300 and going heavier, but then again I've never tried a 250 grain LBT.
The 300 grain does increase recoil. I thought it was uncomfortable to shoot them and was going to A: Get a Redhawk. I find the recoil characteristics more comfortable. B: Try some 250 LBTs, maybe hold them at 1200 fps, or C: Try some different grips.
I don't care for Pachmayer grips but saw someone post about some extended grips that also filled the hand better, so I tried them. What a difference! I ended up keeping the SBH and leaving the load alone.
I still want to try some 250s, though.