44AMP didn’t feel there was any difference in the circumstance presented to affect a choice.
No, 44AMP asked if
you thought it would make a significant difference...
You give us two bullet weights, general construction and speeds. First point is the speed difference. Approximately 60fps. This is NOT a very significant amount. 60fps can be the difference between shooting the same ammo from two different guns with the same barrel length. Often the difference is less but I have seen it both less and greater with different guns. I have seen 100fps difference between 3 different 6" barrel guns, and I have even seen a 4" shoot a few fps faster than an 8". Not common, but does happen, once in a while.
Next point, the 125JHP. Hollowpoints do get a significant increase in their wounding capacity WHEN THEY EXPAND RELIABLY...
Does your 125gr JHP do that, at the speed you gave us??
Many designs will not be reliable performers at the relatively low speed you have. Some MIGHT be. but unless you test them, you're really just guessing.
The heavier SWC has greater momentum, which normally yields more penetration than bullets with lower momentum. Does that matter? Possibly.
In order to work, a bullet has to get in to where it needs to go. Personally, I prefer bullets that will not only get there, but go through.
There is a distinction that should be made between measurable differences and significant differences. When you are talking multiple hundreds of difference, be it energy or velocity numbers, multiple hundreds is usually something significant.
Less than 100 difference is measurable, but seldom significant.
More important than either bullet or speed is where the hits. Where it hits is entirely under your control.