rjrivero said:
By definition, recoil is how much energy is pushed back against the gun/shooter when the bullet leaves the barrel.
Technically, it's the amount of momentum imparted to the shooter as opposed to energy, and this change in momentum is known as impulse. Felt or perceived recoil may be a different matter, however, and how it affects one's shooting could be yet another matter. The loads that I had suggested in a previous post were based on low recoil impulse, as well as what I thought would be most effective given the low impulse, of course.
rjrivero said:
However, there is also the muzzle rise which "technically" isn't recoil. (I *believe* this is more related to the bullet velocity than anything else.)
It's a complex combination of a lot of things.
rjrivero said:
The lighter/faster bullets tend to have more "snap" to them, where as the heavier bullets tend to feel less "snappy."
They may have more of a muzzle blast as well, but in my opinion once one gets down to light 9mm bullets, the snappiness doesn't bother most people much, and the lower impulse can be perceived. This does not apply to everybody, though, so some experimentation will be needed. It shouldn't be necessary to experiment with expensive defensive ammo unless you're considering +P loads--just try practice ammo of differing bullet weights until you find what works best for you.
rjrivero said:
Therefore there is less muzzle rise when I shoot the heavier bullets. (Although it does tend to push back a little more, (more true recoil) which I prefer personally.)
The effect will differ between individuals, though. The OP's wife should try out 115 and 147 grain practice ammo to find out what suits her best with regard to recoil and overall shooting performance (and probably 124 grain for good measure). If she discovers that she prefers the lighter weight loads, then I would recommend the aforementioned 115 grain Gold Dot or even the 95 grain DPX if she finds that lighter bullets give her a significant advantage.
On the other hand, if it turns out that she prefers the heavier weight loads (as I do in virtually every caliber), then I would personally recommend any of the following 147 grain defensive loads: Federal HST, Speer Gold Dot, Winchester Ranger (T-series RA9T), or Winchester Ranger Bonded (RA9B, also conveniently available as PDX1 in stores if the online sources dry up). The Ranger T-series (based on the notorious Black Talon, but of higher performance now) is the one with nasty razor-sharp petals, if you're into that sort of thing
, but they're all good loads. I'd go with either of the first two for now because Winchester has been having strange QC issues of late, but those will eventually be resolved I'm sure, and I wanted to give more options from the loads that I'm most familiar with since availability can vary.