[HollowpointHank]

That does seem strange. When reading about guns being tested, I see that sometimes the heavier loads that you would think would travel faster, actually go slower. I can't make sense of some of these things!

 

[uudl]

Allthough I have never chronographed the Federal load I would expect the Federal Hydra Shock to be quite a bit hotter. I have Chrongraphed the WWB 165 gr FMJ load at 1022 FPS out of a 4" barrel which is about the mildest factory load for this weight of bullet I have Chronographed. The only way I could explain the slight mushrooming of the FMJ is that it must have a very thin jacket. I have chronographed other brands of 135 gr ammo and the velocity is usually up about 1300 FPS or more.

 

[P95Carry]

Assuming the book was dry then - a JHP would not achieve any expansion for hydraulic reasons and - it is obviously hot enough to just penetrate. Even maybe the ''cookie-cutter'' aspect could have helped it drill thru.

The FMJ certainly as uudl said - could have a pretty thin jacket and once it impacted, upset could have been rapid and so once lead core exposed at all - it mushroomed - purely for reasons of distortion.

A seemingly odd result but on reflection maybe not too surprising.

 

[rocky]

I would guess the Hydra shock would be loaded "hotter" , and with a lighter bullet would have a higher velocity.

 

[Kentucky]

Assuming the book was dry then - a JHP would not achieve any expansion for hydraulic reasons

The book was dry but i would'a thought that the Fed. would have filled with enough paper to expand it but like the bullet is called.." Hydra Shok", it probably like you said needed a "Hydraulic " aspect to perform. One other thing, The boxes of WWB .40 S&W's I have bought for the past year or so (Walmart) , were FMJ's that look as if they are BRASS jacketed or at least plated ? rather than copper and the box I just bought yesterday, for the first time, were definitely copper jacketed. The jacket was fairly thick as where it split soom after mushrooming, it was thick enough where I couldn't 'peel' it any with my thumb nail !
Thanks for the inputs guys !!!!!