Hey look colt-saa, I quite enjoy your posts and I don't want to seem as if I'm being argumentative for the sake of being argumentative towards you. You're definitely one of my more favoriter posters here. But you didn't quote my post #8 100% in its entirety at all. I've already highlighted your mistake in my last reply which you may have ignored.
Here is my reply #8 actually quoted 100% in its entirety.
Underwood is loaded on the hot side of SAAMI specs, not this watered down .40 S&W in a 10mm case we see from all the major ammo makers. As for the XTP bullet, it's a legendary bullet design with excellent penetration and expansion, and one of the better high velocity pistol bullets. Very nice weight retention.
I carry Underwood XTPs in all my 10mms.
Here is what you consider quoting this same post 100% in its entirety, which is clearly a paraphrase and an inaccurate one at that because you've replaced the number 1200 with 1250 in regards to Fusion velocity:
You are calling Federal's new 200 grain Fusion load at 1250 FPS a "watered down .40 S&W in a 10mm case"
However you are calling Underwood's 200 grain XTP at 1250 FPS "loaded on the hot side of SAAMI specs"
Nowhere in my post #8 did I make the claim that Federal's new 200 grain Fusion load is listed as 1250FPS, and nowhere in my post #8 did I claim that Federal's new 200 grain Fusion load is a "watered down .40 S&W in a 10mm case." As I've already said, you are paraphrasing my actual claim out of context to make it appear as if I'm making a totally different claim. The first half of your "understanding" is completely wrong.
Hope this provides the clarification you were seeking.
Now as for ProCarryNAustin,
At best it is 50fps at 1200 something. Your argument apparently is due to some personal issue or interest and not on the facts. Stdev between rounds at that pressure could easily be 25fps.
The velocity numbers we are discussing are averages which already take into account standard deviation. The FACT is that 1250FPS average out of a 4.5" barrel is SIGNIFICANTLY more velocity than 1200FPS average out of a 6" barrel, not just 50FPS with a stdev of +/-25FPS. Using the phrase "watered down .40 S&W" may have been somewhat hyperbolic, but the reality is that a lot of leading ammo makers are selling 10mm ammo which is on the very low end of 10mm velocities.
The longer the barrel the more velocity. These numbers are misleading due to different barrel lengths being used to obtain the data. I'm not arguing a personal opinion, I'm arguing actual data. I have nothing against Federal Fusion in fact I exclusively carry 120gr Fusion soft points in my 6.5 Grendel rifle and I love them.
I appreciate both of your comments and mean no ill will towards either of you personally. I love 10mm!!!!!