A friend of mine on line Long Windy Road (LWRoad is channel name) on uTube posted a video Sunday I think shooting some Buffalo Bore and Underwood Hard Cast 40 S&W 200g loads!!
He didnt quite get advertised ballistics. I dont shoot factory, but I have 200g Molds and cast some for a test!  Using Power Pistol and starting just over a starting load and topping 1tenth over max, I bested 1000 fps a number of times. I saw ZERO pressure signs and will load more of these for accuracy testing later.

https://youtu.be/qYP16iAeWS8

I know that the short and sweet has largely grown out of favor of many folks over the years, but I still enjoy shooting an old xd40 that I have occasionally.

I have some light loads that are smoking out of the 5" barrel.  Way too hot for normal consumption for sure.

I had a second go at this and achieved a 1019 average.

https://youtu.be/HZ6gNfW6yt8

CW

CW With the Double Tap pull down this is what DT loaded but had seen some pressure>

Double Tap 200 gr WNFP Hard Cast Gas Check (supplied by  MT10mm)
Ballistics Information: 40S&W
Muzzle Velocity: 1050 fps
Muzzle Energy: 489 ft. lbs
Brass Make/Headstamp: Double Tap DT ? Nickel
Bullet Make/Weight/Construction/Info; Length 0.6550?/0.6425? Dia. 0.3995?: 200 gr. WNFP GC
MEPLAT 0.3215?   *(the portion of the bullet ahead of the cannelure is 0.4015?)
Actual weight 199.2/197.0 grains (copper gas check flat base) cannelure line 0.3870?
C.O.A.L.: 1.1190? / 1.1195?
Primer: Brass color
Case: Diameter 0.4205? Crimp Diameter 0.4195? (light) Length 0.8480?/08475?
Powder Description/Positive ID/Type/Charge Weight:  LongShot  6.2 grains *
Both cartridges? charges weight exactly 6.2 grains

The empty case supplied with the loaded rounds shows a very slight ?SMILE?
Case expansion at the ?SMILE? area 0.4360? with a smooth bulge all the way around @ 0.4350?

CW thanks for the video and testing results!
Never got to do any Underwood or Buffalo Bore 40S&W pull down documentations 

My Alliant data from 2006 shows the 200 grain FMJ over 6.3 grains of Power Pistol, COL 1.1300" at 960 fps with a pressure value of 33,700 PSI
My Lyman data for the RCBS cast 200 grain SWC with 6.1 grains of Power Pistol at 989 fps, COL 1.1350" with a pressure value of 22,700 CUP

Good deal man!!  Thank you very much!

I have used longshot in the past but it became hard to locate so I stopped using it saving mine for shotgun slugs. But mow its been popping up and I grabbed a couple pounds so 8 will try it again. But I am really really liking power pistol!!   Im gonna try some @ 6.5 next.

CW

Because I haven't been feeling well, I have been perusing the forum and resurrecting some older threads. Has anyone been firing these from their PCC? I have a Sub 2000 that eats everything I load in it with very good results. I always considered these 200 grain hard cast but the only other .40 I have is a G27. I don't want to shoot those through that.