Just one shot...

I have been dying to shoot my new Texan .457, but snow and cold have prevented it. So today I decided just one shot in the back yard .This is really too much gun for my back yard, but no one was around and I did it. Set up a bunch of 2 X 4's at about 60 feet and screwed on the DonnyFL Emperor V3 with the extension. I fired one JSB XXL pellet at low power over the chronograph. Got 668 fps. The pellet went completely through 2 boards and came to rest against the third. Nice mushroom effect. Pretty darn quiet by the way.

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Nice rig. I’ve wanted a powerhouse like that for a while! To shorten it, you could thread one of the forward baffles, attach it to the muzzle up there and then drill out the other baffles so Air could travel rearward. There would be one large expansion chamber at the front and then most gassed would travel toward the rear instead of out the muzzle. It would shorten the overall length by 1/2-2/3 and still perform well...I’m guessing. Not an engineer but it seems plausible? What do you think STO?
 
Awesome!! 

Glad to see that you got to play around a bit with your .457 
That thing is no joke!

BTW, I finally got the correct rear adapter/cap for my Extender.. 
Same setup - Emperor V3 Extended.

Unfortunately, that combo on a small-bore setup didn't work well.. 
I think the added chamber caused internal terbulance, 
making pellets go all over the place.. No clipping, just not predictable at all..
Bummer.. Hopefully it'll work with the .25 setup that I actually intended using it on..

*Fingers Crossed*

🙂 

Sam -

 
Nice rig. I’ve wanted a powerhouse like that for a while! To shorten it, you could thread one of the forward baffles, attach it to the muzzle up there and then drill out the other baffles so Air could travel rearward. There would be one large expansion chamber at the front and then most gassed would travel toward the rear instead of out the muzzle. It would shorten the overall length by 1/2-2/3 and still perform well...I’m guessing. Not an engineer but it seems plausible? What do you think STO?

I honestly don't have any real notable experience with big bores, so I'm mostly guessing based off PBs of comparable velocity and kinetic energy. You're on the money looking for reflex volume to cut how much length you need to add up front. My personal thought was to do it more along the lines of the TexanSS where the shroud mates with the front of the receiver and (presumably) uses the inside of the receiver for reflex volume as well. If you're going to lug around a big aluminum tube chassis, you might as well use it for something eh? Have to also cut mass where you can, particularly on a boomstick that long. *shrug* Muzzling that thing for nearby-neighbor quiet would be quite a project, lots of custom parts to fabricate. Not sure quite what you'd end up with, particularly if you wanted to run at full power..... which lets be honest, thats what the point of the Texan is right?



The other problem you'll have is making a target quiet enough to eat the pellet without also drawing attention. ;) 
 
24 to 38 gallon plastic tub filled with landscaping rubber mulch rubber mulch will stop anything a regular Texan will shoot (you need about minimum 14" for 350gr high penetrating solids). Couple of screws through the lid to hold it down and tip it up to shoot through the lid... and most of us put a board or old election coroplast sign in front to attach targets to.