What should my Texan be shooting?

[scallen2112]

I have been shooting the Texan .457 Carbine CF for a couple of years. Love it for stalking hogs in the thick stuff. But I decided that I wanted to maybe reach out a little further for stand and blind hunting, so I purchased a new, full-sized Texan .457 CF. Got it sighted in and over a chronograph today and I am only coming up with 855 fps with my 350 grain boat-tails by NSA. May carbine is in the 790s with this slug, so I was expecting a bit more than that out of the full-sized Texan. What are other people getting out of theirs? I have the hammer spring adjustment on full, if that matters.

 

[Dave_lee]

My SS carbine shoots 811 My LSS does 875 with NSA 350

 

[durbs75]

Have you tuned your rifle? You’re on the bottom end of the typical range. I shot the nsa 350 on avg 895 fps after fine tuning, bone stock .457 CF TX2

 

[scallen2112]

Have you tuned your rifle? You’re on the bottom end of the typical range. I shot the nsa 350 on avg 895 fps after fine tuning, bone stock .457 CF TX2

Where did you have your power ring (or whatever they call it) set? I looked and mine was turned all the way up, so I just left it there. It would seem counterintuitive that turning it down would increase the power, but I'm not a mechanical engineer so I'm probably oversimplifying it in my mind.

At my present setting, my first shot with a 3600psi fill is 855, my second is 824. (averaged, but always within just a couple of foot lbs). I am hunting deer and hogs, so power on the first shot or two is more important than having a long string. I rarely take more than one shot out hunting.

 

[Dave_lee]

Shot some more jusr now tried the power wheel the more i turned it toward the muzzel the less velocity Tried the 290 they were at 910

 

[Chickenthief]

Most problems has to do with improper barrel cleanness and the lack of proper lube!
My .50 Texan has shot way more than 500 shots and all i had to do is drag a borensake though it for every 100 shots.
I lube my airpower slugs as i lube my powder burner slugs. No leading what so ever and the upside i usually get a faster V0.

Understand this:
Shooting big bore airguns is nothing at all like shooting pellet guns!
Another whole set of rules.

 

[gendoc]

sounds like OP needs to contact AF and ask that question.
i had mine performanced tuned by Doug Nobel and it
produced 630FPE with 405gr RNFP my cast slugs accurately @ 837FPS

 

[scallen2112]

Played with the power wheel yesterday and got the first shot up to 878 and the second to 842. It now moved from the wide open down to almost the second line. Not sure why turning it down increases the power, but whatever works.

 

[Chickenthief]

Lighter bullets need less air to fill the tube before the bullet exits.
Tha harder your power wheel is turned the more "your beer burps".

 

[air gunny]

My lss is getting 959fps with neal 290 gn fireball and with the carbine I'm getting 846 fps with Mr. Hollow point 300 grain. Both rifles set at 3500 psi.my carbine took a 200 pound axis at 85 yards using the mr. Hollow point. And a 85 pound using Tim davis 330 green goblin at 100 yards.

 

[jland48]

The lighter the slugs I try to shoot in my Texan the less air I can put in the tank. A 220 gr. neilsen won't shoot to speed unless the tank pressure is at 3000. I guess I could be turning my power wheel down to compensate for this, but I just put less air and do it that way. Shot count remains at about 4.