What .25 slug for no choke 1:22 twist?

Not an ideal slug barrel, but its a hammer with 34gr mk2 pellets. Its a tj barrel and Ive tried fx 26gr with zero luck. Round holes in the target at 100 yards but its like a shotgun. Anyone using this barrel and slugs?
You need to slug your barrel to see what size slug you'll need to use.
 
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I have 3 TJ 1-22" barrels.
They will shoot slugs, but not too well at slow/low power levels.
Under 90 FtLb or about 940 FPS usually not to good.
Crazy as it is a .2475" 50.4gr. @ 940-950 FPS shoots MOA or better out of of my 30" barrel.
The 48.8gr. Scout type slug just might work.
Oh wow didnt think they would even be stable. I’ll play around some more.
 
The under sized slug is an oddity obviously.
So on a more typical slug -
I shot a 38gr. .250" 2S shallow HB slug @ 940 FPS for a long time out of a 24" barrel.
I bought a Corbin swaging setup to make the 38gr.

That barrel was made to shoot the Wicked Monster slug from 10-12 years ago
it was the best shooting slugs from the early days of slug shooting, that barrel
also shot a pellet OK from what I remember
That was when Micheal Hossack explained how it was an idea twist rate to shoot both in the Yellow forum.
Of coarse those were 31gr. and 37gr. Rat Sniper slugs I got from him back then.
Not like sending a 50gr. or 60gr. chunck of lead like were doing now.

That 24" barrel's leade was literally cut to fit Micheal's 37gr. slug.
 
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