What's the best barrel?

Me too...

My 12 groove LW shoots slugs no problems. I think it has more to do with twist rates, fps and most importantly the lead in of the barrel. The smoother transition the slug has into the rifling the more accurate it will be. Also my barrel is choked.

No choked barrel is meant to shoot hard cast slugs. It may do it but I doubt you're sizing your slugs, it's shaving off lead & loosing speed or it's too loose to begin with and you're loosing speed from blow-by air. A hard cast bullet shaped slug with the right twist rate for that weight/caliber, needs NO choke. Air guns that spit pellets & shotguns that you want tighter patterns out of need chokes. If any solid projectile (non Diabolo waisted shape) that is consistent from head to tail, and matched to bore, a choke isn't needed.

Yes, it can work. It's not going to be the best. A fellow just said his meant to shoot 44-46 grain .30 has significant drop with cast 65 grain slugs at 75-100 yards. Well,, it's choked, they aren't sized, the barrel is short & set up for 44-46 grain .30 caliber Diabolo pellets. 

Both of LW's barrels, standard rifle cut & polygonal are choked. Polygonal barrels shine if a platform can spit them over 900-950, and I mean a polygonal really shines when pellets are kept right under cracking the barrier. A true Big bore made well will tell you size your ammo, buy a custom mold, and all these guys shooting slugs out of airgun choked barrels wondering why they are OK to 50 but open up at 100. It's not stabilizing that weight. The choke is throwing it off at last minute and slowing it down.

You're asking about best barrel for slugs. Not LW's air gun barrels. TJ Liner will make a custom liner with no blow by and tell you what mold to have made. Extreme big bores can do this. Many guys here can do this by just cutting a choke off and slugging your barrel. If you WANT a LW barrel for slugs, pick the slug, get a mold and call LW. Let's say I'd trust Nielsen specialty ammo or Big bore Bob's ammo more than Air Venturi to be consistent to within 5 thousandths of every projectile you buy. Accuracy is the shooters ability and eliminating all tolerance variables to consistency in everything you do & use, as close as possible. Hence why I now would never spend big bucks without a good regulator installed and set up optimized. 

First off I'm using .177. The slugs NSA makes for this size are softer than JSB pellets. When retrieving shot slugs the rifling if only just engaging the slug. Perhaps my barrel is loose and choke is to but I doubt it. I get consistent resistance pushing a pellet through with a good push needed to get past the choke. So I doubt it's too loose. As I stated I think the issues most guys are having with slugs is the transition, or for lack of a better airgun term head space when the round is loaded. Then this happens again at the choke, another "wall" the round has to get through. Hence my suggestion that a smooth/shaped transition would be ideal for shooting slugs. While this does help to uphold your ideas, it also proves that a choked airgun barrel can, and will shoot slugs as well as a straight liner.

I shot these groups a few months back.

I got some good velocity out of my new S510 XS Ultimate Sporter 22 using NSA 19 and 21 grain slugs. I hope to get to the range this weekend to test for accuracy.

All these is because I want to buy a gun .22 and tune it to over 950 fps with the .25 gr jsb if it works I was thinking to buy a barrel LW polygonal choked or no chocked and than try the slugs. I know many of you are going to say just buy the gun that shoot the slugs but you enjoy more when you make it..

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I have a .22 unchoked LW poly at a machine shop now to get turned to fit my Royale 500, hopefully get it towards the end of next Week. Keep you posted, I get 870 with an 18.5 inch ST barrel, this new one will be 24 inches.

Anyone here know how my redwolf barrel will handle slugs? I keep hearing redesigned. However no testing done with slugs.

I think it was around 110 Euros, I had it ordered from Germany but they have LW Usa too so that of course would be cheaper for you. https://www.lothar-walther.com/gun-barrel-blanks/airgun-barrels/?p=1

The machining of course costs more than the barrel.

All these is because I want to buy a gun .22 and tune it to over 950 fps with the .25 gr jsb if it works I was thinking to buy a barrel LW polygonal choked or no chocked and than try the slugs. I know many of you are going to say just buy the gun that shoot the slugs but you enjoy more when you make it..

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I get it and will enjoy following this post and others about getting your rig shooting slugs well.

I know I should just do a google search but I figured it might be better just to ask slug shooters. Where do I buy slugs? I have a .25 TJ barrel on my gun and I would like to try some. I don't want to make them.

Anyone here know how my redwolf barrel will handle slugs? I keep hearing redesigned. However no testing done with slugs.

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On the Neilson Specialty Ammo website, it says this:

"These have been tested in Daystate factory barrels factory barrels with great success."

Vetmx,

https://nielsenspecialtyammo.com/

I'm hoping these will shoot decently from my new Ultimate Sporter.

I shot this group earlier. NSA 18g slugs at 50yd from a bench. 10 shots. If I had done my part that group would be tighter.