Heard some high end air guns use these. Are these barrels unchocked? Heard center cut had issues with heavy Mk2 pellets with this type barrel. How do these differ from LW barrels? Is it just the choke, or twist rate?
Polygonal barrels?
- Thread starter rangur1
- Start date
Polygonal barrels are also made by Lothar Walther. LW makes 12 land and groove barrels with really distinct, sharp and rectangular rifling. The polygonal barrels are also rifled, but much more subtly. The polys that I've handled or own had/have 6 "land and grooves" but I recently I was told that there are also 5 land and groove variants. And land and groove is somewhat of a misnomer with polys because it's really hard to see them-much more gentle.
There are some that feel the less sharp rifling marks engraved on a pellet from the polygonals resist wind deflection more than pellets with sharp impressions made from a "regular" rifled Lothar barrel. I'm one of them, primarily from shooting field target with an exceptional poly barrel.
Both polygonals and traditional 12 land and groove lothar barrels can be purchased choked or unchoked, in various calibers and outer diameters.
The Daystate HP models use polygonal barrels. That tells us how Daystate feels about them, at least for their higher power/faster fps capable guns.
There are some that feel the less sharp rifling marks engraved on a pellet from the polygonals resist wind deflection more than pellets with sharp impressions made from a "regular" rifled Lothar barrel. I'm one of them, primarily from shooting field target with an exceptional poly barrel.
Both polygonals and traditional 12 land and groove lothar barrels can be purchased choked or unchoked, in various calibers and outer diameters.
The Daystate HP models use polygonal barrels. That tells us how Daystate feels about them, at least for their higher power/faster fps capable guns.
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All my poly 25 barrels prefer Mk2s.... and that is several. The typical poly's from LW are 1 in 17 twist across all the calibers. The ART poly's are 25 and 30 caliber are slower twist. The Prophet LR 22 is also a slower twist poly.
CC's MK2 issue is likely batch related as LW's are typically very consistent but if it prefers the real King Heavies, that's a GOOD thing. They're the highest bc of all the JSB pellets, and through a poly barrel, even better.
Bob
CC's MK2 issue is likely batch related as LW's are typically very consistent but if it prefers the real King Heavies, that's a GOOD thing. They're the highest bc of all the JSB pellets, and through a poly barrel, even better.
Bob
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Glock uses polygonal barrel and says not to use “lead” reloads or lead ammo cuz it will fill rifling.
Not a fan of Glock or type of barrel.
I reload and gun is over priced for what they are selling.
Not a fan of Glock or type of barrel.
I reload and gun is over priced for what they are selling. Upvote 0
Thanks. I don’t have enough of a number of .25 to say generally, but you know your stuff no doubt. With both my Delta Wolf and Cricket2 the accuracy between Mk1 and Mk2 wasn’t even close.. it was blatantly obvious after the first magazine at 50 yards.
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You can check Lothar Walther USA for blank prices but you'll need to add machining to that.
Bob
Bob
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Hmm…
LMAO!!
So you see the poly barrel is like the smooth twist barrels. NO Traditional riffling to foul with lead. All of my HK Rifles have Poly barrels, and I barely need to clean them!
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I would like to get a Poly barrel for my MKII Impact. I'm tired of dealing with this harmonic issues that these thin liners seem to be prone to having.
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I was just testing the MKI and MKII pellets out of the RAW’s poly/uncooked barrel this morning and the difference was night and day. The MKI’s were far superior out of the RAW, I thought it was the other way around but we haven’t shot pellets out of it for so long that I was mistaken.
Mike, if you want some MKI’s, for MKII’s, I have 3 tins coming in the mail that we could trade. They just shipped so I don’t know if they’ll be here before we leave for the weekend. If they get here in time and you want them we can swap when we see each other up there. If not, I can just sell them, no biggie.
Stoti
Mike, if you want some MKI’s, for MKII’s, I have 3 tins coming in the mail that we could trade. They just shipped so I don’t know if they’ll be here before we leave for the weekend. If they get here in time and you want them we can swap when we see each other up there. If not, I can just sell them, no biggie.
Stoti
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Different manufacturers have their own poly type rifling… always seems to be subject on every Reloading forms, Glock forms, and also been a topic on this form before.
Myths and opinions to each caliber, velocity, twist rate and etc.
toku58….you have a dirty barrel lol
could also be given you harmonic issues.
Myths and opinions to each caliber, velocity, twist rate and etc.
toku58….you have a dirty barrel lol
could also be given you harmonic issues.Upvote 0
I would suggest FX's method is a poly profile or extremely close to it.
The carbon sleeves for FX liners will be on the shelf very soon, this may help resolve your issues, if it doesnt you need to consider tensioning the liner rather than compressing it.
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