Poligonal Lothar Walter barrel vs Normal Lothar Walter barrell

[Emu]

Hi, 

Can somebody please tell me if the poligonal Lothar Walter barrel is or not substantially more accurate at longer distances (farther 130 yards) than normal Lothar Walter barrels? 



Does it worth it the investment in such changes? 



Thanks. 

 

[jps2486]

Polygonal barrels work best with heavier pellets pushed tl higher speeds.

 

[Mikepr]

Polygonal barrels work best with heavier pellets pushed tl higher speeds.

If you know

What a good speed for .25, 25.4 gr poly ?

 

[davidsng]

Polygonal barrels work best with heavier pellets pushed tl higher speeds.

Polygonal is smoother on pellets. It's more like a smooth twist. The .22 polygonal barrel is amazing accuracy for Redesigns and those thing are pushed fast, but it is because of the pellet, not the barrels. If you have a 25 poly barrel, it will shoot MKII at 840 great because that is just the speed the pellets shoot best at. That's my understanding.

 

[elh0102]

IMO, other things equal, the poly barrel will give more velocity due to the more complete seal behind the pellet/bullet. But this is at the cost of greater lead fouling. It is a design intended for jacketed bullets, not soft lead pellets. Personally, I would always opt for the cut rifled barrel. 

 

[2L8]

Great question!

I think jps2486 is on to something. No facts to share, just questions.Wondering if heavy pellets or slugs/bullets would benefit from a poly barrel at longer distances?

 

[Spray1Mark]

As above a poly profile imparts less deformation to the skirt, therefore BC etc. are less affected and this can make a difference at long distances, for this reason as also said above pellets need to be pushed faster in a poly barrel in order to impart the same rotational effect as standard rifling would do at lower speeds.

I cant say I have noticed heavier fouling from poly barrels though, except when shooting slugs which is the case when shooting slugs in an barrel type.

 

[Spray1Mark]

Polygonal barrels work best with heavier pellets pushed tl higher speeds.

Polygonal is smoother on pellets. It's more like a smooth twist. The .22 polygonal barrel is amazing accuracy for Redesigns and those thing are pushed fast, but it is because of the pellet, not the barrels. If you have a 25 poly barrel, it will shoot MKII at 840 great because that is just the speed the pellets shoot best at. That's my understanding.

I presume you mean the smooth twist was designed to be closer to a poly profile? I shoot the 34g MKII at 970-980 from my Redwolf & my Impact and it works really well at those speeds.

 

[nomojo65]

Here’s my opinion on this subject, “good, bad, or indifferent”, both poly and 12 groove or traditionally rifled-barrels(land & groove) can be equally accurate, some say that the grooved barrels are more effected by wind or external conditions more? Maybe at long ranges say 100yd. But I haven’t noticed this, ”that I Can truly quantify!” some also say that there’s a better seal at skirt with poly barrels?, maybe? the sharp profile of lands and groove’s of a grooved barrel this seal isn’t as good? Could be? But many variables with both( antimony of the lead in the pellet etc.) I feel the choke takes care of most of these issues? Some say you have to shoot pellets faster thru a poly barrel? I think personally that depends more on profile and weight of the pellet vs. the barrel? In the end both styles can be super accurate or a dud!