RAW Rapid Polygon Vs Standard Rifling for Slugs??

[Quickoz]

G'day all,

Whats everyone found is best for slugs in 22cal? Polygon or standard rifling? I have RAW HM1000X .22cal that I use for WRABF 50m Unlimited Air and the current barrel is very hit n miss so considering a new barrel to replace it.

Yes Ive tried pellets, etc and everything throws crazy wierd flyers even in nil wind conditions.

Thanks in advance.

 

[Ranchibi]

I have an older smaller breech RAW HM1000x LRT .22 Chassis with a LW non choked polygonal barrel that shoots both JSB pellets (18gr @ 970fps) and NSA slugs (17.5gr @ 950fps) same tune equally accurately. Here is a pic of a ground squirrel permission a friend and I went to, shots were 40-100yds I was shooting the NSA. Here is a 1 shot first shot pic shot @ 20yds NSA. I have heard the .22 cut rifle barrels in .22 are fantastic with pellets not so much with slugs but the .177 shoots both incredibly well for some reason. Have you shot it over a chrony, barrel clean? That may help with inconsistencies. I also had my barrel professionally polished. I hope you get this sorted out as these are fantastic PCP's. Call Martin and ask his advice.

 

[Quickoz]

Its consistant over the chrony. Very consistant. I clean it every bottle fill.

 

[Ranchibi]

Then definitely call Martin! I send mine to him for services, I just send it in with what I want done written on paper with a shipping address plus phone number then I get a text to pay for services! I do call him first but I don't think that's needed. He doesn't charge much either, very reasonable.

 

[Quickoz]

Id love to but Im in australia. Haha. Or I would have had one built by him.

 

[Motorhead]

My testing and shooting with slugs ... Conventional rifling, no choke have provided the best results.
When Poly is working with a projectile it likes it is a fine thing !!! ... when the mix of barrel & projectile are in conflict there horrid IMO.
Overall had limited success with poly barrels in general.

 

[Quickoz]

My testing and shooting with slugs ... Conventional rifling, no choke have provided the best results.
When Poly is working with a projectile it likes it is a fine thing !!! ... when the mix of barrel & projectile are in conflict there horrid IMO.
Overall had limited success with poly barrels in general.

Thanks for that info mate. So safe bet go standard rifling. I was thinking that myself but wanted to see what the experts said.

 

[airgunmike56]

I think we are on the tip of the iceberg with slugs , I also think we need to come up with slug barrels and pellet barrels , I do not think there is a barrel that does both perfect, And we are after perfect, Not just OK, I really look forward to the day I can buy a slug gun/ Barrel, Not a pellet gun but a real slug gun made to shoot slugs 100% of the time ,,,
Mike

 

[Ranchibi]

Oh man....Australia! That is far away from Martin.... I do hope you get things sorted out with your RAW whether a new barrel or other....

 

[Ranchibi]

Also check the crown and leade....maybe a gun smith can smooth any imperfections out.

 

[thomasair]

LW polys are very good with slugs. The 1:17.7 twist is good with up to about a .430" long.