Author Topic: Need ideas for bending a fully shrouded barrel (Read 8211 times))

Anylizer · « **on:** May 07, 2015, 02:26:04 PM »

Long story short, I have a Stoeger X20s, that has a non-removable plastic shroud around the entire barrel. I need to try and bed this barrel, because it shoots 9" low at 10yrds. Compensating scope mounts are a last resort. with this much droop, it will require 1/4" of lift at the rear of the scope. Not even sure I can get mounts with that much compensation in them...

Any how looking for ideas, or what others did to solve this problem!

Thanks
Tim

BenjiHunter · « **Reply #1 on:** May 07, 2015, 02:47:43 PM »

If you just got it, send it back.

Anylizer · « **Reply #2 on:** May 07, 2015, 03:09:24 PM »

Ya, that's not going to happen. I already put a trigger in it. When i talked with them on the phone, they will only verify with the scope that came with it, and it groups 3/4" 7 shot groups @ 30 yrds. with the OE scope. Not sure what they did... but their scope is internally compensated... even mounted on my RWS with near equal droop it was pretty close.
I have mounted 4 other scopes on this rifle, and all come in the same... 9" low 4" left @ 10 yrds. Stoeger doesn't sell just a barrel, only complete guns.

BenjiHunter · « **Reply #3 on:** May 07, 2015, 03:32:43 PM »

Are you sure the barrel is bent?
Maybe the pellet is hitting the shroud on its way out.

Anylizer · « **Reply #4 on:** May 07, 2015, 03:40:30 PM »

yes... i'm sure!! Absolutely, positively, no mind in my doubt!!! It's excellent with the OE scope... just not any others!!!

BenjiHunter · « **Reply #5 on:** May 07, 2015, 03:51:34 PM »

Sorry, Tim, with a plastic shroud you can't remove, I don't know how you can bend the barrel without ruining the shroud.
Others may have better ideas.

Anylizer · « **Reply #6 on:** May 07, 2015, 03:58:25 PM »

Thanks for Trying Benji' appreciate it! Walls every direction I turn! I'm starting to lean towards a custom built scope mount! $$$$

packard8 · « **Reply #7 on:** May 07, 2015, 04:11:47 PM »

Tim,

I had the same problem with 3 different X20S's (refurbs) and the RWS compensating one piece mount solved the issue.

Easy fix and you can get them for $13-$20 on eBay.

http://www.ebay.com/itm/331171232504?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

If interested, email them and ask to supply 1" shims for the rings. They originally had them in 1" now 30mm only. The first ones came in RWS retail packaging, the 30mm version in generic packaging but the identical item.

Same unit from PA (for $30) When you see an orientation arrow on a mount it is droop compensating.

http://www.ebay.com/itm/RWS-Lock-Down-1-Pc-Mount-w-1-Rings-11mm-Dovetail-Barrel-Droop-Compensation-/231425912311

Anylizer · « **Reply #8 on:** May 07, 2015, 04:29:50 PM »

Thanks Packard... I just haven't been able to get solid info on how much lift most compensaters provide. I'm estimating 1/4 " at the rear of the scope. Were your Stoegers that far off?

From the info on the PA site, there is only .025" compensation... thats not even close to enough.
I used a laser bore sighter to guestimate the amount of lift that i need.

packard8 · « **Reply #9 on:** May 07, 2015, 04:42:29 PM »

Quote from: Anylizer on May 07, 2015, 04:29:50 PM

Thanks Packard... I just haven't been able to get solid info on how much lift most compensaters provide. I'm estimating 1/4 " at the rear of the scope. Were your Stoegers that far off?

Pretty much. At 10 yds with a bullseye about 8" above ground the pells were impacting at the ground in front of the target. I think 1/4 " is way too much. The UTG compensating Weaver rail designed for my Diana 48 specs for a 17.1" elevation rise @ 30 yds and the slope is hardly noticeable looking at it.

packard8 · « **Reply #10 on:** May 07, 2015, 05:14:54 PM »

Quote from: Anylizer on May 07, 2015, 04:29:50 PM

From the info on the PA site, there is only .025" compensation... thats not even close to enough.
I used a laser bore sighter to guestimate the amount of lift that i need.

1/4" still seems waaay too much to me. Why not experiment with shimming the bottom of the rear ring 1/4" (just lightly cinch down the scope) and see if that is in the ballpark? It should give you a pretty close estimate, at least for the first shot. Also, how did you use a bore sighter with the X20S? Do you have one that will actually go into the breach and allow you to close the barrel? Looks like just stuffing one into the muzzle of the sound suppressor would not be accurate at all.

Privateer · « **Reply #11 on:** May 07, 2015, 05:21:11 PM »

Quote from: Anylizer on May 07, 2015, 04:29:50 PM

Thanks Packard... I just haven't been able to get solid info on how much lift most compensaters provide. I'm estimating 1/4 " at the rear of the scope. Were your Stoegers that far off?

From the info on the PA site, there is only .025" compensation... thats not even close to enough.
I used a laser bore sighter to guestimate the amount of lift that i need.

Pellets are not flying on a flat plane but on an arc.
I only use 10 yards to get on paper. I move to 20 then around 35 yards to zero.
Any shots under that I hold under.
Over 35? I hold over. I hold over 4.25 mildots to go 75 yards or so.

Anylizer · « **Reply #12 on:** May 07, 2015, 05:39:04 PM »

OK,cool... Jeff... Maybe you (or anybody) can help me figure this out then. If my POI is 9" low @ 10 yrds... what would estimated POI be at 30yrds.... shooting 7.33gr. @ 869fps .17 cal.

Packard... I made an adapter that fit clear into the barrel to hold my muzzle bore sighter. It's not perfect but allows me to get close on original sighting, then dial it in while shooting it.
Additionally, I just found out how to take apart the muzzle end of the shroud. The end cap just screws on, there is a spring and 3 baffles in there. The steel portion of the barrel is about 4" inside the the end of the shroud. I'll post pics if I can.

I also just spoke to "Tim" @ Mac 1 airguns, he said I should be able to bend the barrel no problem.... so guess we'll find out!!! lol he said the plastic actually helps in the adjustment.

Privateer · « **Reply #13 on:** May 07, 2015, 05:44:13 PM »

Get a copy of ChairGun. It's free.

http://www.hawkeoptics.com/chairgun.html

Anylizer · « **Reply #14 on:** May 07, 2015, 05:47:44 PM »

Jeff... I did, just haven't had time to process it yet....

Privateer · « **Reply #15 on:** May 07, 2015, 06:03:22 PM »

I find it weird that the scope that came with the AG is ok but others aren't.
Did you optically check and center the other scopes? Did you use different rings?
What scope came with the AG?

packard8 · « **Reply #16 on:** May 07, 2015, 06:21:05 PM »

Quote from: Anylizer on May 07, 2015, 05:39:04 PM

Packard... I made an adapter that fit clear into the barrel to hold my muzzle bore sighter. It's not perfect but allows me to get close on original sighting, then dial it in while shooting it.
Additionally, I just found out how to take apart the muzzle end of the shroud. The end cap just screws on, there is a spring and 3 baffles in there. The steel portion of the barrel is about 4" inside the the end of the shroud. I'll post pics if I can.

I also just spoke to "Tim" @ Mac 1 airguns, he said I should be able to bend the barrel no problem.... so guess we'll find out!!! lol he said the plastic actually helps in the adjustment.

Interesting, learn something new everyday. I would have thought the plastic shroud would break when bending the barrel.

Privateer · « **Reply #17 on:** May 07, 2015, 06:30:59 PM »

Read that again Mate. He stated the shroud comes off somewhat.

Anylizer · « **Reply #18 on:** May 07, 2015, 06:36:45 PM »

Jeff... lol... same response I got from PA & Stoeger! I optically centered 4 other scopes... 2 UTG/Leapers, 1 Vortex Crossfire, & 1 Leopould. Using the V-notch method. I also used several different sets of rings, and switched them front to rear.( All having the same results) I sent the first UTG back to PA thinking it was bad... when i maxed out the Elevation & windage, only to get within 6" of the bull. The scope that was on the gun, was the Stoeger/China one that came with the gun. It is about 8" long and cannot be moved back far enough on the gun to create a comfortable shooting position.
Stoeger has to have figured out a way to compensate inside the scope. I think that is why it is so short. IMHO.
If I could get pics to post, I could show you the insane amount of droop this barrel has... it is visible to the naked eye, and even worse when using a straightedge for reference. I could see it when i first got the gun, but it zeroed and shot great... I figured it was probably just because of the shroud that it looked funny. I now know different! It is the gun... not the Glass!!

packard8 · « **Reply #19 on:** May 07, 2015, 06:44:12 PM »

Quote from: Jeff aka Privateer on May 07, 2015, 06:30:59 PM

Read that again Mate. He stated the shroud comes off somewhat.

@ Jeff, I read that as Tim is opening the end of the shroud to expose the baffles and the end of barrel. The shroud goes the full length of the barrel and looks like is is heat-welded on. The scope supplied with the package is a Stoeger branded 4X32 illuminated with standard 2 piece mounting rings. Seems to me too that any scope should work with a compensating mount.

@ Tim, I would try the $13 eBay compensating mount before bending the barrel...too many bad case scenarios there...especially if Stoeger says they won't sell you a new one. Your gun, your decision, 'jes sayin'

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Need ideas for bending a fully shrouded barrel

Author Topic: Need ideas for bending a fully shrouded barrel (Read 8211 times))