BackStopThere are several possibilities with the round head allen screw, as the gun uses several of these. Need a thread size and length to narrow it down.As to the shroud turning.... NOT NORMAL... I believe the shroud is held in place with an angle head short allen screw. Very common for the delrin spacer to be stripped. The screw can't grab on to the spacer to tighten, but the shroud moving is a different problem. Once you get all of the other problems fixed, you can super glue the angled srew in and that will be enough to keep the shroud stable if everything else is addressed.The spacer is held in place with a grub screw in a different location.. You have to pull the shroud off and look at the top of the spacer. There is a grub screw under there. If it is loose, it is possible for the entire spacer and the shroud to move. While you have the shroud off, check your front shroud (barrel) spacer. It is about 4 or 5 inches from the end of the shroud. If it is loose or moves, this can contribute to your POI shift. If the o-rings are damaged or twisted you can address that also. On the guns I have worked on (several) I have had to drill a new pilot hole in the spacer if the original one is stripped.Same goes for the other delrin spacer. A little TLC goes a long way with these guns. Hope this helps.
I had some scarring in the rifling from a hasty crown job. This is known to make for fouling and POI shifts.Turned barrel crown back 3/16" and recrowned. Shifts gone and groups are tighter.Take a good look at your crown, may have similar issues.
Yes there is a very small screw that goes through the shroud down near the breech end and threads into the plastic spacer ring.You can find the hole in the shroud, mark the ring, drill a small hole in the ring and thread in a small screw. The stock screw is a pan head with a hex key slot, I am guessing like an M2 or M3 x 1/8" long, but just about anything will work.If you shoot it enough without the screw in there the shroud will eventually pop off! Don't ask how I know
Quote from: UlteriorModem on May 30, 2019, 06:07:11 PMYes there is a very small screw that goes through the shroud down near the breech end and threads into the plastic spacer ring.You can find the hole in the shroud, mark the ring, drill a small hole in the ring and thread in a small screw. The stock screw is a pan head with a hex key slot, I am guessing like an M2 or M3 x 1/8" long, but just about anything will work.If you shoot it enough without the screw in there the shroud will eventually pop off! Don't ask how I know So far, the shroud screw stays in, but it never locks down tight. You can turn it all day. So it is stripped, but stays put... so far...
Quote from: BackStop on May 30, 2019, 10:34:11 PMQuote from: UlteriorModem on May 30, 2019, 06:07:11 PMYes there is a very small screw that goes through the shroud down near the breech end and threads into the plastic spacer ring.You can find the hole in the shroud, mark the ring, drill a small hole in the ring and thread in a small screw. The stock screw is a pan head with a hex key slot, I am guessing like an M2 or M3 x 1/8" long, but just about anything will work.If you shoot it enough without the screw in there the shroud will eventually pop off! Don't ask how I know So far, the shroud screw stays in, but it never locks down tight. You can turn it all day. So it is stripped, but stays put... so far...Mine was stropped out too plus it was really hard to get to as it was on the bottom. I just rotated the shroud a little so the screw was in a more accessible location and drilled a new pilot hole and re-treaded it.
I have looked at the crowns on my ATI's and there really isn't what I'd call a conventional crown on them but they shoot so darned accurately I left well enough alone. As far as the screw for the rear of the shroud, I knew they have one but in the assembly manual for the Freedom it doesn't really show it explicitly like it does in the Liberty manual.
Quote from: UlteriorModem on May 31, 2019, 12:57:00 PMQuote from: BackStop on May 30, 2019, 10:34:11 PMQuote from: UlteriorModem on May 30, 2019, 06:07:11 PMYes there is a very small screw that goes through the shroud down near the breech end and threads into the plastic spacer ring.You can find the hole in the shroud, mark the ring, drill a small hole in the ring and thread in a small screw. The stock screw is a pan head with a hex key slot, I am guessing like an M2 or M3 x 1/8" long, but just about anything will work.If you shoot it enough without the screw in there the shroud will eventually pop off! Don't ask how I know So far, the shroud screw stays in, but it never locks down tight. You can turn it all day. So it is stripped, but stays put... so far...Mine was stropped out too plus it was really hard to get to as it was on the bottom. I just rotated the shroud a little so the screw was in a more accessible location and drilled a new pilot hole and re-treaded it.Did you use a longer screw or the stock screw after you drilled?
Factory Crown with rifle scoring:Recrowned
After some of my nephews demonstrated their strength by pumping up one of the Freedoms rapidly, we cooked our first pump o-ring.I had some brown Vitron rings ready to go, opened it up, replace the single Buna 90 duro with 2 Vitrons and we'll see how the pair fairs.Very easy item to maintenance, all owners should be ready to execute because it's just a matter of time.
Quote from: Thane on May 16, 2019, 07:06:00 PMAfter some of my nephews demonstrated their strength by pumping up one of the Freedoms rapidly, we cooked our first pump o-ring.I had some brown Vitron rings ready to go, opened it up, replace the single Buna 90 duro with 2 Vitrons and we'll see how the pair fairs.Very easy item to maintenance, all owners should be ready to execute because it's just a matter of time.How are the new o-rings working out?
Quote from: Thane on May 31, 2019, 06:44:36 PMFactory Crown with rifle scoring:RecrownedLooks great!
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