Author Topic: TF89 Front Sight and Crown  (Read 1451 times)

Offline ezman604

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TF89 Front Sight and Crown
« on: January 17, 2010, 01:44:39 PM »


I glassed my TF89 .22 last week and let the Locktite set for 2-3 days. Yesterday I finally got a small break in the weather to try and zero it in.I mounteda Center Point 4-16X40-AO Ipicked upat Wally World. I set my targets up at my usual 25 yards. It took several shots just to get it on paper. Using a Shoot-N-C 8" square target. After about a dozen shots, I finally got it on bull. A couple of shots later, it'sup and right 2". Re-zero, back on. Couple shots, back off again. This ain't right. This is the first scope I've had issues with. Oh, and I'm using an Accushot 1 piece mount, it's very secure and not moving. I was also not impressed with the light gathering of this particular scope. My Benji SS came equipped with one of these same scopes and it's rock solid, very clear anddoes a fine job of gathering light. So, I took this one back and swapped it for a Bushnell Sportsman 4-12X40-AO instead just to see how it worked.



Now, while mounting this scope, I thought I'd take a look at the crown. Hmmm, there is no crownthat I can see. So, I think this MAY have been part of the problem with shifting POI. I removed the loctited screws in the front sight/muzzle breakbut it's not budging. Before I put tools to this, I wanted to see if anyone has removed themuzzle break and can offer some tips. I really don't want to ding up the rifle but think I need to get a crown on this barrel.



Okay, change of story. After taking some close up photos of the end of the barrel and the muzzle break, I see a slight crown. Dooohhhh......What my eyes couldn't see, even with a magnifying glass. Should there be MORE of a crown? If not, the scope was probably the real culprit. But suggestions on getting this muzzle break off is still appreciated.



Thanks AOT.



Dave



Crosman/Revelation 760 PumpMaster (Vintage 1967)
Powerline 1000S .177 (semi-tuned by me)
Benjamin Super Streak .177/.22 (semi-tuned by me)
Benjamin Trail NP XL1500 (bone stock)
Benjamin Trail NP XL1100 (project gun)
TF89 .22 (tuned by Gene)
Winchester 1000WS .177 (semi-tuned by muwah)
QB57 (l

Offline bcshooter

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RE: TF89 Front Sight and Crown
« Reply #1 on: January 17, 2010, 03:03:06 PM »
Dave, you need a heat gun and past it over the muzzle break a few times to soften the glue they use to hold it in place. Be careful exercise some caution, so you do not melt the plastics. It must get hot in order to break the glue. Use a block of wood and catch the edge and gently tap it off. Have to to this a few times to get it off.Good Luck and do not melt it..........Bill
AIR ARMS TX200 MkIII .22cal w/Bushnell Banner 6-18x50 AO      
BAM B 26   .177cal w/Centerpoint 4-16x40 AO/IR
BAM B 30-1 .177cal w/Leapers 4-16x50 AO/IR
CROSMAN 1377 .22cal w/UTG BugBuster 6x32 AO/IR
CROSMAN 2240 .177cal 10.1\" LW barrel w/UTG BugBuster 6x32 AO/IR
CROSMAN 2250B .22cal w/UTG Leapers 2-7x32 AO/IR
DIANA/RWS Model 34N .177cal w/Bushnell Sportsman 4-12x40 AO
DIANA/RWS Model 34P .22cal w/Centerpoint 4-16x40 AO/IR
DIANA/RWS Model 350 .22cal Feuerkraft Pro Compact w/Vortek PG-2 and Bushnell Banner 6-18x50 AO
DIANA/RWS Model 48  .177cal w/Centerpoint 4-16x40 AO/IR
DIANA/RWS Model 52   .22cal w/Leapers 4-16x50 AO/IR
DIANA/RWS Model 54  .177cal w/Leapers 4-16x50 AO/IR
DIANA/RWS Model 54   .22cal w/Leapers 4-16x50 AO/IR


Offline Mark_MD

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RE: TF89 Front Sight and Crown
« Reply #2 on: January 18, 2010, 07:52:25 AM »
I didn't have a heat gun handy so I used the wife's hair dryer, took a little longer but it came off with block of wood and small rubber mallet like Bill said. Also the Beeman Universal or Ported Muzzlebrakes will fit this gun.Have been thinking of chopping off 6" and recrowning this barrel. Guns a little long for me.
Tech Force 89 .22 (Chopped by me), Gamo Hunter 440 .177 (Chopped by me), Mendosa RM 200 .22 (Chopped by me),Beeman R7 DG .177, Beeman R9 .177, Mike Melick tuned B-26 .22, BSA Lightning XL .22, RWS 48 .22, Rob Hawkins tuned HW50s .22, UK Webley Xocet .22, HW30s .177 HW30s .22, HW 40 .177, CZ 631 .177