BT-99 not locking fully - NEED INPUT

williamd · September 23, 2007, 09:35 PM

I shoot with a buddy who has BT-99 2 bbl set. It has had a lot of rounds through it but less than half as many as mine, and I only have one bbl. Mine has had zero defects in the 15 years since I bought it used. His is not locking properly and the 32" bbl unlocks when he fires. I cleaned and looked for suspected debris but found nothing. Compared with his 34" bbl and no visible difference. Locking bolt/lugs look okay. Open to any suggestions we can try????? I suspect this can occur in any under lug break action so maybe some experience out there?

Ruger4570 · September 23, 2007, 10:48 PM

I to have a BT-99 and a Citori 4 Barrel set. Locking up has never been a problem. I would suspect he is not getting enough purchase on the locking lug for this to happen. It simply could be that one barrel is not fitted good enough. It is a pretty simple thing to fix on a BT-99

oletymer · September 24, 2007, 09:03 AM

I think Ruger is correct. You might cure it with a new spring for the top lever is there is only a small difference in the lugs.

williamd · September 24, 2007, 11:41 AM

Thanx, have ordered a couple of pieces from Brownell's to 'rebuild' the lever mechanism. Have done this on O/Us and it is quite easy. And a locking 'bolt' which will be new work and fun learning.

oletymer · September 24, 2007, 06:23 PM

If you have to do this work again get the BT99 rebuild kit from Midwest Gunworks. It has the locking lug, some rods and all the springs. It comes in a kit and is cheap.

williamd · September 24, 2007, 11:36 PM

Hey, oletymer ..... THANX!!

September 23, 2007, 09:35 PM	#1
williamd Senior Member Join Date: March 13, 2007 Location: SoCal Posts: 801	BT-99 not locking fully - NEED INPUT I shoot with a buddy who has BT-99 2 bbl set. It has had a lot of rounds through it but less than half as many as mine, and I only have one bbl. Mine has had zero defects in the 15 years since I bought it used. His is not locking properly and the 32" bbl unlocks when he fires. I cleaned and looked for suspected debris but found nothing. Compared with his 34" bbl and no visible difference. Locking bolt/lugs look okay. Open to any suggestions we can try????? I suspect this can occur in any under lug break action so maybe some experience out there? __________________ "Outlaw guns and only outlaws will have guns!" Unfortunately, we may be moving in that direction. NRA Benefactor, Conservative!, VN '64-'65. Never sell a gun or a car ... and retire rich!

September 24, 2007, 11:41 AM	#4
williamd Senior Member Join Date: March 13, 2007 Location: SoCal Posts: 801	Thanx, have ordered a couple of pieces from Brownell's to 'rebuild' the lever mechanism. Have done this on O/Us and it is quite easy. And a locking 'bolt' which will be new work and fun learning. __________________ "Outlaw guns and only outlaws will have guns!" Unfortunately, we may be moving in that direction. NRA Benefactor, Conservative!, VN '64-'65. Never sell a gun or a car ... and retire rich!

September 24, 2007, 11:36 PM	#6
williamd Senior Member Join Date: March 13, 2007 Location: SoCal Posts: 801	Kit from Midwest! Hey, oletymer ..... THANX!! __________________ "Outlaw guns and only outlaws will have guns!" Unfortunately, we may be moving in that direction. NRA Benefactor, Conservative!, VN '64-'65. Never sell a gun or a car ... and retire rich!

September 23, 2007, 10:48 PM	#2
Ruger4570 Senior Member Join Date: April 3, 2005 Location: Rochester, New York Posts: 2,136	I to have a BT-99 and a Citori 4 Barrel set. Locking up has never been a problem. I would suspect he is not getting enough purchase on the locking lug for this to happen. It simply could be that one barrel is not fitted good enough. It is a pretty simple thing to fix on a BT-99

September 24, 2007, 09:03 AM	#3
oletymer Senior Member Join Date: September 9, 2005 Posts: 338	I think Ruger is correct. You might cure it with a new spring for the top lever is there is only a small difference in the lugs.

September 24, 2007, 06:23 PM	#5
oletymer Senior Member Join Date: September 9, 2005 Posts: 338	If you have to do this work again get the BT99 rebuild kit from Midwest Gunworks. It has the locking lug, some rods and all the springs. It comes in a kit and is cheap.