Engineered to be 1/3 Stronger than TC factory issue springs for a tighter, more accurate lock up of Contender, G2, and Encore, Pro Hunter and ProHunter Endeavor barrels.
You can actually hear the difference, you'll be amazed.
Replacement of the spring does not require a gunsmith. You should be maintaining the locking bolts, spring, and the slotted roll pin often, pictured with barrel and top surface of locking bolts.
With the barrel off the action, notice the locking bolts are under spring tension and the slope or direction they are installed, you have a left and right locking bolt or some of the OLDEST Contenders had a 1 piece locking bolt. Either way, the locking bolts have a slope to them from top to bottom that allows the locking bolts to collapse as the barrel is being closed. Be sure to reinstall the same.
I securely place the barrel in a padded vice, lug to the side. It helps at this time if you have a friend push back the locking bolts, this relieves tension against the slotted roll pin. Using a 3/32 roll pin punch and a small hammer remove slotted roll pin. Remove punch while keeping locking bolts held in some, then locking bolts and spring can now be removed. The spring does not always come flying out so your pin punch can generally get it.
Replace spring and reinstall in reverse order. Again, if you have someone help you by pushing the locking bolts in to clear the notch in the tails of the locking bolts. If not, I use the punch as a guide and the hold back the locking bolts with my thumb. Function check before installing on the frame, I just use the end of the hammer to push in to verify the locking bolts do fully collapse.
TIP Regarding Bergara Encore barrels only:
A spacer should be installed in front of our spring in the bottom of the hole to get even more force on the locking bolts. I use a common BB which works perfectly. Make certain you can push the locking bolts all the way in, flush with the end of the barrel lug. If you cannot, you may need to shorten the spring very slightly. Also, the Bergara barrels require a 5/64" or similar metric roll pin punch, available on the store under Tools.
(Most Contender barrels will not accept any further compressing of the spring.)
Just squeeze a TC factory stock locking bolt spring, left, and a Bellm custom Heavy Duty Locking Bolt Spring, right. There is a dramatic difference you can see and feel! Now install one and close the barrel, you can HEAR the difference.
Don't risk ruining your roll pin or worse damaging your barrel, use our high quality roll pin punch to remove and re-install those already difficult locking bolt roll pins. These special punches have a sharp tip that isolates the roll pin and prevents from mushrooming. Use with most TC and aftermarket barrels. Will not work on Bergara barrels.