The official Mike Bellm's

Bellm TCs

TC Contender, G2, Encore/ProHunter Performance Center


When the TC guns don't shoot to your satisfaction, we are the ones to spell out the fundamentals and Our mission is to enable you to "Shoot Smart."

Read the page below to avoid wasting a lot of time and money and not only saving yourself a lot of frustration but realizing how great the TC interchangeable barrel systems really can be!

We provide what you need to know and what you need to do to make the TC Encore/Pro Hunter/Endeavor and Contender/G2 guns work for you.

Frankly, all too often when a TC break open gun is not shooting or working right, this old adage applies:
Do it right the first time.

We enable YOU to do it right and to do it quickly and economically yourself, except for the machine work on barrels of course.

Do the basics outlined below FIRST

Before you grab a phone number below, please read this page in its entirety and go to the pages linked from it. Follow the logic. It is all based on years of specialized experience backed by good science, it all makes sense, and naturally it works!

FFL! Check out our new website Now offering complete Guns, Trigger Jobs, cleaning and repairs, Barrels, Stocks, Bellm Parts, Accessories, Retail/Wholesale Accounts, Payments, Returns, Etc.

OK, here is the logic:

No barrel is any better than the rest of the gun it is put on, no matter who made the barrel , how much money you paid for it, or how much "working up a load" you do.
If you think you can assemble one of millions of barrels and thousands of frames, shoot ammo with all sorts of variables, and expect the combination to shoot every time, let alone shoot sub-moa accuracy every time, right now is the time to stop living in a dream world.

No matter what you want to believe, it just cannot happen every time, and that it does happen as often as it does is a testament to the potential of the system.

There are reasons why the TC interchangeable barrel guns work great, and there are reasons why they don't as well.

While "working up a load" is fun and challenging, as is trying all the various premium factory loads we have today, pouring hundreds of dollars worth of powder & bullets down a barrel trying to MAKE it shoot when it can't for mechanical reasons simply makes no sense at all.

Follow the logic and you will see why it is necessary to go above and beyond Thompson Center policy and procedures.

  • There is no reason to blindly waste money shipping things back and forth to anyone,
  • pouring a fortune in ammo and components through a barrel trying to make it shoot when the rest of the gun has inherent problems that prevent it from ever working in the first place,
  • giving up when things don't work after wasting a lot of money
  • taking a loss on barrels, or
  • giving up on the system as a whole
There are 6 main points in the TC interchangeable barrel system that you can and must fix on a routine basis.
These are issues you best take care of yourself. The two last places to take these guns are the manufacturer and with few exceptions "my local gunsmith."

The average gunsmith is not specialized in the interchangeable barrel guns such as the Thompson Center Encore/Pro Hunter family and the Contender or newer G2.

Sending a TC gun or barrel back to anyone is the last thing you do and only for certain things. Policy and procedures fall dismally short of what you need to make the system work for YOU! You may get a report a barrel shoots well enough for them, but then they fail to tell you how to do it!

Hurray for TC if a barrel shoots ok for them, but what about YOU?
How it shoots for YOU is the only thing that matters!

YOU must be enabled to make the combinations of barrel, ammo, and frame work for YOU! That is what we do. We are about enabling YOU to do what must be done routinely yourself.

The same applies to any barrel maker, production or custom. No matter how good the barrel itself is, it is going to shoot no better than the rest of the system lets it.

If it does not shoot well, there is a reason. You have to eliminate those variables in the system as a whole before you can narrow it down to the barrel. And, again, if it is narrowed down to the barrel, there is still a reason why the barrel does not shoot well.

Finding and correcting the problem in the barrel if possible makes a whole lot more sense than playing "barrel roulette" with the maker hoping to get lucky when the maker in all probability doesn't have a clue why it does not shoot well in the first place.

These 6 weak links in the chain are things you can routinely take care of yourself :
  • Fit at the hinge
  • Headspace
  • Hammer Spring
  • Trigger Pull
  • Barrel Lockup
  • Plastic Stocks

If a barrel does not shoot these points are likely causes:
  • Loose fit at the hinge
  • Loose lockup at the locking bolts
  • The barrel is "bouncing" on the firing pin bushing and needs clearance
  • There is either too much headspace or no headspace
  • The factory hammer spring is too weak
  • The forend may be effecting the barrel's harmonics
  • Bad/out of square/misaligned crown
  • Misaligned, oversize throat or simply a bad SAAMI chamber throat design
  • Inadequate Scope Base and Ring Mounting

In nearly every instance in my 36 years working on barrels, rechambering to a longer chamber that cuts out all or most of the factory throat and permits cutting a new throat, centered with the bore and of minimum diameter has made treasures out of barrels otherwise destined for the trash or shuttled down the road to the next unsuspecting buyer who has the same problems with accuracy.

See this page to understand the role of the throat and see examples:
What a throat is supposed to be and what you get are entirely different!

The throat is the final "forming die" where the bullet is guided into its final form before its trip down the bore. If it goes into the throat at an angle, it is thrown out of balance. It must go into the rifling with the least amount of asymmetrial distortion.

Below are links to just a few sample pages for the basic information you need.
Take time to glean through the small print of the extensive menu list on the left for more details and options.

Bellm oversized hinge pins to adjust the fit at the hinge.
It's a bit overly optimistic to expect a barrel shaking around on the frame to shoot in the same place each time. It takes both a snug fit at the hinge and snug lockup at the locking bolts to hold the barrel the same from shot to shot.

How to measure and correct headspace yourself
YOU must do it routinely. These guns are very sensitive to headsapce, too much or too little, and headspace changes from one box of ammo to the next, one reloading to the next.

Bellm stronger Encore/Pro Hunter speedlock hammer spring
Factory Encore/Pro Hunter hammer springs are just not strong enough, especially if a hammer extension is used, headspace is on the generous side, shooting ammo with "hard" primers, or when shooting belted magnums in particular.

Contender hammer springs
Contender hammer springs are a "high stress" spring and fatigue over time. They must be replaced periodically.

We are THE source for Trigger Job support at whatever level you want to approach it.
See the various trigger related links below for instructions, springs, and tools to do the job yourself as a layman, a professional gunsmith, or one of our associates.
Basic Trigger Job Instructions--- FREE Download
Spring pliers and spring kits
Bellm custom trigger/sear springs in 7 different weights
Trigger jobs done for you.

Pertaining to the forend:
Pillar bedding example/instructions
Pillar bedded forends by Dr. Tony Gettel

Our Relationship with Thompson Center Arms Co.
About Thompson Center Arms Co. and Us.
Warranty and Disclaimer Statements
Most importantly, what our customers have to say!


  eCommerce solution by
  Nibbles Knot Web Authoring

  Web Hosting by


All Images and information contained on this site are the intellectual property of Bellm TC's.