Match Barrels / Compensators

There are many factors that affect the accuracy of a pistol besides the installation of a match barrel. For that reason, I provide certain services with my barrel fitting. My services include a detailed inspection of the entire pistol and consulting with the customer about possible problem areas that may affect the accuracy, safety, or reliability of the pistol.

When shot with the proper match ammo, a complete Bob Marvel pistol or a rebuild with all the recommended corrections yields the following typical 10 shot - 50 yard groups. There are no exceptions - if a pistol does not meet my established standards, I will correct the pistol's accuracy and reliability before shipping it to a customer.

.45acp - 1.100” to 1.500” .38 super comp - .750” to 1.000” 9mm - .750” to 1.100”

Only Bullseye and PPC pistols are ransom rest tested as part of the package. All other packages and work is ransom rest tested by request and at an extra charge.

Match Barrel Installation Services

- Fit match barrel for optimal accuracy

- Fit bushing and link correctly

- Correct and polish throat

- Cut chamber to correct depth and polish

- Correct breech face

- Dress slide interior

- Re-cut/match frame feed ramp and polish

- Correct extractor (if usable)

- Correct ejector (if usable)

- Correct the recoil spring guide

- Crown the barrel

- Correct the slide stop

- Advise customer as to other possible issues

- Provide load data and sample of match load

Available Options

m1. Kart non-ramped barrel installed - $395.00

m2. Kart ramped barrel installed (Para or Clark ramp is prefered; Nowlin/Wilson ramp, if required) - $475.00

m3. Kart non-ramped barrel with Marvel tapered sleeve (cone) installed - $445.00

m4. Kart ramped barrel with Marvel tapered sleeve (cone) installed - $495.00

m5. Cryogenic treatment to barrel - $50.00

Tapered sleeve barrels include a standard reverse plug fit to the slide. (Custom plug provided at an additional cost.) The advantage of a tapered sleeve barrel is that better accuracy can be achieved since the sleeve has positive and full front end lock-up at the end of the slide interior. A bull barrel has a wedge style lock-up that requires the barrel to be slightly under- sized at the muzzle end for fitting/clearance reasons. Both styles are very reliable and both have a “field” advantage in that they are easy to field strip without the use of a bushing wrench.

m6. National match bushing fitted to customer’s barrel - $68.00

m7. Throat barrel, correct frame feed ramp, correct chamber depth (if short), and polish the chamber - $95.00

m8. Correct barrel hood length by welding and re-cutting the hood length - $60.00

m9. Replace barrel link - $15.00

m10. Correct barrel “leg” problems and re-link if required - $40.00

m11. Crown customer’s barrel - $10.00

Each barrel and ramp has to be evaluated to assess if the corrections are possible, due to safety and functioning issues.

m12. Marvel compensator installed onto customer’s barrel (includes comp, reverse plug and labor) - $350.00

m13. Ransom rest testing of any single stack 1911 - $150.00