bullet is past the ports, the front of the bullet should be right at the end of the barrel if not already easing out the end of the barrel. I could easily be wrong, but I don't see how you could lose any velocity. Even cutting an inch off a barrel, you only lose about 40 fps so porting shouldn't effect your velocity. Mag Na Port has always said that you don't lose any velocity with their porting.
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Mag-na-port, et. al.
- Shawn Davis, 2018-12-10, 19:20
![[*]](themes/default/images/complete_thread.png "Open whole thread")
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I had it done on a 4" 629
- Grover Sr, 2018-12-10, 19:42
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429 GNR is too hot for a Contender. (nm)
- Gary Reeder, 2018-12-10, 20:29
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Are there any other options for a 44 Mag barrell
- Grover Sr, 2018-12-11, 10:50
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you can go 445 Super Mag. That works in a Contender (nm)
- Gary Reeder, 2018-12-11, 11:14
- Thanks, will be sending it in for rechambering and a brake (nm) - Grover Sr, 2018-12-11, 11:18
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you can go 445 Super Mag. That works in a Contender (nm)
- Gary Reeder, 2018-12-11, 11:14
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Are there any other options for a 44 Mag barrell
- Grover Sr, 2018-12-11, 10:50
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429 GNR is too hot for a Contender. (nm)
- Gary Reeder, 2018-12-10, 20:29
- if it is done by Mag Na Port it will be just - Gary Reeder, 2018-12-10, 19:33
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Their web site says that testing
- IC, 2018-12-10, 19:31
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I like it on a rifle, not bad on a single shot
- WB, 2018-12-10, 21:04
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Mag-na-port velocity
- Randy Barnett, 2018-12-11, 14:46
- MY TESTING HAS PROVED NO VELOCITY LOSS. (nm) - JT, 2018-12-12, 08:07
- I don't think so. By the time the base of your - Gary Reeder, 2018-12-11, 19:42
- I’m down to one magnaported rifle, a 375HH that - Drdougrx, 2018-12-11, 06:19
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Mag-na-port velocity
- Randy Barnett, 2018-12-11, 14:46
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I like it on a rifle, not bad on a single shot
- WB, 2018-12-10, 21:04
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I had it done on a 4" 629
- Grover Sr, 2018-12-10, 19:42