I've always wondered how gunsmiths calculate the amount of holes vs the length of barrel and how much gas release is beneficial vs hindering performance. Pretty cool you did this on your own, i kinda figured it's not that hard. Just need a little can do attitude and maybe an extra slide and or barrel... you've definitely got a knack for it, but i understand why you wouldn't want to make a business out of it with all the BS regulations and laws that taunts firearms.
Much appreciated! When I started doing this, I looked at a bunch of porting jobs that shops offered and guessed at the hole size and got a starting point of cross sectional area from there. Starting doing the porting jobs and fine tuned it based on the performance I was getting. Im sure you could arbitrarily punch holes in the end of a barrel and see some performance gain. I wanted to be a little more scientific about it that that. I am a mechanical engineer, and have a basic working knowledge of fluid mechanics (I got way into the weeds with compressible supersonic gas flow at one point haha). There are two very basic things that will always undoubtedly increase performance. 1. Direct as much gas vertically as possible. .2 Put the ports as close to the end of the barrel as possible. I have found some port size and layouts that i prefer based on the testing and results I have seen and pretty much stick to those now. I wont drill holes larger than .125", and I generally have a cross sectional area range I target based on barrel length. Depending on what milling I can do (and think would look good) to the slide, the barrel length, and how I want to arrange the ports, that is how my port designs come about. Of course I am limited to what I can do with my 3-axis manual machine and machining skills. I also look at what other people are doing to pistols of the same style - like the Bul Armory Tac Pro in this case. I'm not trying to reinvent the wheel here, there are only so many ways you can punch holes in a barrel. I will likely never come up with some new, crazy, novel port design that revolutionizes ported barrel performance haha.
@@EngineersArmory dang that's probably the most informative and interesting comment I've gotten back in reference to porting! Sounds like you know what you're doing and from looking at your library it only validates that. I've been curious about my 365 AXG Legion having ports on top of the stock "integrated compensator" SIG offers. Aftermarket slides with windows and ported barrels can be bought for the 3.1" version. I would love to get something like that but have also been skeptical of ports being a couple inches from the barrel hood. Anyway appreciate your time!
I just grabbed a girsan 2311 4.25 for 600 the same as the tisas lol! Was a flash deal! I wanted a commander 2311 and it popped up so i grabbed it. Hope its not too crappy!
You're not gonna be able to run a tool less guide rod with a bushing barrel. Check out my budget upgrades video on this pistol. I would recommend the wilson combat full length commander guide rod. The 16# factory recoil spring was a but heavy so I got a reduced power tuners pack from wolff. Without ports I dropped it down to 15#. 14# would be fine too. With ports I run 13#.
Sorry I keep saying this but please use a board, not a flapping sheet for VS comparison slow motion. A plywood sheet painted white with a graph paper grid, or board painted black with craft layout grid board with inch squares. Think car crash test with grid back grounds to illustrate compressions and movement of crumple zones. I think you have the porting mastered now. Nothing is safe from your milling machine.👍👍
Haha sorry man. Probably not going to happen. Its easy for me to fold up this photography background sheet and put it in my range bag. Wouldn't be so easy to haul around a sheet of plywood in my car. Those grid lines are also specific to calculating velocities and accelerations, which I am not concerned with. I know its not the best but the sheet creates clear enough of a background for me to get the muzzle angle measurements.
@@EngineersArmoryIm curious to ask did you have an issue that it fail to chamber when you first take it out the first time at the range? And also did it shoot low to the left?
@@therock1902 didnt have any reliability issues out of the box. Point of impact was low. Watch your trigger finger if you're hitting low left (of you're right handed). Out of the box the trigger is shit. Not easy to shoot accurately. I posted a first shots video if you want to check it out.
That would be really cool to get one of my pistols in the hands of a more experienced shooter who has shot really high end guns to see how they compare. I have since sold this pistol to fund other projects. Also he probably gets so many messages and requests he would never see mine. I would have to leave a comment on his video or something.
@@isidrosevier1125 oh yeah I know they have a "drop in" barrel for the prodigy. I would be very surprised if a new bull barrel with comp didn't require fitting.
@@isidrosevier1125 if it has the slots in the slide already I would just port it. The compensators are sick too tho. As far as I know you would likely need a lathe to machine down and properly fit the cone of the bull barrel into your slide.
Dont have the mac9ds so couldnt say for sure. I have seen the mac9ds for as low as $840 which is a really good deal. But I've seen this one for $220 less than that. Depends on your budget and the features you want (bushing barrel vs bull barrel, optic mount, looks, etc.)
I wanted a project. That was the whole point of me buying the cheapest doublestack 1911 I could then modifying it to see how well I could make it perform. I also have less money into this than a Springfield prodigy. I have shot a couple stock prodigys and this performs way better for $200 ish less. for the $1000 I have into this, there is not another double stack 1911 I could have bought that performs this good. If I wanted a high end 2011 I would have bought one.
Sorry for the re-upload. I found some mistakes in the original I needed to correct.
I've always wondered how gunsmiths calculate the amount of holes vs the length of barrel and how much gas release is beneficial vs hindering performance. Pretty cool you did this on your own, i kinda figured it's not that hard. Just need a little can do attitude and maybe an extra slide and or barrel... you've definitely got a knack for it, but i understand why you wouldn't want to make a business out of it with all the BS regulations and laws that taunts firearms.
Much appreciated!
When I started doing this, I looked at a bunch of porting jobs that shops offered and guessed at the hole size and got a starting point of cross sectional area from there. Starting doing the porting jobs and fine tuned it based on the performance I was getting. Im sure you could arbitrarily punch holes in the end of a barrel and see some performance gain. I wanted to be a little more scientific about it that that. I am a mechanical engineer, and have a basic working knowledge of fluid mechanics (I got way into the weeds with compressible supersonic gas flow at one point haha).
There are two very basic things that will always undoubtedly increase performance. 1. Direct as much gas vertically as possible. .2 Put the ports as close to the end of the barrel as possible.
I have found some port size and layouts that i prefer based on the testing and results I have seen and pretty much stick to those now.
I wont drill holes larger than .125", and I generally have a cross sectional area range I target based on barrel length. Depending on what milling I can do (and think would look good) to the slide, the barrel length, and how I want to arrange the ports, that is how my port designs come about. Of course I am limited to what I can do with my 3-axis manual machine and machining skills. I also look at what other people are doing to pistols of the same style - like the Bul Armory Tac Pro in this case. I'm not trying to reinvent the wheel here, there are only so many ways you can punch holes in a barrel. I will likely never come up with some new, crazy, novel port design that revolutionizes ported barrel performance haha.
@@EngineersArmory dang that's probably the most informative and interesting comment I've gotten back in reference to porting! Sounds like you know what you're doing and from looking at your library it only validates that. I've been curious about my 365 AXG Legion having ports on top of the stock "integrated compensator" SIG offers. Aftermarket slides with windows and ported barrels can be bought for the 3.1" version. I would love to get something like that but have also been skeptical of ports being a couple inches from the barrel hood. Anyway appreciate your time!
The amount of requests to port others' slides must be quite a few. Superb job & video.
I am sub $1K with the few upgrades. Love it. Again, love your videos and have helped me TONS!
Great video so would you consider taking on projects to port other guns if sent to you?
I just grabbed a girsan 2311 4.25 for 600 the same as the tisas lol! Was a flash deal! I wanted a commander 2311 and it popped up so i grabbed it. Hope its not too crappy!
Good deal! Hope it runs for you. I have no experience with those.
Sweet heater! Thanks for sharing.
Love it. Ive been debating on getting mine ported as well
Impressive work, very inspirational. Going to sub now keep up the good work man
I like the grip and stippling. Is that after market or stock? Where did you get it?
That is the factory grip. I stippled it myself.
What kind of holster you recommend?
Regular 2011 holsters should work. Lots of options. I attached the TLR1 light to mine so I could use my blackhawk omnivore holster
What is your recoil spring set up ? I’m new to 1911 and just purchased the same firearm and wanted to change it to a tooless guide rod
You're not gonna be able to run a tool less guide rod with a bushing barrel. Check out my budget upgrades video on this pistol. I would recommend the wilson combat full length commander guide rod. The 16# factory recoil spring was a but heavy so I got a reduced power tuners pack from wolff. Without ports I dropped it down to 15#. 14# would be fine too. With ports I run 13#.
@@EngineersArmory I’m watching it as we speak lol thank you very much it had a ton of information I was looking for
@@killmongers550 glad its helpful! Thanks for watching and commenting!
Sorry I keep saying this but please use a board, not a flapping sheet for VS comparison slow motion. A plywood sheet painted white with a graph paper grid, or board painted black with craft layout grid board with inch squares. Think car crash test with grid back grounds to illustrate compressions and movement of crumple zones.
I think you have the porting mastered now. Nothing is safe from your milling machine.👍👍
Haha sorry man. Probably not going to happen. Its easy for me to fold up this photography background sheet and put it in my range bag. Wouldn't be so easy to haul around a sheet of plywood in my car. Those grid lines are also specific to calculating velocities and accelerations, which I am not concerned with. I know its not the best but the sheet creates clear enough of a background for me to get the muzzle angle measurements.
Which steel main spring housing did you get for replacement of the polymer version?
Dawson precision flat.
@@EngineersArmory thanks
@@EngineersArmoryIm curious to ask did you have an issue that it fail to chamber when you first take it out the first time at the range? And also did it shoot low to the left?
@@therock1902 didnt have any reliability issues out of the box. Point of impact was low. Watch your trigger finger if you're hitting low left (of you're right handed). Out of the box the trigger is shit. Not easy to shoot accurately. I posted a first shots video if you want to check it out.
@@EngineersArmory I'll check it out thanks.
Where did you get the upgrade parts?
Check out my budget upgrades video for more info on that. Mostly ordered from Dawson precision, Wilson combat, Wolff springs.
Reach out to honest outlaw he is reviewing a tisas now and your gun would add to the review...
That would be really cool to get one of my pistols in the hands of a more experienced shooter who has shot really high end guns to see how they compare. I have since sold this pistol to fund other projects. Also he probably gets so many messages and requests he would never see mine. I would have to leave a comment on his video or something.
Do you work on other people's guns?
No sir. I just do this for fun. Dont want to turn it into a business.
@@EngineersArmory damn you nice asf wit it
@@thaonlytruth much appreciated!
@@EngineersArmory Always! And if you ever change your mind please message me
Soooooo…. Can you port mine?? 😃
Haha sorry man, just doing this for fun. I'm sure there are lots of companies out there that port 1911s however you want it done.
Now do the same thing you did to this one on a Mac 9ds.
Im not going to port the MAC 9DS. Performacne would be really similar to this. I plan on buying the LFA Apollo 11 next and that will get ported.
@@EngineersArmory I wonder if dsc gun works comp barrel will work in the Mac 9ds. That can possibly be an option.
@@isidrosevier1125 oh yeah I know they have a "drop in" barrel for the prodigy. I would be very surprised if a new bull barrel with comp didn't require fitting.
@@EngineersArmory yea your probably right, I would love to get one for my Bul armory TAC
@@isidrosevier1125 if it has the slots in the slide already I would just port it. The compensators are sick too tho. As far as I know you would likely need a lathe to machine down and properly fit the cone of the bull barrel into your slide.
U think Mac ds better deal
Dont have the mac9ds so couldnt say for sure. I have seen the mac9ds for as low as $840 which is a really good deal. But I've seen this one for $220 less than that. Depends on your budget and the features you want (bushing barrel vs bull barrel, optic mount, looks, etc.)
Get Ben Stoeger to run this piece💎
Would love to get some of my guns in he hands of pros. I'm not a good judge of performance haha
@@EngineersArmory Watch his publication on yt and explore them at home. You’ll discover his inductive learning approach on shooting is simple.
@@CA.0verview I'll have to check out more of hos content!
So you ended up modifying a pistol and could've just bought a better gun. Buy once, cry once.
I wanted a project. That was the whole point of me buying the cheapest doublestack 1911 I could then modifying it to see how well I could make it perform. I also have less money into this than a Springfield prodigy. I have shot a couple stock prodigys and this performs way better for $200 ish less. for the $1000 I have into this, there is not another double stack 1911 I could have bought that performs this good. If I wanted a high end 2011 I would have bought one.