Mini 14 gas bushing change

[donnrcp]

I have an early Ranch model 580 series with a pencil barrel. I have checked posts on Perfect Union and the Ruger forum and feel comfortable enough to proceed once I get the bushings from Accuracy Systems. Inch pounds of torque not foot pounds, break the stakes 1/4 turn criss cross pattern, going to start with the .050

any advice from my brothers here? I will post pictures of the procedure.

[cowtown]

Super easy. Sounds like you have a handle on it - pop off the stock, undo the four bolts, separate the gas block, pull bushing and replace.

I have the heavy barrel new model and have been experimenting with bushings made on my minilathe. I'm trying to get reliable cold-weather extraction with steel case Tula and Wolf without injuring the other guys next to me at the range.

I started at 0.040 (fine for brass in warm but not cold weather) and am up to 0.046 now (fine for laquered steel case in warm but not cold weather). Gonna try 0.050 next trip, so it sounds like you are bypassing all that useless experimentation and doing it right the first time.

[Silverback]

I have an early Ranch model 580 series with a pencil barrel. I have checked posts on Perfect Union and the Ruger forum and feel comfortable enough to proceed once I get the bushings from Accuracy Systems. Inch pounds of torque not foot pounds, break the stakes 1/4 turn criss cross pattern, going to start with the .050

any advice from my brothers here? I will post pictures of the procedure.

Sounds like you are on track. Why didn't you go with the adjustable system?

[nickel plate]

I'm just getting ready to start this same gas bushing change out. I ordered my Mini 14 series 583 tapered barrel reduced bushing set from Mr. Lee Hadaway as his sets don't require any further trimming in order to fit my Mini model number.
Break the stakes? I don't see any evidence of crown staking on my 583-am I missing something? Please inform me as to proper unstaking of a model 583.

[Fastattack]

I installed one several years ago. It was no problem except for re-torquing the bolts. At the time, proper torque was unknown as Ruger didn't publish it. That might have changed.

[Dnele928]

The reports from Mini 14 owners is that the factory gas bushing has a large orifice...sending the brass flying. I loved the post of one M14 owner that he's sure a lot of his spent brass is still in low earth orbit.

[donnrcp]

[QUOTE=Silverback;19447772]Sounds like you are on track. Why didn't you go with the adjustable system?[/QUOTE

Didn't want to spend that much. I just want to keep my brass from launching into that low Earth orbit!

[donnrcp]

Mini 14 gas bushing change

I'm just getting ready to start this same gas bushing change out. I ordered my Mini 14 series 583 tapered barrel reduced bushing set from Mr. Lee Hadaway as his sets don't require any further trimming in order to fit my Mini model number.

Break the stakes? I don't see any evidence of crown staking on my 583-am I missing something? Please inform me as to proper unstaking of a model 583.

Check this out: http://rugerforum.net/ruger-semi-aut...s-bushing.html

[nickel plate]

donnrcp,
Thanks for the photo and link. I again rechecked the top and bottom of my new Mini 14-no signs of any staking or any ooz of Loctite. I'll find out soon enough as my bushings are in the mail heading this way.
After some bushing testing I'll probably close it up with some red Loctite.

[nickel plate]

The re-bushing project is starting/tooling up. Today I received in the mail a six pack of 1/4" X 3" hex heads-the only one I need for torqueing the gas block is the 9/64". Ground it down so that it would clear the block and the front sling swivel as to not apply any pressure between the two thus contaminating a true torque setting.
Lee Hadaway drop in bushings should be here Monday.

[donnrcp]

The re-bushing project is starting/tooling up. Today I received in the mail a six pack of 1/4" X 3" hex heads-the only one I need for torqueing the gas block is the 9/64". Ground it down so that it would clear the block and the front sling swivel as to not apply any pressure between the two thus contaminating a true torque setting.
Lee Hadaway drop in bushings should be here Monday.

Check this out, QD swivel option: http://www.perfectunion.com/vb/ruger...qd-swivel.html

[donnrcp]

Mini 14 gas bushing change







Breaking the stakes did require careful leverage, one actually created a spark.

Unfortunately I ordered the bushings from Accuracy Systems based on the prefix of 580. My early Ranch model requires the longer 0.295 bushing. So I reordered the correct size and will be refunded the cost of the bushings based on the prefix. Accuracy Systems should amend the web site to prevent the few of us that do order for our specific 580 from having to pay twice for shipping. I found 1/4 inch drive 9/64 hex for my torque wrench at my local hardware store, not at Lowes or Home Depot.




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[donnrcp]

Had to trim from 0.3020 to 0.2955



Trimming went nicely.



Function tested today and final setup is the 0.050 bushing, heavy duty recoil spring, Wilson shok buffers fore and aft. Accu-strut and scope are now back on and will re zero the rifle next time out. Brass flies 6-10 feet 3 to 4 o'clock with my reloads of 25.7 grs of TAC and a 55 gr FMJ.


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[God Bless America]

You know about torquing the gas block for accuracy?

[nickel plate]

You know about torquing the gas block for accuracy?

Are you asking for GB torqueing information or do you have some to share?