Gunsmithing Winchester Action AICS Mags

[Messmaker]

Can someone please help me out trying to find the dimensions for milling the underside of the action to allow aics mags to work for a winchester model 70 post 64 CRF SA.

Thanks

 

[Messmaker]

Pictures and or dimensions would be greatly appreciated.

 

[rgv]

The way I did it was to install the DBM, then scribe the bottom of the receiver through the magwell.

This gives you a guide to mill.

Depth of the cut was a bit of trial and error, if you go too deep, the magazine will interfere with the bolt if you push up on it. I stuck a bore guide in the receiver and tested with a magazine till it was right.

 

[Scimitar]

GAP and Crescent Customs have experience with FN Actions which are just Winchester actions

 

[b6graham]

@LongRifles Inc.

 

[Messmaker]

Thanks guys Im looking to do this on my own and not have it done somewhere. I know LRI and GAP do fantastic work but I am a hobbyist machinist/gunsmith and would like to do it all myself. I feel kind of weird asking someone that does it for a living for there info without purchasing something. If Chad from LRI posts it here thats different, at least to me.

 

[TheBigCountry]

Just a question, but why not run the FN factory DBM kit and mags? I ask because I have one that’s due to be built soon by Moon and went that route (especially since Jeff at CDI passed and you can’t get his version of the FN bottom metal that takes the AI mags/his work on the action to take the AI mags).

 

[Messmaker]

Just a question, but why not run the FN factory DBM kit and mags? I ask because I have one that’s due to be built soon by Moon and went that route (especially since Jeff at CDI passed and you can’t get his version of the FN bottom metal that takes the AI mags/his work on the action to take the AI mags).

I have half dozen or more rifles that run the aics bottom metal and I like to not have to use a different mag. I also think that AI mags are a superior magazine to the FN dbm (at least most manufactures of them). I have an spr now that will eventually be AI bottom metal at some point.

 

[Waorani]

Pics from old CDI site.

 

[Geno C.]

This is straight from Jeff at cdi

 

[Basher]

This is straight from Jeff at cdi View attachment 7255750

@Geno C. if you have the full .pdf, would you be willing to share it? I have an FNH action that I eventually want to get a CDI DBM for (I realize I’ll have to track it down on the used market at this point), and will need this info to get the action modified correctly. I’d love to have as much info as I can so it‘s done right!

 

[Geno C.]

@Geno C. if you have the full .pdf, would you be willing to share it? I have an FNH action that I eventually want to get a CDI DBM for (I realize I’ll have to track it down on the used market at this point), and will need this info to get the action modified correctly. I’d love to have as much info as I can so it‘s done right!

Pm me your email and I’ll forward it to you

 

[Healy]

Has anybody been able to use the fn kit with 300wsm?

 

[7WSMShooter]

@Healy
Yes. 300 and 7WSM. Once it’s set up right it feeds great.

 

[Healy]

@Healy
Yes. 300 and 7WSM. Once it’s set up right it feeds great.
View attachment 7255821

Are you just adjusting thE feed lips or using other mags with the bottom metal? Thanks

 

[7WSMShooter]

Im using accurate WSM mags. And yes, the feed lips were adjusted slightly so I would get perfecting feeding.

 

[jetmd]

Geno C. where did you get that info?

 

[Geno C.]

Has anybody been able to use the fn kit with 300wsm?

I run 300wsm in the tbm kit and it works fine once the mage lips are adjusted

 

[Geno C.]

Geno C. where did you get that info?

I’ve saved it from when Jeff was still around.

 

[Geno C.]

Email sent to a few guys. For any else; he told me to cut .230” deep and make it just wide enough to clear the mag. I had him do one and also had Lee Gardner done one and did another myself. It’s pretty easy.

 

[Geno C.]

There might not be any cdi right now but if we got an order together, maybe xlr would do another run

 

[stello1001]

There might not be any cdi right now but if we got an order together, maybe xlr would do another runView attachment 7256329

I'd be interested just not in that particular chassis...

 

[Geno C.]

I think the evo was the only one they ever made for the 70

 

[Basher]

An Element or Envy would be nice. I’ve never been real hot on tube guns or chassis like the Evo, to be honest.

 

[7WSMShooter]

I tried to get them do an inlet on one of the other chassis and that just went nowhere
?

 

[jetmd]

I would like to see an MPA chassis for a Win70/FN

 

[Messmaker]

I just dug this pic up that helps some but doesn’t give a depth.