"Delta Mod" help

Biggjimm · Post by **Biggjimm** » Tue Jun 05, 2012 10:20 pm

I was going to install a pre-travel set screw as per the delta mod method. The stickie says it can be done to factory triggers but my trigger has quite a bit less "meat" on it than aftermarket ones obviously, but in doing the math if I use a 6-32 set screw I'm only going to have .052" of material on either side of the drilled & tapped hole. Between the threaded hole & the trigger pin hole & from the threaded hole to the lower edge of the trigger face area. If I use a 4-40 set screw I'll have .060" on each side. Will this be enough material left on each side to support the set screw? I think I can get by using a 4-40 tap beings the factory trigger is a softer alloy than the aftermarket trigger referred to in the sticky. I think. I'm trying to keep from buying an aftermarket trigger if I can. My trigger suits me fine other than all that pre-travel so if I can fix that myself with my factory trigger I can use that money to by something else like a sear or ammo or something you know. Thanks again guys as I know somebody or three will set me straight. That's what I love about this site, a wealth of info that you can trust cause 6 or 8 diff. people giving input on a given topic. Thanks. Biggjimm. On a side note if I have to send this gun back to Ruger, will they replace my altered factory trigger with a new one? If so I might go ahead an get a VQ trigger as it'll probly be as cheap as a new one from Ruger or close to it. The reason I ask is my breech face is looking pretty beat up for no more rounds that I've ran through it. I read the posts concerning this & I'm gonna watch it for a while & see if it gets worse. I'd rather have my gun setting on Rugers bench in the winter months than half of the summer anyways. Thanks again. Biggjimm.

Post by **Bullseye** » Tue Jun 05, 2012 10:26 pm

You would be served better to use the 4-40 screw. The clearance is too tight on the factory triggers to go with the larger diameter set screw. Be careful with the 4-40 tap, if you try to cut too much at a time the tap can break. Use plenty of cutting fluid and go slowly when making the new threads.

R,
Bullseye