Took my custom 17L to Morro Bay.

They moved the steel back to 20 yards, which is a definite challenge.

My first mag would not seat properly. I released the slide and a round chambered, but the mag dropped. Didn't happen the next 30 mags.

I also had two times where brass appeared to not clear the chamber and the (fail to eject). I am wondering if I need to use a more powerful recoil spring for the heavy slide.

Thoughts?

senorgrand wrote: Sat Mar 16, 2024 1:17 pm Took my custom 17L to Morro Bay.

They moved the steel back to 20 yards, which is a definite challenge.

My first mag would not seat properly. I released the slide and a round chambered, but the mag dropped. Didn't happen the next 30 mags.

I also had two times where brass appeared to not clear the chamber and the (fail to eject). I am wondering if I need to use a more powerful recoil spring for the heavy slide.

Thoughts?

What is a 17L?

Sorry, Glock. Unlike the stock 17L, mine doesn't have a cut out and the slide is stainless, so it weighs more. Just wondering if a stiffer recoil spring would be the ticket

A stronger recoil (guide) spring will make extraction/ejection more difficult. They are used to compensate for higher power ammo so as to not batter the gun components. If the gun is all factory there could be an issue with the rounds not having enough umph to work the longer, heavier slide. If the factory has any recommendations as to a lighter recoil spring you might start there. There are aftermarket spring kits for just about any gun you can think of for solving problems or just making the thing work better to your liking.

https://ndzperformance.com/ndz-rpr-guid ... 17-g3-rpr/

ty!

Before you mess with the springs - try different ammo. What were you firing?

Competition guns often have weaker recoil springs optimized for lighter bullet weights at lower muzzle velocities. The idea is to reduce recoil and get back on target faster. Springs operate by Hooke's Law, force x displacement of the spring - if there's less force, the spring doesn't compress as far. Hotter charges or heavier bullets should push the spring back further, but you'll get more recoil. Run too hot, you batter the slide, and that's where you need the stronger spring.

Since you're running a longer slide, you have more mass to push back and the spring needs to be longer, so there's a good chance it isn't the right one for the ammo you were running. Still, you might find a bullet weight running at the right speed to make it work without replacing it.

The doc prescribes more range time, with more variation in ammo.

I found an adjustable spring that I'm going to try. This slide it pretty massive.

I only have like 2000 rounds of 9mm - all reman cheap stuff from the same batch

bought the NDZ adjustable recoil spring and will try going down a step