22lb vs. 24lb (ISMI) Recoil Spring: Gen 4 Glock 20

[Flankenstein]

I believe Redbaron is correct...the stock RSA may work for you. I would suggest giving it a try.

If not, the 24 pound RSA from Glockmeister has been working without a hitch in my Gen 4 and Underwood ammo.

I think a 22 or 24lb spring would both likely serve me well.

My new question however: any harm with a heavy 24 lb spring slamming the slide home with more force causing problems/premature wear?

I don't completely understand the mechanics and physics at play when the slide returns home.

[4949shooter]

I believe Redbaron is correct...the stock RSA may work for you. I would suggest giving it a try.

If not, the 24 pound RSA from Glockmeister has been working without a hitch in my Gen 4 and Underwood ammo.

I think a 22 or 24lb spring would both likely serve me well.

My new question however: any harm with a heavy 24 lb spring slamming the slide home with more force causing problems/premature wear?

I don't completely understand the mechanics and physics at play when the slide returns home.

Not that I have seen. I have 2400 hundred rounds through my Gen 3 20 and 800 rounds through my Gen 4. I just had a Glock armorer look at both guns and there was no mention of battering or premature wear.

Though....I haven't shot only Underwood, PBR, and Buffalo Bore through them. I mixed in some medium to light stuff as well.

[Flankenstein]

22lb and 24lb ISMI recoil springs on Gen4 Glockmeister SS guide rods came today.

Objectively the stock dual RSA and the 20lb ISMI do NOT feel any different in terms of racking the slide,'

One thing I did notice: Racking the slide w/ the ISMI springs installed was making a funky scratching sound- the spring was scratching the barrel.

Is this normal? I'm not worried about cosmetic wear on the outside of the barrel but the sound was pretty abrasive and did not sound "right".

Glockmeister was out of their SS Gen4 guide rods for a few months because the last batch they had were machined out of spec and had to be remade...I'm hoping this has nothing to do with it.

[4949shooter]

Just make sure the spring is seated properly. The scratching sound you are hearing is probably the spring scratching against the SS guide rod.

You won't notice much of a difference by feel. The difference will come in the performance of your gun with hot ammo. At least that has been my own experience.

[10mmGarand]

[quote

I was pretty sold on the 22lb recoil spring until I read the reports of it being under-sprung by about 2lbs.
[/quote]

This is good to know. I have a 20# ISMI captive RSA right now, but I've just been shooting factory "hot" loads like Underwood and Buffalo Bore. I may step it up to 22 or 24#, if it seems like the guns getting beat up after I start loading this caliber.

[Flankenstein]

Just make sure the spring is seated properly. The scratching sound you are hearing is probably the spring scratching against the SS guide rod.

I took the RSA out and hand compressed a few times and you were right 100% of the noise was coming from the spring scraping against the steel guide rod.
Lubing the guide rod also helped tremendously.

You won't notice much of a difference by feel. The difference will come in the performance of your gun with hot ammo. At least that has been my own experience.

Interesting. I've heard people say it is noticeably harder to rack the slide with a 24lb spring, figured the 22lb would be just a little harder than stock also.

[4949shooter]

You might be able to tell the difference. I noticed it more with my Gen 3 really. I didn't notice much at all with the Gen 4 working the slide by hand.