Get some of each! They are not too expensive. That way you can swap for the ammo impulse your intended on using. Higher impulse ammo also tosses the brass in a low earth orbit, the extra power springs tend to help them stay a little closer in. Some have had issues with certain types of aftermarket springs in the g-20's, so check and search to see who is getting best results with what type. Maybe some one could shed more on the G-20 RSA for you.
I use the WolfF Gun Springs two piece recoil rod and dual 21 lb spring set on my Glock 29. I also use the 22lb on my S&W 5" guns.
I had the same thought before I put together my 6" G20LS. I found that even light 40 powered 10mm reloads functioned fine even with the 22# spring. The G20LS weighs about 25% more than a factory slide, so that slows down the cycling even more. You can get ISMI springs for $8 shipped on eBay, so they're more than cheap enough to just buy a few & calibrate your gun the way you like it.
I ended up buying (2) SS captured guiderods, and setting them up for different purposes. I have the 22# setup for the hot 10mm stuff, and a 13# setup for my 40 Major USPSA loads. The factory RSA does just fine with most 10mm ammo (even the hot stuff), so I'd just run that for IDPA & a Extra Power spring for the heavy stuff.
I ended up buying (2) SS captured guiderods, and setting them up for different purposes. I have the 22# setup for the hot 10mm stuff, and a 13# setup for my 40 Major USPSA loads. The factory RSA does just fine with most 10mm ammo (even the hot stuff), so I'd just run that for IDPA & a Extra Power spring for the heavy stuff.
I think your on the right track. I run a 13lbs that stays with my .40 barrel and run the stock spring for all my 10mm stuff. To be honest with full power (200gr @1200) stuff both the stock spring and a ismi 24 the brass flew about the same(far), so I just run the stock one.
I've got 22lb setups in all my 10MM's and function has been 100% with hot/hot, and target loads as well. I even bought the variety weight spring pack, and have only used the 22 pounder.
I've always used a 20lb spring with both my 10mm 1911's AND Glocks. That being said, I think the 20lb is perfect in a 1911, even for super hot loads, but I think the G20 can take a bit heavier spring with no ill effect due to design differences.
Perfect 10mm setup with....
1911: flat bottomed firing ping stop and 20lb recoil spring
Glock: 22lb recoil spring (since there is no firing ping stop)
I put a 23# on my g29 because I thought I felt the slide slamming back too hard with full power Underwoods. But then muzzle flip seemed to go up. I dropped to a 21# and it seems to work ok. Get a multi-pack from Wolff, like others have said they are cheap.
Both springs have shot 10mm and .40 cal with no jams though.
I have a whole assortment I used for testing. to be honest I dont know there is a need for the heavier spring under normal circumstances with less than nuclear loads, unless you see battering of the frame. I actually ended up going with a 15# spring with my compensator, and could go lower to 13#. the 20# gave me malfs with the comp.
Lemat, i have used the 21 and 22 lb springs without issue even with the 40 short and week popcorn fart loads. But if I were to shoot a steady diet of weak 10 or standard 40 I would just put the stock spring in.
Lemat, i have used the 21 and 22 lb springs without issue even with the 40 short and week popcorn fart loads. But if I were to shoot a steady diet of weak 10 or standard 40 I would just put the stock spring in.
Lemat, i have used the 21 and 22 lb springs without issue even with the 40 short and week popcorn fart loads. But if I were to shoot a steady diet of weak 10 or standard 40 I would just put the stock spring in.
Probably not, but we can sure talk about how to do it until we're blue in the face! :lol: Didn't know you were over here too, don't tell the guys. :lol:
I'm planning on running it in some matches next season. No reason to make 'em even close to nuclear, so I figure somewhere around 1100fps. I'm thinking around 9.5-9.8gr of Blue Dot might be just about right.
Probably not, but we can sure talk about how to do it until we're blue in the face! :lol: Didn't know you were over here too, don't tell the guys. :lol:
I'm planning on running it in some matches next season. No reason to make 'em even close to nuclear, so I figure somewhere around 1100fps. I'm thinking around 9.5-9.8gr of Blue Dot might be just about right.
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