[M1A Shooter]

i know that a metal guide rod is legal in ESP but i would like to load my 40 down to minor power factor but would need a lighter recoil spring. is there a polymer guide rod available that is not captured? or is there a way to modify the factory guide rod? looking to use an IMSI flat wound spring similar to factory.

 

[FatPants]

I believe you can change the guide rod if you do it for reliability, but not if you do it for adding weight. Stupid, I know.

 

[M1A Shooter]

the rule book for SSP states "Guide rods made of a material different from the factory part it replaces" as #4 of the excluded modifications.

 

[DannyR]

Your Glock 40 uses the same recoils spring assembly as a Glock 9mm, and will function with a PF as low as 125. I loaded my 40's to a PF of 140.

 

[M1A Shooter]

have read several writeups stating a 13-14lb recil spring at 130pf.

would you care to share your loads for the 140pf?

 

[DannyR]

180-gr Winchester FMJ over 4.0-gr of WST, Federal primer, OAL 1.135 inches. 790fps average, PF 142. Stock recoil spring.

 

[M1A Shooter]

awesme. thanks. which model are you getting those numbers from? 23, 22, 35?

 

[DannyR]

Actually, a G24C.

 

[Dennisr1977]

What is the pf number I keep seeing being referenced? I just started shooting IDPA, but haven't seen this mentioned anywhere but here.


Outdoor Hub mobile, the outdoor information engine

 

[washabra]

I shoot SSP with a Glock 34 and I use a Jager Polymer guide rod. This guide rod is IDPA legal and the spring weight can be changed. Below is a link to their website. Good Shooting.


http://jagerproducts.com/index.php?main_page=product_info&cPath=35&products_id=93

 

[Meathead9]

I shoot SSP with a Glock 34 and I use a Jager Polymer guide rod. This guide rod is IDPA legal and the spring weight can be changed. Below is a link to their website. Good Shooting.


http://jagerproducts.com/index.php?main_page=product_info&cPath=35&products_id=93

This ^^^

I also run a Jager polymer guide rod in my Production/SSP gun.


.

 

[DannyR]

PF stands for Power Factor, and is computed by multiplying the bullet weight times the muzzle velocity and then dividing the product by 1,000.

Example: 147gr x 900fps = 132300/1000 = 132.3

 

[GRT45]

What is the pf number I keep seeing being referenced? I just started shooting IDPA, but haven't seen this mentioned anywhere but here.

Here is a reference for IDPA that provides a table of bullet weight and minimum velocity to meet the Power Floor for each IDPA Division: IDPA Power Factors

 

[DannyR]

The greater the PF number, the greater the power and perceived recoil.

IDPA has a minimum PF of 125.00 for SSP Category

GSSF has no minimum

USPSA defines minimums for minor and major calibers, except there is (or was) none in Production category.

 

[BuckyP]

For what it's worth, I run a GLOCK 35 at about a 132 power factor. Shoots softer than most 9mms out there. Running up to 140 almost defeats the purpose, or so it would seem. :dunno:

My load, 180g bullet over 3.1g Clays.

I run the 13 pound ISMI flat wound spring. I have them on both the Jaeger guide rods as well as the stock guide rod. Getting them on the stock rod is tricky though.

 

[BuckyP]

USPSA defines minimums for minor and major calibers, except there is (or was) none in Production category.

You do have to make minor power factor in production, or you shoot for no score. Anything above minor is scored minor in production, regardless if you also make major.

 

[MrVvrroomm]

I run a Gen4 22 with oem recoil spring. I'm shooting 180gr fmj w/3.5gr Titegroup. It makes about 127pf. I'm shooting ESP, but you could run this same load in SSP.

I've never had a malfunction of any kind with this load in this gun.

I have another Gen4 22 that I run USPSA Limited/Lim10. It is set up with the same oem recoil spring with major ammo and it runs like an open sore.

 

[M1A Shooter]

i have seen tite group mentioned very often. 3.5gr for minor and 4.5gr for major. havent tried it out yet but may look into a few different loads listed. thanks for the link to the jaeger rod, if the factory setup doesnt work well enough, i will try the jaeger.

:wavey:

ETA: is the 3.5gr of TG with a lead bullet or jacketed? that close to minimum and a jacketed bullet could slow it down just enough. im shooting Xtreme plated from TJConevera. i was told by someone who uses the same in 10mm commercial ammo that its a harder or thicker plating than berry's or the like and can be loaded to jacketed specs.

 

[MrVvrroomm]

180 fmj = full metal jacket. I am using Speer 180gr FMJ's.