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Discussion Starter #1
If anyone is interested in shooting reduced power loads in the M&P, you might not be aware that aftermarket guide rods and springs for the Glock 17 fit the M&P. I'm running a 13# ISMI spring in my M&P and just received an 11# ISMI spring from Brownells to try in my wife's M&P.



--Lin



Edited to add that a report on the 11# spring is posted below.

--Lin
 

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good info, I might have to look into that!
 

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rledwards said:
If anyone is interested in shooting reduced power loads in the M&P, you might not be aware that aftermarket guide rods and springs for the Glock 17 fit the M&P. I'm running a 13# ISMI spring in my M&P and just received an 11# ISMI spring from Brownells to try in my wife's M&P.



--Lin
Wow - Didn't know that. Thanks for letting us know.



From the Wolff Gunsprings Site:



http://www.gunsprings.com/SemiAuto/GlockNF.html#G17%20Recoil



This is a copy of the information from Wolff:

(For Glock 17)



* Reduced Power...: 12, 14, 15 and 16 Lb.

* Factory Standard.: 17 Lb.

* Extra Power.........: 19, 20, 22 and 24 Lb.



Above recoil springs.....Stock No. 437xx....$ 7.89 ea

Please Note: Replace the "xx" in the stock number with the pound rating of spring.



-Mike
 

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Can you reuse the factory guide rod and replace the springs or do have to replace the guide rod with a glock guide rod?

Same subject how do you remove the recoil spring from the factory guide rod?

THanks
 

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Just letting everyone know, ---disclaimer---



putting not enough power in a case can cause detonation instead of burn, be very careful when loading reduced power loads!!!
 

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Jester said:
Just letting everyone know, ---disclaimer---



putting not enough power in a case can cause detonation instead of burn, be very careful when loading reduced power loads!!!


You know, I have seen lots of people say that. Haven't seen one person actually provide an example of it happening.



I think the general concensus is that it's a myth with some real-world mistakes being misdiagnosed.
 

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Jester,

I fully understand the disclaimer and agree with posting it here.



BUT I have to agree with Raz-0 here. I Know Speer did some research on this and was absoulty unable to reproduce the results.



I personally believe this to be people unwilling to admit they may have made a mistake in their reloading.



Dan



ps If we need to have a discussion/ debate on this Let's start another thread. I am sure I could dig up my info again.
 

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I've seen in in a 38 special that the guy wanted a soft target load. It blew the top of the cyl off, and busted up his hand pretty bad.



Wouldn't say it if I hadn't seen it for myself.
 

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Jester said:
I've seen in in a 38 special that the guy wanted a soft target load. It blew the top of the cyl off, and busted up his hand pretty bad.



Wouldn't say it if I hadn't seen it for myself.
Can he be 100% sure that he didn't double charge the load?
 

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Discussion Starter #11
Jester,

Are you saying you (or he) are positive that there is no chance he double charged a case?

--Lin
 

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I am 100% sure. This was my cousin. He used to compete with the 38, after that mishap he went 1911.



We are talking 2 gr or less, and even if he double charged it, it would still be a full charge. Was a long time ago.
 

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Discussion Starter #13
rledwards said:
If anyone is interested in shooting reduced power loads in the M&P, you might not be aware that aftermarket guide rods and springs for the Glock 17 fit the M&P. I'm running a 13# ISMI spring in my M&P and just received an 11# ISMI spring from Brownells to try in my wife's M&P.



--Lin


OK, here is the report on the 11# spring. Too light! The 13# works great and recoil is soft. The 11# makes the recoil feel sharper.

Note that this is with reduced loads, 147 gr. 9mm subsonic loads at 130 power factor.



--Lin
 
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