6 replies to this topic

[BobS761]

Shooting 2 XDm 40's 4.5" barrel, and an XD Tactical, all bone stock, in production. My goal is making 135-145 PF, for all three. Don't want to get crazy here.
Thanks,
B

[Artsville]

Shooting 2 XDm 40's 4.5" barrel, and an XD Tactical, all bone stock, in production. My goal is making 135-145 PF, for all three. Don't want to get crazy here.
Thanks,
B

Are they new? I had a new 5" tactical not cycle but it was very new. I have had CZ brand new and cycle really well with no failures. My service xd with new spring i had to bump the charge just a little as i would get a stovepipe every now and then. You could just load to about 140pf....Run them in everything and then slowly work your loads down. 140pf is really not that much more to control.

I run short 1.131 with N320 at around 3.7-4.0gr 180gr...3.7gr is right around 132pf in my 4" xd.

art

[chevyoneton]

I ran 3.5 grains of Titegroup behind a 155 grain RNL bullet in my .40 XDm 3.8 with no issues. I had stepped up to the same charge behind a 180 grain TCL by the time I got my 5.25 (also in .40 of course). I have not changed any springs and they both functioned fine. I have ran several thousand of both loads so feel comfortable recommending the stock spring. .40 minor is sweet, I like the way it shoots and watching the videos of the muzzle just slightly rising during recoil and quickly settling back on target.

[buller01]

If you load to a 140PF you should be able to run the stock spring without issue.

[Duke Nukem]

I hate to go against the grain but I say get a 14lb.
It will run with the factory spring, but do this test.
Lock the unloaded empty guns slide back, then take a shooting grip, then get a sight picture on something safe.

Hit the slide release and keep your eyes on the sights. I bet your sights are now 5 inches lower than your target.
With a 14 the gun stays flat.

[RIIID]

I hate to go against the grain but I say get a 14lb.
It will run with the factory spring, but do this test.
Lock the unloaded empty guns slide back, then take a shooting grip, then get a sight picture on something safe.

Hit the slide release and keep your eyes on the sights. I bet your sights are now 5 inches lower than your target.
With a 14 the gun stays flat.

That might sound good but when you are firing the gun the front sight has risen when the slide starts to go forward so ideally when the slide returns your sight picture should be good to go. If you have to push the front sight down your spring is too light for the load you are shooting. If you have to raise the front sight back up for a good sight sight picture your spring is too heavy for the load you are shooting. Now for the XD/m platform you have two springs that oppose each other, if the firing pin spring can pull the slide back out of battery that is not acceptable. I've done it and seen it happen to others when doing a hard reload or a jarring motion that can cause the slide to move back ever so slightly but enough for the firing pin safety block to stop the forward movement of the firing pin. If this happens you have two choices, short stroke the slide to reset the firing pin or chamber a new round.
So why would one want to push the limit of a too light recoil spring that could cause a malfunction. I don't recommend anyone going below 16# on the recoil spring on any of the Tacticals or 4.5-5.25 M's. I also recommend not going below 135 power factor, lots of people search for the lightest load thinking lighter must be better. In the case of the XD/m platform lighter isn't better.

One other thing one can do to make their gun more controllable is get their muscles built up in their arms and upper body, this can be done at no cost.
Rich

[Duke Nukem]

There is no way you need a heavy spring to help recover from the brutal recoil of .40 Minor, 40 minor recoils less than 9mm minor.
Its like shooting a staple gun. If your muscles are too weak for 40 minor, needle point may be a better past time.

In my experience the Wolff 14lb spring is longer than the factory spring and even though it says 14 its really about 16 or 17 installed in the gun.

That might sound good but when you are firing the gun the front sight has risen when the slide starts to go forward so ideally when the slide returns your sight picture should be good to go. If you have to push the front sight down your spring is too light for the load you are shooting. If you have to raise the front sight back up for a good sight sight picture your spring is too heavy for the load you are shooting.

One other thing one can do to make their gun more controllable is get their muscles built up in their arms and upper body, this can be done at no cost.
Rich