[Grand Power in the US: best time to purchase?]

Maybe you GP guys can help me out.

I Picked up an X-Cal recently.

It came with the shortest recoil spring installed.

I want to make sure I understand the spring applications.

The flat wire spring is for heavy +p loads?

The longer round wire spring is for standard loads and best for 115 and 124gr bullets?

The shorter spring is for light loads and best for 147gr reloads?

Have I got it right?

Also - anyone know the fiber optic rod diameter?

Thanks,

[M&P 40 Pro Barrel Life]

I have been running an M&P Pro in 40 Minor for Production.

Was wondering if I can expect to get a longer barrel life running minor ammo at about 133 - 135 power factor.

Loads are 180gr platted @ about 750fps.

Have about 17,000 rounds through it. Still seems accurate. Actually have not replaced a thing on, including recoil spring.

I do take good care of it - clean and oil/grease about every 1,000 rounds.

Was also wondering if it is true that a barrel will loose velocity as it wears out reducing the power factor?

Appreciate any insight.

Thanks

[M&P 40 Pro Failure to Feed]

Hello All,

First post in this Forum. Lots of great information in here.

I have a new M&P 40 Pro that is having failure to feed issues.

Round is getting stuck on the feed ramp. Not a mag problem - happens with several.

It is worse with lighter loads which I can understand with everything being tight and stiff recoil spring in a new pistol.

But, I have seen a couple posts in here for the same issue where it was suggested that shorter COL may be the issue.

What COL are people using for the M&P 40 Pro. I have been using 1.125 (getting 1.122 to 1.128 variance).

Should I push it out to 1.135 or even a little longer 1.140?

Suggestions are much appreciated.

Thanks,