Out in left field alone reloading 9mm +P 68gr

[Stopsign32v]

Loading up some 68gr Xtreme Defender 9mm and I have found load data for Tite Group going from 4.7g to 5.5g.

4.7g would not even cycle my M&P Shield X.

(There also is load data for CFE Pistol @ 6.2-7.1 ***6.2g would not cycle the slide, fte/ftf every time. But 6.5g ran flawlessly***)

So clearly the light loads do not work in the Shield. But initially I was mainly concerned with cycling. The 6.5g running good gave me confidence I could proceed with more loading. Anyways I would like to get up to +P territory but I cannot find any load data for it.

5.5g of Tite Group has a pressure of 33,700 and +P top end is 38,500 from what I've read. The Shield X is rated for +P ammo but I cannot find any data to support loading for it.

Is there any way to go forward loading for this?

[JohnForrest]

I am going to load that bullet in 357 Sig one of these days

[Barry54]

I’m of the opinion smaller pistols need hotter loads to reliably cycle.

Are you after +P for cold weather use or high velocity?

Lehigh defense shows a higher charge with CFE pistol than what you claim to have found. Personally I’d work up to max with their data and see how it works. If that’s not sufficient pick the powder they show with the highest velocity.

TiteGroup is not ideal for obtaining the highest velocity.

[fredj338]

First, starting data rarely gives reliable functioning. Next up, TG, not my choice for even something that light. From the lehigh site:
STARTING LOAD MAXIMUM LOAD
POWDER GRAINS VELOCITY GRAINS VELOCITY
Longshot 8.0 1,500 8.5 1,575
Silhouette 8.5 1,630 9.2 1,690
Alliant BE-86 7.3 1,505 7.9 1,540
CFE Pistol 6.9 1,540 7.4 1,605
Accurate No. 7 11.0 1,595 11.5 1,640
True Blue 7.3 1,450 7.7 1,505
Titegroup 5.1 1,420 5.5 1,525
Hodgdon HP-38 6.2 1,505 6.6 1,570
Accurate No. 2 6.6 1,520 7.0 1,565