Got the Deltapoint Pro... The weights above are confirmed and correct.

The Deltapoint Pro added exactly 1 ounce to the slide weight.

I'm curious to see how much the 7" barrel adds when I get it.

I just confirmed that my G40 is unlocking a little early with warm loads.

Measuring the chamber and the smiled brass leaves no doubt that the slide moved ~.050" before the brass swelled on those warm loads.

This begins at about 7.8 grains of Longshot and 12.8 grains of AA #9 under a 200 XTP ... In my pistol, yours may be different.

I was pretty sure of it before I did the measuring, now I'd bet a weeks pay on it...

The 7" barrel I have on the way should slow the unlocking down a bit. The length of it will add some barrel time and the extra weight of the longer barrel will hold things in place a little longer as well.

Then there's the ounce that I've added to the slide weight too (Deltapoint Pro).... I'm still using the stock spring, with the added length and weight, I believe the stock spring will be fine.

Got the optic mounted today...just waiting on the barrel.

Looks good!


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Heavier recoil springs can also increase velocity. If you're stuck on using the factory one you should get some slide buffers.

I gave in and ordered a new chrono just now...I've had I think 3 ProChrono Digitals in a row now, maybe 4, if you use them, you will eventually shoot them, especially getting long range readings...that is firing through the chrono from 600-1,000 yards.

This last one has been hit 4 times but it has managed to keep working after some reconstructive surgery...at least until a couple of weeks ago when it started misbehaving. It was time to put it out of its misery.

I decided to try something different, but didn't want to spend the $$$ on a LabRadar...OK, I did want to...my wife, however, did not.

I ended up ordering a Caldwell G2 Ballistic Prescison chrono, funny thing...I thought of that inverted design about 20 years ago.

I figured I'd better get one that works before I get the new barrel and blow my fingers off! So far I still have all 10, I'd like to keep it that way.

Got a shipping notification from KKM today...

Looks like the 7" barrel is on its way.

KKM is good stuff!

From the 7" barrel...

12.6 grains of AA9 under a 200 grain XTP, seated at 1.26" oal...

6 rounds....

1,293
1,296
1,293
1,295
1,294
1,296

For an average of 1,295 fps at 15 feet from the muzzle...

True muzzle velocity at the muzzle....

1,305 fps!

And the brass says I could go more...

756 ft. lbs. at the muzzle

518 ft. lbs. at 100 yards.

The new barrel is .8 ounces heavier than the stock barrel....

So I've added 1.8 ounces of mass to the slide assembly.

There are no longer any signs of unlocking early.

The KKM has about .050" more chamber support than stock.

8.2 grains of Longshot, 200 XTP...

Not so good.

1,261 fps...64 fps more than the stock barrel with the same load.

ES 37, SD 15

I think I'm done fiddling around with powders.

AA #9 is gonna be my 10mm powder with 200 grain bullets.

And Power Pistol for everything else (plinking and practice), likely some Unique too, since I have a couple pounds.

I'll burn the Longshot up in some 12 guage hunting loads.... I'm just not liking it much in 10mm.

Got the G40 sighted in today.

From a solid rest I can reliably hit a 12"x12" steel plate at 150 yards...I honestly didn't expect it to come that easily.

I'm confident I can take game with it at 75 yards, maybe even a bit more.

I fired 50 rounds of full power 10mm reloads (200 grain bullets at over 1,300 fps)... I now understand very well why the FBI watered the 10mm down... It's not brutal, but a 9mm it is not!

I'm looking at trigger options... The trigger itself (the part you pull) is uncomfortable to me, my finger is sore after those 50 rounds. The trigger won't be a problem for hunting but it makes it less than ideal at the range.

The trigger pull... Is hard to work with... You try to do a slow steady squeeze and it starts and stops 2-3 times before it goes bang....I don't much like that, looking at spring combos that might help there.

Also.... That's about 70 rounds through the new 7" KKM barrel.

No malfunctions of any kind.... And it is ACCURATE!

A ghost connector will help and doesn't cost much


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I dig your set up.. I got one of the G40's when I retired and the fellas did some trigger work on mine as well..

I like the sight on yours.. Gears are turning now..

13.2 inch pounds....

Torque for the mounting plate to the slide, that is direct from Glock.

I broke a screw on my first attempt... I'd remove the factory applied blue gunk and use a dab of fresh blue Loctite.

Ridgerunner, you have my brain running over time. I'm a 1911 guy. I have a 3" and a 5", 9mm and 45 ACP respectively. I really NEED a 10mm and NEED a 4.25 to make it a full set. I love the 10mm and have since its inception(1983 was a great year for cartridges, pistols, and rifles with the 10mm, 357 max, 7-08, the glock 17, the mini 14, the model 7). Col. Coopers .40 Super is the bees knees. I have been eyeballing several 1911s in 10mm. Top on my list is the DW Silverback followed by the RZ10 but both are spendy. next would be the Colt Delta Elite. I have a Kimber and its awesome so a TLE or the new Camp Guard will likely be what I focus on. both are 5" so the commander will have to wait.

RR - it's been interesting, following your thread. A .40 cal, 200 gr bullet at 1300 fps is impressive.

The accuracy you're seeing is commendable. Looking forward to your hunt reports!

That's a good load with an ES of 3! Blue Dot has been my powder for the 10mm but may have to try some #9.

Thanks guys....

I'm looking forward to some more practice and bullet tests when work slows down a bit.

Blue Dot is an excellent 10mm powder, too many people and load manuals have said so for it to not be true.

I initially went with #9 instead for 2 reasons.... Load density and low flash... Those are 2 things that #9 does better than Blue Dot.

I have the Glock 20 and the Rock River 4.25. I think if I had it to do over again I'd save up for a 6" version 1911. I really like the bronze R1 Remington..Springfield is coming out with one too.

If I were getting a 1911 (or anything else) in 10mm.... It would have to have a 6" barrel... No question.

Otherwise I'd just blow my fingers off trying to get it up to 6" barrel velocity.

Its a hot rod round... I know its probably been done, but why put a 500hp engine in a Yugo?