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 Post subject: Re: My handgun hunting thread...
PostPosted: Thu May 04, 2017 7:06 pm 
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Joined: Tue Oct 28, 2008 1:00 am
Posts: 2284
Location: Tennessee
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.

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 Post subject: Re: My handgun hunting thread...
PostPosted: Fri May 05, 2017 3:04 pm 
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Joined: Tue Oct 28, 2008 1:00 am
Posts: 2284
Location: Tennessee
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.

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 Post subject: Re: My handgun hunting thread...
PostPosted: Thu May 11, 2017 5:53 pm 
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Joined: Tue Oct 28, 2008 1:00 am
Posts: 2284
Location: Tennessee
Got the optic mounted today...just waiting on the barrel.

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 Post subject: Re: My handgun hunting thread...
PostPosted: Thu May 11, 2017 6:20 pm 

Joined: Tue Jul 28, 2015 11:10 am
Posts: 367
Looks good!


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 Post subject: Re: My handgun hunting thread...
PostPosted: Thu May 11, 2017 6:29 pm 

Joined: Fri Apr 14, 2017 7:33 pm
Posts: 41
Location: Central Pa
Heavier recoil springs can also increase velocity. If you're stuck on using the factory one you should get some slide buffers.


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 Post subject: Re: My handgun hunting thread...
PostPosted: Mon May 15, 2017 8:12 pm 
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Joined: Tue Oct 28, 2008 1:00 am
Posts: 2284
Location: Tennessee
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.

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 Post subject: Re: My handgun hunting thread...
PostPosted: Tue May 23, 2017 11:50 am 
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Location: Tennessee
Got a shipping notification from KKM today...

Looks like the 7" barrel is on its way.

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 Post subject: Re: My handgun hunting thread...
PostPosted: Tue May 23, 2017 2:33 pm 

Joined: Fri Apr 14, 2017 7:33 pm
Posts: 41
Location: Central Pa
KKM is good stuff!


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 Post subject: Re: My handgun hunting thread...
PostPosted: Fri May 26, 2017 4:24 pm 
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Location: Tennessee
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...

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 Post subject: Re: My handgun hunting thread...
PostPosted: Fri May 26, 2017 4:27 pm 
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Location: Tennessee
756 ft. lbs. at the muzzle

518 ft. lbs. at 100 yards.

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 Post subject: Re: My handgun hunting thread...
PostPosted: Fri May 26, 2017 4:55 pm 
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Location: Tennessee
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.

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 Post subject: Re: My handgun hunting thread...
PostPosted: Sat May 27, 2017 2:42 pm 
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Location: Tennessee
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

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 Post subject: Re: My handgun hunting thread...
PostPosted: Sat May 27, 2017 2:43 pm 
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Location: Tennessee
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.

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