10mm-Auto

Other Ammunition Calibers => Reloading => Topic started by: Pctechdude on February 03 2017 03:36:43 PM MST

Title: 9mm 147gr XTP Carbine velocity and expansion
Post by: Pctechdude on February 03 2017 03:36:43 PM MST
So since I'm off work, figured I'd pass the time by having fun reloading.

Been wanting to have a good little critter load for around the house and farm out to 50-75 yards.

Yes, I have a 22, but those get boring lol.

I had a pound of vihtavouri 3n38 powder, 147gr xtp's. According to the loading manuals the max charge is 6.9gr of 3n38 with these xtp's for a stated velocity of 1207fps from a 4" barrel [emoji15]

Well in past testing, from a Glock 19, I chronographed these at 1157fps. (average of 10 shots)

This is nothing to sneeze at, especially for a "standard pressure" loading of this weight.

Well, so I inherited a hi-point 995 carbine. I know it's a hi-point, price was right so why not?

Went outside, stuck the chronograph out, fired a few shots. 1407fps, I'll except this!!! Brass, primer everything checks out good.

So I bust out the clear ballistic block. Bullet penetrated and was stopped at the end of the 16 inch block. The petals were just keeping it barely held in place.

It shed about 11 grains of weight. Held together quite well. Expanded to about .530-.540" in diameter.

Hopefully soon will test accuracy!

(https://uploads.tapatalk-cdn.com/20170203/4bca18249cb8bca49d6a28ff30b9a72e.jpg)

(https://uploads.tapatalk-cdn.com/20170203/b9a8e32e938c4592479566857708fbbf.jpg)

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Title: Re: 9mm 147gr XTP Carbine velocity and expansion
Post by: Thomasg20 on September 24 2017 01:15:47 PM MDT
My I ask what oal did you use?
Title: Re: 9mm 147gr XTP Carbine velocity and expansion
Post by: The_Shadow on September 24 2017 07:58:15 PM MDT
Nice!  Well done! :D
Title: Re: 9mm 147gr XTP Carbine velocity and expansion
Post by: cwlongshot on December 04 2017 11:58:18 AM MST
My experiences with carbine barrels for the lower pressured pistol rounds is usually a DECREASE in velocity compared the the hand gun velocities!
You need to run +P or get those pressures up to see velocities improvements.

I have a Camp carbine in 45 and it clocks some good numbers with +P ammo.

The 40's will generally also see velocity improvements across the board, as you will with the 357 SIG & 10MM.

CW
Title: Re: 9mm 147gr XTP Carbine velocity and expansion
Post by: Pctechdude on July 09 2018 05:37:11 AM MDT
Sorry guys I completely lost track of this thread. I was using 6.9gr of vv 3n38 at an oal of 1.142". I also tested these with golden sabers in 147gr. The expansion was pretty wicked and I was shocked they held up.

I've noticed it to that the pistol rounds in a carbine do lose velocity in the longer barrel unless loaded to plus p or with slower powders.

Most of my loads for the carbine are utilized with slower powders for that caliber.

In my 45 pistols I know a plus p loading of silhouette produced some amazing velocities. I had 230gr gold dots clocking over 1000fps with the ramshot load data. Wonder what it would do in a carbine? [emoji16][emoji16][emoji16]

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