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Vv 320 And 147g


johes

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Do any of you know why vihtavouri doesn't show 320 used for 147g jacketed 9mm in their reloading guide? I've seen it recommended on this and other forums for 147g and plan on using it with 147g montana golds but wanted to get opinions from some more experienced reloaders before I started. Thanks

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johes,

I asked someone at VihtaVuori that question and here is their response.

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Unfortunately we do not have reloading published data for the 9mm with 147’s and N320. This burn rate is on the fast side for this combination and the factory felt that it would be better served by other powders in our line. N330 will be a great choice for you. I do have a load worked up on a ballistics program that others have found great results with. While this is a mild load and may not be what you are looking for. Thank you for using VihtaVuori and if I can be of further help please contact me. My direct line is 602-549-3525

9mm - 147 Rainier – N320 – Start 2.8 at 795FPS and MAXIMUM is 3.2 at 871 fps

Don Golembieski

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Personally I have found that anything under 3.3g is unreliable in terms of ejection in my 5" XD. 3.3g is still a nice shooting load for me. I have not chrono'd this load yet.

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Do any of you know why vihtavouri doesn't show 320 used for 147g jacketed 9mm in their reloading guide? I've seen it recommended on this and other forums for 147g and plan on using it with 147g montana golds but wanted to get opinions from some more experienced reloaders before I started. Thanks

Here is the 2006 reloading guide page 5 147 and N320

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That load is for a 147 HP/XTP. But most of us shoot RN. In fact I used to shoot Rainiers RN 147 which is exactly what is listed in the book, but only listed with 330 / 340 / 350 / 3N37.

And while certainly it is not advisable to modify one load based on other loads, but I find it intersting that they list N320 for use in a hollow-point 147gr load, and not in a RN 147 load. So much so, that the starting point for that 147 HP/XTP load is 3.1 gr of N320 and my regular load is approx. the same.

I usually load between 3.1~3.3 gr of N320 with the 147 bullets I find reasonably priced, then I chrono everything to be safe. I used to use Rainiers, but have also tried Zeros and Precision Deltas. They all seem to work well for me out of a G17.

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  • 2 years later...
God, I love this forum. I'm about to work up a load with 147-grain Rainier RN and N320. Did a search, here it is.

Good stuff.

I'm thinking 3.2 grains as a starting point for a Glock 17.

LOL...I just hope they sent you the Rainiers for free :P

I spent some time looking for N320 data (here) with various 147gr jacketed bullets and found folks using as high as 3.9gr with an XTP and 3.7gr with a MG CMJ. Since plated bullets develop pressure like lead you should be a long way from max starting at 3.2 with a Rainier 147.

I just got 2K of Precision Delta 147gr FMJ TC's in and made a couple of dummy rounds with them at 1.150" and they seem to feed nicely in my M&P....sort of an interesting profile that's slightly more pointed than it appears in pictures. R,

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Thought long and hard about going away from the reloading manuals when I started loading 9mm. However quite a number of people run N320 with 147s with no ill effects. Hard to find a mention of pressure signs with this combination when loaded to USPSA speeds. So, I tried. No problems so far and I intend to continue.

Gun is a XD-9 Tactical with a stock barrel.

3.4 of N320 behind a Zero 147 at 1.150" OAL. 130pf.

3.6 of N320 behind a Montana Gold 147 at 1.150" OAL. 130pf.

The Montana Gold load shoots just a bit smaller groups than the Zero load did.

I've got Precision Molys loaded to test at the chrono. Note that due to the shape of the bullet the Precision Molys will engage the rifling at 1.150". Had to shorten them up to 1.115" to keep them just a few thousandths off the lands.

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Interesting.

Well, I've loaded up 100 rounds at 3.4. My chrono and I will soon see what we shall see. After that I can dial it in better.

Duane- 3.4 gives me about 131pf with MG 147gr (g34, 13lb recoil spring). 3.6 gives me just over 135pf. I had problems with cycling/feeding with the 3.4gr loads. It will be interesting how yours do.

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That load is for a 147 HP/XTP. But most of us shoot RN. In fact I used to shoot Rainiers RN 147 which is exactly what is listed in the book, but only listed with 330 / 340 / 350 / 3N37.

And while certainly it is not advisable to modify one load based on other loads, but I find it intersting that they list N320 for use in a hollow-point 147gr load, and not in a RN 147 load. So much so, that the starting point for that 147 HP/XTP load is 3.1 gr of N320 and my regular load is approx. the same.

I usually load between 3.1~3.3 gr of N320 with the 147 bullets I find reasonably priced, then I chrono everything to be safe. I used to use Rainiers, but have also tried Zeros and Precision Deltas. They all seem to work well for me out of a G17.

Chris,

what is the OAL?

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Okay, just got back from the Shelton Rifle & Pistol Club's indoor range, and testing out my 147-grain/N320 loads. I loaded up 3.4 and 3.6-grains to test. In addition to those, I decided to also test the 121-grain load I've been using, and to test all three loads through both my Glock 17 and 34, as well. Ambient temperature was 35 degrees Fahrenheit. Elevation was 272 feet. In my notations, "Misc" refers to mixed brass, "Fed 200" is the Federal Magnum Small Pistol Primer. The Magnums were all I was able to find locally in a Federall SPP - and after this testing may wind up being all I ever use again, if I have anything to say about it.

Obviously I'm going to be loading up a lot of 3.4-grain N320 loads in the future.

Gun: Glock 17

Ammo: Rainier 121-gr. RN/4.2-gr. N320//Fed 200/Misc/1.150” (20 rounds)

AV: 1088 HI: 1112 LO: 1070 ES: 42 SD: 10 PF: 131.6

Gun: Glock 34

Ammo: Rainier 121-gr. RN/4.2-gr. N320//Fed 200/Misc/1.150” (20 rounds)

AV: 1104 HI: 1124 LO: 1078 ES: 46 SD: 11 PF: 133.6

Gun: Glock 17

Ammo: Rainier 147-gr. TRN/3.4-gr. N320//Fed 200/Misc/1.140” (20 rounds)

AV: 889 HI: 910 LO: 871 ES: 38 SD: 9 PF: 130.7

Gun: Glock 34

Ammo: Rainier 147-gr. TRN/3.4-gr. N320//Fed 200/Misc/1.140” (20 rounds)

AV: 904 HI: 918 LO: 888 ES: 30 SD: 8 PF: 132.8

Gun: Glock 17

Ammo: Rainier 147-gr. TRN/3.6-gr. N320//Fed 200/Misc/1.140” (20 rounds)

AV: 924 HI: 948 LO: 904 ES: 44 SD: 10 PF: 135.8

Gun: Glock 34

Ammo: Rainier 147-gr. TRN/3.6-gr. N320//Fed 200/Misc/1.140” (20 rounds)

AV: 938 HI: 964 LO: 925 ES: 39 SD: 11 PF: 137.9

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Nearly identical ES and SD across the board is a nice sign. I also find it interesting that in the last four loads the difference between the G17 and G34 is exactly 2.1PF.

I've been happy with my intial results with Solo 1000, but N320 is next on the list. R,

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