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Old March 14, 2013, 10:54 AM   #1
n1911
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.45 ACP Reloading Question

Hi all,

I'm new to the forum and thought it'd be a great place to get some needed information. I've been reloading for a few months, mostly 9mm and some .243.

I'm going to start reloading .45 acp, and will be using Vihtavuori N320, and would like to try out Rainier's 200 gr RN. Viht's manual only shows 185 gr FN load data, and I can't find the proper min/max loads with the above combination, neither on Rainier's site or Vihtavuori.

Hoping someone has experience and knowledge to share.

Thanks!
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Old March 14, 2013, 12:44 PM   #2
temmi
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sorry no help here

someone will be along soon

good luck & welcome

Snake
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Old March 14, 2013, 12:51 PM   #3
Wyoredman
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It is perfectly acceptable and safe to use data for a different but similar bullet. Use a manual from a different manufacture, find their 200 gr RN (you didn't specify if it was lead or jacketed - it does make a differance) and start at the that manuals minimum load and work yourself up.

Be aware of any pressure signs as you work up.

Seat the bullet to its cannuler, or to where it will fit the chamber of your pistol.

ETA: If the Rainier bullet is a plated bullet, use data for a a lead RN bullet.
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Old March 14, 2013, 01:15 PM   #4
JRH6856
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QuickLoad gives the following data. I have no experience with either the bullet or the powder and have not tested these loads. This is provided for information only. Use at your own risk

Code:
Cartridge          : .45 Auto (ACP) (SAAMI)
Bullet             : .451, 200, RN Rainier
Cartridge O.A.L. L6: 1.275 inch or 32.39 mm
Barrel Length      : 5.0 inch or 127.0 mm
Powder             : 12 Vihtavuori N320

Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.813% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-08.1   64     5.51    933     386   15908   2584    100.0    0.688
-07.3   64     5.56    939     391   16201   2601    100.0    0.682
-06.5   65     5.61    945     396   16497   2618    100.0    0.676
-05.7   65     5.66    950     401   16796   2635    100.0    0.671
-04.9   66     5.71    956     406   17099   2652    100.0    0.665
-04.1   66     5.76    962     411   17406   2669    100.0    0.660
-03.3   67     5.80    968     416   17716   2686    100.0    0.654
-02.4   68     5.85    973     421   18029   2703    100.0    0.649  ! Near Maximum !
-01.6   68     5.90    979     426   18346   2720    100.0    0.644  ! Near Maximum !
-00.8   69     5.95    984     430   18667   2737    100.0    0.639  ! Near Maximum !
+00.0   69     6.00    990     435   18991   2754    100.0    0.634  ! Near Maximum !
+00.8   70     6.05    996     440   19319   2771    100.0    0.629  ! Near Maximum !
+01.6   70     6.10   1001     445   19650   2788    100.0    0.624  ! Near Maximum !
+02.4   71     6.15   1007     450   19985   2805    100.0    0.619  ! Near Maximum !
+03.3   71     6.20   1012     455   20324   2822    100.0    0.615  !DANGEROUS LOAD-DO NOT USE!
+04.1   72     6.24   1018     460   20667   2839    100.0    0.610  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba     69     6.00   1015     457   22184   2671    100.0    0.597  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     69     6.00    953     403   15778   2873     99.9    0.684
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Old March 14, 2013, 05:30 PM   #5
57K
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Use data shown for a similar shaped cast lead bullet. Quikload is a great tool, but your OACL with a 200 gr. RN isn't going to be 1.275" which is max. cartridge length. Do you know how to determine OACL for YOUR pistol? If you loaded to say 1.250", that's not that much OACL variation for the lower operating pressure of the .45 ACP using the lower charges of N320 shown in JRH6856's QuikLoad graphic, but there should be cast lead load data available directly from the Vihta Vouri manual or load guides.
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Old March 14, 2013, 05:48 PM   #6
steve4102
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Quote:
I can't find the proper min/max loads with the above combination, neither on Rainier's site or Vihtavuori.
From Rainier's Web Site.

We, at Rainier Ballistics, recommend using lead bullet load data when loading our bullets. There is no need for adjustment when using lead bullet load data. Our bullets are jacketed using an electroplating process and are softer than traditionally jacketed bullets; hence the recommendation to use lead bullet load data.

If you only have access to traditionally jacketed load data, we recommend a starting powder charge directly between the listed minimum and maximum load, and you may use published load data found in reputable reloading manuals.
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Old March 14, 2013, 06:27 PM   #7
Gadawg88
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VV load guide (available on their website) has the following:

200 LSWC Intercast N320, 4.7 gn min 888 fps, 5.1 gn max 958 fps

200 FMJ CT Hornady N320, 5.0 gn min 855 fps, 5.4 gn max 928 fps
Recommend you verify yourself as safe practice from their site.

Neither of these gives you an exact match, but it should let you get a safe starting point. Get your COL by doing a plunk test. Google it if you are not familiar with the term.

I use 5.1 gn N320 under a 230 gn FMJ FN for what its worth.
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Old March 14, 2013, 09:04 PM   #8
n1911
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Quote:
steve4102
From Rainier's Web Site.
I know they have that statement on website, I guess I just don't know enough as how to relate that to other load data given for different types of bullets.

Quote:
Gadawg88 VV load guide (available on their website) has the following:

200 LSWC Intercast N320, 4.7 gn min 888 fps, 5.1 gn max 958 fps

200 FMJ CT Hornady N320, 5.0 gn min 855 fps, 5.4 gn max 928 fps Recommend you verify yourself as safe practice from their site.

Neither of these gives you an exact match,but itshould let you geta safestarting point. Get your COL by doing a plunk test. Google it if you are not familiar with the term.

I use 5.1 gn N320 under a 230 gn FMJ FN for what its worth.

So it seems like 4.9-5.0 would be a good place to start with the 200 gr RN. For the 9mm i load I run every case through the case gage after sizing/depriming, and then again after the final crimp. All go right in and fall right out, same with the barrel itself. Maybe I'm going overboard w/the checks.

Thanks for the info everyone.
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