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 Post subject: Loads for the 16 gauge guys
PostPosted: Sat Apr 03, 2021 9:46 am 
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Location: Central ND
I sent in two different loads to Precision Reloading LLC. Here are the loads and the results.

#1

Federal 2 3/4" 16 ga. hull w/paper basewad
Winchester 209 primer
16.0 grains 700-X powder
DownRange DR-16 wad
7/8 oz. # 7 1/2 West Coast magnum lead shot
Crimp Depth - .060" - .065"
Crimp type - Fold
Wad column seating pressure - 30 lbs.

Shot String - 6 rounds

Velocity

Average - 1260 FPS
Hi - 1275 FPS
Lo - 1245 FPS
ES - 30 FPS
Sd - 11 FPS

Pressure

Average - 8163 PSI
ES - 1160 PSI
Sd - 470 PSI

This one is perfect for me just the way it is. I couldn't have asked for anything better.
_______________________________________________________________

#2

Winchester 2 3/4" 16 ga. hull w/plastic basewad (Cheddite)
Federal 209A primer
25.0 grains Alliant Steel powder
TUWGS16 (B & P plastic over powder seal) + 16 ga. .028" over shot card + 1 1/4" X 2 1/8" .0075" Mylar + 16 ga. 3/8" felt wad
1 1/4 oz. # 5 Lawrence magnum lead shot
18.0 grains - Precision Reloading PSB Buffer
12/16 Gauge Precision Reloading Tight Seal
Crimp Depth - .060" - .065"
Crimp type - fold
Wad column seating pressure - 30 lbs.

Shot String - 10 rounds

Velocity

Average - 1271 FPS
Hi - 1288 FPS
Lo - 1258 FPS
ES - 30 FPS
Sd - 9 FPS

Pressure

Average - 11,602 PSI
ES - 2000 PSI
Sd - 602 PSI

I built the above load for turkey hunting. I guessed that I would be close on the pressure side, but I didn't think the velocity would be that high. For a turkey load I am going to change the powder drop to 23.0 grains. That should bring the velocity down around the 1200 FPS range.

I will chrono and pattern this load with 23.0 grains of Steel and post the results.

Since I shoot relatively modern guns I wouldn't have a problem shooting this load using 24.5 grains of Steel powder. It might make a very nice second shot for upland birds.

If you are uncertain about the loading sequence of this load it goes like this:

Plastic gas seal, overshot card, mylar wrap, felt wad, shot, buffer, Tight Seal, crimp.

The overshot card on top of the plastic gas seal might seem stupid, but it provides a nice flat surface to support the felt wad.

No question that this load requires a lot of steps to reload. I developed this load back about 21 years ago as a 1 1/8 oz. buffered Bismuth load, before we had a one piece plastic wad. The load was published in the Blanks to Supersonics manual. I didn't feel like messing around with the B & P one piece plastic wad as I had no baseline to work from.



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Mark

aka Mr. Tactful. Common sense no longer appears to be common.
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 Post subject: Re: Loads for the 16 gauge guys
PostPosted: Sat Apr 03, 2021 8:56 pm 
Crown Grade

Joined: Wed Nov 09, 2005 3:07 am
Posts: 2289
Location: Paris,Illinois
Thank you {hs#


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 Post subject: Re: Loads for the 16 gauge guys
PostPosted: Sat Apr 03, 2021 9:04 pm 
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Joined: Thu Jul 20, 2006 10:07 pm
Posts: 268
Location: Weld County, CO
Thanks for sharing.

On your turkey load with 11,600 and 2000es, do you know whether it was 13,600 or 9,600 at the extreme spread? If the former, I would be a little scared of this load.


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 Post subject: Re: Loads for the 16 gauge guys
PostPosted: Sat Apr 03, 2021 9:39 pm 
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Joined: Thu Mar 05, 2009 10:56 pm
Posts: 7927
Location: Central ND
AJ-M12,

13,600 PSI or 9600 PSI would pretty much be improbable readings, to have an average of 11,600 PSI with an SD of 602 PSI.

Chamber Pressure

The ten loads as tested:

1. 11,930 PSI
2. 10,630 PSI
3. 12,080 PSI
4. 11,840 PSI
5. 11,140 PSI
6. 11,700 PSI
7. 11,790 PSI
8. 11,440 PSI
9. 10,840 PSI
10. 12,630 PSI

Average of 10 loads - 11,602 PSI

I am not suggesting that anyone use the loads. I am merely offering the data.

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Mark

aka Mr. Tactful. Common sense no longer appears to be common.
NSCA#544066


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 Post subject: Re: Loads for the 16 gauge guys
PostPosted: Sat Apr 03, 2021 10:03 pm 
Tournament Grade
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Joined: Thu Jul 20, 2006 10:07 pm
Posts: 268
Location: Weld County, CO
Got it. Yes, it has been a long while since I did those calculations. I can see your point. Thanks for the extra data.


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 Post subject: Re: Loads for the 16 gauge guys
PostPosted: Sat Apr 03, 2021 10:29 pm 
Field Grade

Joined: Mon Jan 13, 2014 3:56 pm
Posts: 56
Tag. Thank you.


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 Post subject: Re: Loads for the 16 gauge guys
PostPosted: Thu Apr 08, 2021 9:13 pm 
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Joined: Thu Mar 05, 2009 10:56 pm
Posts: 7927
Location: Central ND
An update.

I chrono'd the 1 1/4 oz. load of buffered 5's using 23.0 grains of Steel powder.

The results were:

Average velocity - 1,157
Hi - 1,167 FPS
Lo - 1,149 FPS
ES - 18 FPS
Sd - 8 FPS

Better than I had hoped.

I also shot some patterns at a measured 30 yards.

87% pellet hits in the 30" circle
45 pellets in the annular ring
141 pellets in the 21" core
Central thickening 3.133 : 1

Pretty awesome load in an 870 with only .018" of choke.

Might load up a few loads using 6's and pattern it again.

____________________________________________________________________

I checked the 7/8 oz. load for velocity.

My average was 1,239 FPS compared to Precision Reloading's 1,260 FPS. My readings are within 21 FPS.

I also shot my reference load, that has an average of 1,204 FPS, today I had 1,202 FPS as an average.

I'm good with that, on both counts.



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Mark

aka Mr. Tactful. Common sense no longer appears to be common.
NSCA#544066


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