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 Post subject: 12 ga reloading 3/4 ounce data
PostPosted: Tue Jun 07, 2011 12:27 pm 
Utility Grade

Joined: Tue Jun 07, 2011 11:32 am
Posts: 1
Is there any data available ? I' ve' been using the 7/8 oz that is available and would like to compare them




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 Post subject: Re: 12 ga reloading 3/4 ounce data
PostPosted: Tue Jun 07, 2011 1:55 pm 
Field Grade
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Joined: Mon May 24, 2010 12:29 pm
Posts: 47
I have some data from a Tom Roster article at home. I will try to send it to you tonight.

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 Post subject: Re: 12 ga reloading 3/4 ounce data
PostPosted: Tue Jun 07, 2011 2:00 pm 
Presentation Grade

Joined: Mon Jan 11, 2010 10:37 pm
Posts: 647
Location: colorado
The only listed data from Alliant is for extra-lite powder. I have loaded 7/8 loads of E3 and clays with 3/4 shot with good luck. My wife asked if the gun moved the first time she shot one. I have since gone back to 7/8 since I think they break the clays better, but I keep a box or two around for beginning shooters.


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 Post subject: Re: 12 ga reloading 3/4 ounce data
PostPosted: Tue Jun 07, 2011 4:08 pm 
Crown Grade
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Joined: Thu Oct 30, 2008 12:47 am
Posts: 5374
Location: Covington, WA USA
For Clays, Red dot, 700-X, and Titewad, there are 3/4oz recipes for the HelarcoUS VP-05 wad for the Rem. STS, AA-HS, and Fiocchi hulls listed here:
https://www.ballisticproducts.com/VP05data.pdf

BPI has VP-05's on sale for $88/case, and you can get in on that $7.95 flat-rate shipping and get them to your front door for under $100.

Duster wads also lists a 3/4oz load for the Clear duster in a AA HS as will with e3 and Clays:
http://www.dusterwads.com/clear.htm

Hodgon lists a few 3/4 oz loads as well with Clays in a Remington STS/Gun club too:
Lead Shot 12 3/4 oz. Clays Win. 209 Fed. 12SO 16.4 6400 PSI 1200
Lead Shot 12 3/4 oz. Clays Win. 209 Fed. 12SO 17.3 7000 PSI 1250
Lead Shot 12 3/4 oz. Clays Win. 209 Fed. 12SO 18.1 7600 PSI 1300


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 Post subject: Re: 12 ga reloading 3/4 ounce data
PostPosted: Tue Jun 07, 2011 11:00 pm 
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Joined: Fri Jun 02, 2006 6:42 pm
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Location: The U.P.'s U.P.
Below is a description of the 3/4-oz load developed by forum member Case and tested by a reputable pressure-testing outfit:

Case wrote:
Here's {my 3/4 oz load} — cheap and highly effective:

12 GAUGE PROMO LITE
HULL: AAHS, any Remington; Federals and imports* (*Different wads required)
SHOT WEIGHT: 3/4 oz.
SHOT SIZE: No. 8, 8-1/2 or 9 (Actual average dropped, 315 gr.) (Larger shot will reduce pellet count and performance somewhat.)
POWDER: 16.9 gr. Alliant Promo
MEC POWDER BUSHING: No. 29 (Verify that)
PRIMER: Fiocchi 616 (209), NobelSport, PMC, RIO, Wolf, W209, STS209.
WADS: AAHS, ANY REMINGTON HULL - CB0178-12, Downrange XXL Pink, Gray AA12L; FEDERAL, IMPORT HULL - CB2100-12, Downrange XXL Orange, Fed. 12S0. Those wads satisfy dimensions required for good crimps with the least dishing (almost none) because their shot cup floors are higher from the base edge than other wads. Wads for the straight-walled Federals and imports are also fatter.
~
Average Velocity: 1204
High Velocity: 1221
Low Velocity: 1180
Extreme Spread: 41
Standard Deviation: 16
Pressure: Approximately 8,000 psi and probably less.

CALCULATED RECOIL COMPARISONS FOR A 7.5-POUND GUN:

Alliant's published recipe: 1 oz. shot/18 gr. powder = 15.5 foot pounds recoil
This recipe: 3/4 oz. shot/16.9 gr. powder = 9.4 foot pounds recoil
Difference: 6.1 foot pounds, or about 39% less recoil, with only a 25% reduction in payload.
( Recoil calculator used: http://www.rfgc.org/reload/recoil_calc.htm )

NOTE: This load may or may not cycle semiautos.


ADJUSTING ANY MEC PRESS FOR ULTRALITE LOADS:

Most light loads require NO filler and a MEC press can be easily adjusted for any of them by taking these steps:

1. Lower the crimp starter so the opening left is slightly less than the diameter of a lead pencil.

2. Raise the crimp punch so it does virtually nothing, then lower it gradually until you get a crimp with a minimum of dishing, no hole in the center and about a 1/16" deep rim.

3. Adjust the cam to close any remaining center hole. Lowering the cam plate closes center holes; raising it eliminates swirls.

Your crimps should look like these:

Image
Variety of 12-gauge hulls crimped with a 3/4 oz. payload


Above quoted post taken from this thread: A Strong Case for Case's light 12ga loads!

--Bob


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 Post subject: Re: 12 ga reloading 3/4 ounce data
PostPosted: Tue Jun 07, 2011 11:48 pm 
Crown Grade
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Joined: Thu Jan 11, 2007 8:15 pm
Posts: 2222
Location: Western Washington State, USA
Remington Hulls STS, Gun Clubs, Sport Loads (Downrange XXL Pinks work)

--- 3/4 1,300 Rem 209P Extra-Lite CB 0178-12 16 7,490
--- 3/4 1,250 Rem 209P Extra-Lite CB 0178-12 15 6,740

Check Alliant's Site http://www.alliantpowder.com/reloaders/index.aspx

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 Post subject: Re: 12 ga reloading 3/4 ounce data
PostPosted: Wed Jun 08, 2011 8:26 am 
Limited Edition

Joined: Sun Nov 12, 2006 5:11 pm
Posts: 494
Location: South Western CT USA
Copied from above:
Hodgon lists a few 3/4 oz loads as well with Clays in a Remington STS/Gun club too:
Lead Shot 12 3/4 oz. Clays Win. 209 Fed. 12SO 16.4 6400 PSI 1200
Lead Shot 12 3/4 oz. Clays Win. 209 Fed. 12SO 17.3 7000 PSI 1250
Lead Shot 12 3/4 oz. Clays Win. 209 Fed. 12SO 18.1 7600 PSI 1300

I shoot the 18.1 gr of Clays and only thing I change is to a WW12L (gray) wad for the 12 S0 wad. It gives me more consistant patterns out of my gun - Cronos at the muzzle (out of my Browning 525) at 1370FPS. I have been using this load here in CT (warn or cold) for over 7 years now with absoulty no problems. I shoot skeet, trap & sporting with is load by just changing the shot size accordinly (#9s to 7 1/2s). Also, remember that you need a good .055 inch deep crimp to make the powder burn completely and you DO NOT need any wad pressure when you seat the wad.

SD on all of the 3/4 oz loads that I havew tested (made with my above recipe) had been between 15 & 17 using my pro crony at about 75 degrees (CT summer late day temperatures).

Hope this helps.

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Last edited by MilfordMike on Thu Jun 09, 2011 9:19 am, edited 1 time in total.

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 Post subject: Re: 12 ga reloading 3/4 ounce data
PostPosted: Wed Jun 08, 2011 11:44 am 
Diamond Grade

Joined: Mon Aug 23, 2010 9:38 pm
Posts: 1273
Location: San Jose, CA
3/4 oz 12g is rather "specialized". You can use any 7/8 data, sub appropriate/similar wad and reduce the payload. The effect will be less pressure at slightly more velocity than listed for 7/8.


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 Post subject: Re: 12 ga reloading 3/4 ounce data
PostPosted: Wed Jun 08, 2011 1:45 pm 
Crown Grade
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Joined: Thu Oct 30, 2008 12:47 am
Posts: 5374
Location: Covington, WA USA
I don't shoot 3/4 ounce myself anymore, but I do still make them up for friends, and youths that shoot with us.

A coupla weeks ago when I spent an entire afternoon catching up on my chrono testing (when I posted the chrono results of the DRV-20 wads), I happened to have had a string of 12-gauge 3/4 oz loads that were in the waiting to be tested that got tested that day.

That data is:

Chronograph: ProCrono Digital
Location: Renton Fish and Game, Renton, Washington
Outside temperature: 58 degrees F
Date: 5/29/2011
Time: ~3:15PM
Gun: 30-inch Browning Citori XS Skeet, Carlson extended tube SKT/SKT chokes

S4') (*) 10 shots, 3/4 oz 1F STS green hull, 17.2 gn's e3. DR XXL Pink, W209
1336 H
1188 L
1287 Avg
148 ES
42 SD

Removing the 1188 L, it looks like this:
1336 H
1260 L
1298 Avg
76 ES
24 SD

* The ProChrono Digital only holds 9 strings. Since I had more than 9 strings to test, I had to record/save the first 9 strings, erase them, and start over, hence the 4' (4-prime).

I have nothing against 3/4-ounce loads in 12-bore per-se, as I've shot my fair share of them (in the only load configuration that I ever found suitable), but that phase of my shooting life is over. Impression overall looking back on it all now was lukewarm at best. I think it's a still a novelty load in 12 gauge (as others have said), with 12 gauge not being the best delivery system for 3/4 oz in my view. There are enough better performing 7/8's oz loads to make another 3/4 ounce endeavor not worthwhile for the reasons of saving money and/or recoil reasons. Just my view. Not regretting ever doing to 3/4 oz thing (endless testing & fiddling), but probably not something I'd be likely to embark on again, or recommend to others that I know. I'd be more inclined to recommend a 20-gauge tube for the 12-gauge gun if someone was still hell-bent on shooting 3/4 ounce from a 12-gauge.


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 Post subject: Re: 12 ga reloading 3/4 ounce data
PostPosted: Wed Jun 08, 2011 11:05 pm 
Field Grade
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Joined: Mon May 24, 2010 12:29 pm
Posts: 47
These are recipes from a Tom Roster article in Sporting Clays magazine. Image Image



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