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<  16ga. Ammunition & Reloading  ~  3/4 oz DR 16 Cheddite crimp problem solved
Boats
PostPosted: Thu Aug 25, 2016 5:43 am  Reply with quote
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My go to light 16 G target load, straight out of the spread sheets, is 14.5 Green Dot DR 16 Wad Herters Cheddite hull. 3/4 oz #8. Works great except I had to add a Cheerio to get it to crimp properly.

Other day when setting up weighed my shot charge. P-W # 3 Bushing was dropping 220 grains or 11/16 oz. Hand dipped and weighed some full 3/4 oz charges = 240 grains. Filled just a bit higher, level with the top of the shot cup, and crimped very well without the Cheerio. Read on the forum 1/8 oz in a 16 g hull = 1/8 inch so 1/16 oz must fill 1/16 inch or just about the same as the Cheerio fills.

Short term took a # 4 PW bushing and lined it with blue painters tape until it dropped true at 3/4 oz. Just finished a run of 200 shells with no crimp troubles at all. Perfect. Longer term will chuck the # 3 in my lathe and open it up so it drops a true 3/4 oz.

Pays to check weigh, how the bushing is marked is not always what you get.

Boats
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eng-pointer
PostPosted: Thu Aug 25, 2016 9:00 am  Reply with quote
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I cant find this load in the spreadsheets. Do you have the velocity and pressure info handy. I think I will try to load this in a 2 1/2" shell and send it in for testing.

James

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Boats
PostPosted: Thu Aug 25, 2016 10:12 am  Reply with quote
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I do but not in front of me right now, will post it later today

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Boats
PostPosted: Thu Aug 25, 2016 10:49 am  Reply with quote
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To be clear data is for 2 1/2 I am loading in 2 3/4 inch hulls and using DRs not the recommended BP SG 16 tried 2 1/2 with the DR and had the same result as you did . Shot too high .

From the sheet no changes

Cheddite 2 1/2, 3/4 oz Green Dot 14.5 Grs Federal 209A BP SG 16 1098 FPS 6,233 lbs. Source = fn 16 ga

I have some SG 16s and they will allow 3/4 in a 2 1/2 , ought to load 2 1/2 for one of my SXS but I don't

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16gaDavis
PostPosted: Thu Aug 25, 2016 1:38 pm  Reply with quote



Joined: 24 Jun 2013
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Location: canandaigua - western n.y. (formerly deerhunter)

boats , not exactly clear on what you are saying about your shot weights ... the EASY math on shot weights is 110grns = 1/4oz , 220grns = 1/2 oz(410 std 21/2'' load) , 330grns = 3/4 , 440 = 1oz , 550grns = 11/4 etc ... just to be helpful .

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Boats
PostPosted: Thu Aug 25, 2016 4:28 pm  Reply with quote
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Did I mix numbers ? Looks like I did thanks for catching it. Chart I use, on the side of my Lyman scale 1 oz equals 437 Grains. But that's splitting hairs compared to your 110 grains 1/4 oz. Ballistic Products chart says the same 437 = 1 oz My 3/4 oz drop after adjusting the shot bushing is now 328 grains it was throwing less than 300 grains

28 grains more shot made the difference crimp no Cheerio needed, make sense ?

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16gaDavis
PostPosted: Fri Aug 26, 2016 10:06 am  Reply with quote



Joined: 24 Jun 2013
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Location: canandaigua - western n.y. (formerly deerhunter)

sometimes just a little makes a lot of difference . I just don't split the hairs on 2.5 grns of shot - much easier to remember 330 etc ... My 28ga bar for 3/4 oz throws 300 grns ! I have a scoop that throws 9/16 , and that is now my 28ga load . 12grns 20/28 , Win style wad and that weight of shot . Works in a Fed 25/8 ,Win AA and Rem STS - tight on the pre-crimp and slow on the final - go figure it fits ! If I put wad pressure in , they'd all dish .

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16gaugeguy
PostPosted: Fri Aug 26, 2016 12:36 pm  Reply with quote
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Boats, you might want to check weigh your powder drops. 14.5 grains of Green Dot for your load is probably on the extremely light side. Pressures are probably well below 8K PSI which can lead to problems like squib loads and poor cold weather performance.

My pet 3/4 ounce load in an RGL hull uses 16 grains (thrown charges check weighed at 15.6 grains) of GD. My load produces around or just under 9K PSI (which is considered on the mild side), and 1200 FPS. It is a very consistent, dependable performer and produces no squib loads regardless of temperatures. it also smashes skeet targets very well.

The RGL hull has a smaller volume and produces higher pressures than a Cheddite type hull if all else is equal. You might find that 17 grains of GD is a better powder charge for your particular load. It should produce pressures at or under 9K and velocities between 1150 and 1200 FPS. Hope My suggestion helps. Good luck.
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Boats
PostPosted: Fri Aug 26, 2016 12:54 pm  Reply with quote
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It's the lightest load that is practical. I have tweaked my powder drops just a bit to come up with 14.5 . Mec bushing in a P-W press using an adaptor, & check,weighed carefully.

I have a 7/8 oz 15.5 g Green Dot load I use in a Parker Trojan, better all around load for a more modern gun that's used for birds sometimes. . However the two 16 G SxS Hammer Guns I am running the 14.5 3/4 oz in need low recoil. One a Parker with a repaired stock, other a FN that weighs under 6 Lbs and is lightly stocked. We don't get all that cold here and would defiantly check the bore if I Had a squib. So far never had less than normal recoil, it's 1090 FPS, ideal to my mind is 1150. if I set the crono close to the muzzle it gets very near 1150.

It's the absolute minimum, just what I am looking for.

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16gaugeguy
PostPosted: Fri Aug 26, 2016 1:30 pm  Reply with quote
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Sounds like you know what you are doing. Good luck.
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Boats
PostPosted: Fri Aug 26, 2016 2:03 pm  Reply with quote
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It's very gun weight dependent. I have Wards Western Field (Stevens 520) 16 & a Remington 31 16 both do fine with heavier loads. Although I mostly use Factory Herter's 1 oz in the pumps, to make empty's for the SxS Guns.

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