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< 16ga. Ammunition & Reloading ~ SG16 vs SG16S wads |
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Posted:
Thu Jan 25, 2018 8:21 pm
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Joined: 02 Oct 2014
Posts: 66
Location: Iowa
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What is the difference between SG16 and SG16S wads?
Its not obvious, that's for sure. |
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Posted:
Thu Jan 25, 2018 8:41 pm
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Member
Joined: 02 Feb 2007
Posts: 372
Location: mpls mn
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its in the base wad. One has a bunch of little fingers making it take up space.
the other has ridges on the inside edge adding more volume |
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Posted:
Thu Jan 25, 2018 8:44 pm
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Joined: 02 Oct 2014
Posts: 66
Location: Iowa
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the SG16s have little fingers. Would that increase or decrease pressure, all else being equal? What other effect would it have? |
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Posted:
Thu Jan 25, 2018 8:52 pm
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Member
Joined: 02 Feb 2007
Posts: 372
Location: mpls mn
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Not sure but I think it only effects the volume
the fingers take up more space
call bpi and ask
I interchange them according to shot size,larger shot take up more volume for a given weight |
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Posted:
Thu Jan 25, 2018 8:54 pm
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Joined: 02 Oct 2014
Posts: 66
Location: Iowa
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But those fingers are in the base of the wad. That wouldn't affect lead volume -just powder space. I'm not following you. |
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Posted:
Fri Jan 26, 2018 2:53 am
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Member
Joined: 06 Oct 2007
Posts: 2357
Location: West MI
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Posted:
Fri Jan 26, 2018 10:15 am
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Member
Joined: 08 Aug 2011
Posts: 1946
Location: Central CT
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It actually doesn't change the chamber pressure much if at all. What does get affected is the wad column height.
Not a lot but enough to sometimes make the difference between a flat crimp and a concave or convex crimp depending on the load. |
_________________ Mark |
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Posted:
Sat Jan 27, 2018 8:53 am
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Member
Joined: 21 Feb 2005
Posts: 367
Location: Anchorage, AK
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I have used SG 16S in 2-1/2" shells, sometimes with 1 ounce of shot. The shorter wad column allows a better crimp. |
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Posted:
Sat Jan 27, 2018 5:08 pm
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Joined: 24 Jul 2016
Posts: 548
Location: Ohio
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It's all about stack height. The SG16S sits lower hence more room for shot. All those little fingers hold the SG16 higher making it a ideal 7/8 oz wad. I use it in almost all my target loads. |
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Posted:
Sat Jan 27, 2018 5:21 pm
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Joined: 02 Oct 2014
Posts: 66
Location: Iowa
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The SG16 wad in Iowa must be shorter then. In my 2.5" shells it is too short with 1 oz loads to be honest. I upped to 1.14 oz loads and it's just about perfect. |
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Posted:
Sat Jan 27, 2018 7:31 pm
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Joined: 24 Jul 2016
Posts: 548
Location: Ohio
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That's wonderful,You should notify BPI of your findings. I'm sure they would be interested. Perhaps they'll do a pressure test to see what that extra 1/4 oz of shot does in a 1oz recipe. |
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Posted:
Sat Jan 27, 2018 7:34 pm
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Joined: 02 Oct 2014
Posts: 66
Location: Iowa
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It's a 1 1/8 oz recipe and 1.14 is 0.015 oz in excess of 1 1/8. |
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Posted:
Sun Jan 28, 2018 3:57 am
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Member
Joined: 09 Jan 2013
Posts: 2177
Location: Florida
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brent wrote: |
The SG16 wad in Iowa must be shorter then. In my 2.5" shells it is too short with 1 oz loads to be honest. I upped to 1.14 oz loads and it's just about perfect.
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could you share the specs of this load . |
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Posted:
Sun Jan 28, 2018 6:32 am
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Member
Joined: 08 Aug 2011
Posts: 1946
Location: Central CT
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Brent,
Something is wrong, I load 1 oz. in a 2 3/4” hulls with that wad with no trouble. The loads for doing this have been around and been used for years. At least 25 years. |
_________________ Mark |
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Posted:
Sun Jan 28, 2018 7:07 am
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Joined: 02 Oct 2014
Posts: 66
Location: Iowa
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Dogchaser37 wrote: |
Brent,
Something is wrong, I load 1 oz. in a 2 3/4” hulls with that wad with no trouble. The loads for doing this have been around and been used for years. At least 25 years.
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I don't know. I've only done my 2.5" cases with it. It is the only 16 I have. Normally, I have loaded with black powder. |
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