ShotGunWorld Shotguns

It is currently Fri Oct 23, 2020 3:12 am

All times are UTC - 6 hours [ DST ]


Image



Post new topic Reply to topic  [ 16 posts ] 
Author Message
 Post subject: MEC powder bushings
PostPosted: Sun Sep 20, 2020 8:29 pm 
Utility Grade

Joined: Mon Sep 14, 2020 8:19 pm
Posts: 10
Extremely new to this. How much variation should I expect to see in my weighed powder drops when compared to the chart provided by MEC? Mine seem light consistently. I've gone up 2 sizes to get the drops I need.




Top
 Profile  
 
 Post subject: Re: Med powder bushings
PostPosted: Sun Sep 20, 2020 8:41 pm 
Limited Edition

Joined: Wed Aug 18, 2010 1:43 am
Posts: 411
Are the drops consistent ?
Single stage loading? Or progressive ?
Common to be a shade on the light side.


Top
 Profile  
 
 Post subject: Re: Med powder bushings
PostPosted: Sun Sep 20, 2020 10:29 pm 
Limited Edition
User avatar

Joined: Sat Aug 01, 2020 11:50 pm
Posts: 353
Location: The wilds of rural central California
I use the MEC chart and Lyman's #5 as a starting point for powder drop. Use what you find on the scale regardless of bushing #. Folks have been known to take a Dremel to a bushing to get exactly what they want although as far as powder is concerned, close is acceptable.
This ain't metallic.

tp

_________________
RM, NRA/USCCA RSO, NSSF, and a bunch of other acronyms.
12/30" Browning Citori CX White
12/26" Franchi Affinity 3
12/26" ATI Cavalry (hey, it shoots...usually)


Top
 Profile  
 
 Post subject: Re: Med powder bushings
PostPosted: Sun Sep 20, 2020 11:16 pm 
Limited Edition

Joined: Tue May 03, 2011 1:25 pm
Posts: 341
Location: New Mexico
Quote:
Mine seem light consistently. I've gone up 2 sizes to get the drops I need.


Sounds about like normal. You MUST check weights dropped as you get your loader filled with hulls and loading. The vibrations coming from operating the loader will pack powder more tightly and your weights may come up a little. But it's common to need at least next bushing bigger for powder.

Good luck, garrisonjoe


Top
 Profile  
 
 Post subject: Re: Med powder bushings
PostPosted: Mon Sep 21, 2020 4:58 am 
Diamond Grade
User avatar

Joined: Sun Nov 26, 2006 9:04 pm
Posts: 1388
Location: Upstate NY
I usually start with a bushing one size larger than the chart recommends then weigh several charges during actual press operation. I frequently have to move up one more size.

A lot of factors can affect your powder drop weight... two guys using the same bushing in the same model reloader can get different drops. Weigh your charges regularly.

_________________
"The freaks can't be normally formalized, nor can we be formally normalized. What we want is complete weirdification."
KD2TTM
Member: NRA, New York Rifle and Pistol Association


Top
 Profile  
 
 Post subject: Re: Med powder bushings
PostPosted: Mon Sep 21, 2020 5:34 am 
Crown Grade

Joined: Thu Aug 31, 2006 10:06 am
Posts: 3684
Location: UK, England, Britain
Agree with all said.
My bushings for one powder progressive and single stage might be different. Depends on individual powder, machine, usage.

Your accurate scale is your link to your published data.


Top
 Profile  
 
 Post subject: Re: Med powder bushings
PostPosted: Mon Sep 21, 2020 6:14 am 
Limited Edition

Joined: Fri Aug 16, 2019 4:29 am
Posts: 412
Location: Port St Lucie FL
My experience with MEC bushings is exactly like yours, I suspect it is a built in safety factor due to our legal system. Many people who use the bushings will fail to weigh powder charges even though MEC and every other manufacturer says doing so is critical.
Once I determine which bushing throws the correct weight of powder I note the number in my loading log to give me a starting point the next time I use that recipe, and good practice dictates weighing charges at least every time you open a new container of powder.


Top
 Profile  
 
 Post subject: Re: MEC powder bushings
PostPosted: Mon Sep 21, 2020 9:09 am 
Crown Grade

Joined: Mon Mar 28, 2005 11:25 pm
Posts: 2259
Location: Attica, Mi
I believe the charts are for single stage reloaders seeing how the bushing sits under the bottle for 4 different operations. This means the powder bottle is shaking and there for making the powder settle in the bushing giving a heavier load than a progressive press where the bushing is only momentarily under the powder bottle. So if someone is only going to publish one chart, they'll do it for the press that gives the higher powder drop. I have seen where two different drops are given, one for SS presses, and one for progressive. With a progressive it's real easy to be all over the place depending on how long you pause with the handle down. keeping the bushing under the powder bottle. Years back I was reloading with a Mec 650 and was seeing how fast I could go. I got pretty fast BUT shooting skeet one day I had lots of bloopers. You could see the shot go out the barrel for 20 feet or so. At first I blamed my grand daughter, who helped me at times. But visiting a friend who was running his 9000H I noticed how he kept the bar over for a couple of seconds. My fault, not the grand daughters. I slowed down a bit and no more bloopers.

_________________
Venue shotgun chairman of the LCSC and the LPSXSA


Top
 Profile  
 
 Post subject: Re: MEC powder bushings
PostPosted: Mon Sep 21, 2020 5:29 pm 
Limited Edition

Joined: Wed Oct 28, 2015 8:45 am
Posts: 376
I believe that all of the Mec bushings weigh lite for liability reasons thankfully that is what a good scale is for.You can figure on at least 1to2 bushings over what is called for.


Top
 Profile  
 
 Post subject: Re: MEC powder bushings
PostPosted: Tue Sep 22, 2020 2:19 am 
Tournament Grade

Joined: Sat Mar 09, 2019 10:14 pm
Posts: 236
Location: Near, but not in, Portland, OR
Here are some of MY results using Red Dot and MY machine. Please do your own testing before you load ammo. DO NOT load based off of the below information.

Image

_________________
My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives


Top
 Profile  
 
 Post subject: Re: MEC powder bushings
PostPosted: Tue Sep 22, 2020 12:00 pm 
Tournament Grade

Joined: Fri Nov 09, 2018 8:41 pm
Posts: 221
All my loaders are MEC. As a routine, I always go up two bushings from the chart. Usually works. But always verify any drops with a scale.


Top
 Profile  
 
 Post subject: Re: MEC powder bushings
PostPosted: Tue Sep 22, 2020 1:58 pm 
Presentation Grade

Joined: Wed Mar 22, 2006 11:23 am
Posts: 904
Location: Issaquah, WA
All of the above is good info. Over the years I have collected quite a few bushings and have several duplicates. When I start with a different powder I will start with the recommended bushing and weigh the drops and change bushings (usually up) until I find one that drops a little more than my target. Then I use strips of aluminum tape (used in HVAC ducting) to reduce the bushing to a size that drops what I want. Once I have that, I stick the adjusted bushing in a zip top plastic bag with a note about the drop and tape it to the side of the powder jug. That way there is no question of what bushing to use when I come back to that powder/load. Some here will say that is way too fiddly but what can I say - I'm an engineer by training. :wink:


Top
 Profile  
 
 Post subject: Re: MEC powder bushings
PostPosted: Tue Sep 22, 2020 3:04 pm 
Tournament Grade

Joined: Tue Jul 14, 2020 4:02 pm
Posts: 145
Worth finding and reading -

Real-world reloading and its implications


by Neil Winston


Top
 Profile  
 
 Post subject: Re: MEC powder bushings
PostPosted: Tue Sep 22, 2020 5:35 pm 
Diamond Grade
User avatar

Joined: Sun Nov 26, 2006 9:04 pm
Posts: 1388
Location: Upstate NY
Having adjustable powder and shot cavities solves all the issues...

In two of my three single-stage MECs I have a Universal Charge Bar. They discontinued the darn things before I picked up another single-stage version and one for my progressive.

Used ones are selling for well North of $100 these days!

_________________
"The freaks can't be normally formalized, nor can we be formally normalized. What we want is complete weirdification."
KD2TTM
Member: NRA, New York Rifle and Pistol Association


Top
 Profile  
 
 Post subject: Re: MEC powder bushings
PostPosted: Wed Sep 23, 2020 2:54 am 
Tournament Grade

Joined: Tue Jul 14, 2020 4:02 pm
Posts: 145
J.Fred_Muggs wrote:
Worth finding and reading -

Real-world reloading and its implications


by Neil Winston


^^^^To greatly simplify your bushing use^^^^


Top
 Profile  
 
 Post subject: Re: MEC powder bushings
PostPosted: Wed Sep 23, 2020 5:28 pm 
Utility Grade

Joined: Mon Sep 14, 2020 8:19 pm
Posts: 10
mark-60 wrote:
Here are some of MY results using Red Dot and MY machine. Please do your own testing before you load ammo. DO NOT load based off of the below information.

Image


This is amazing work! My inner scientist is intrigued! Thank you so much! I fully understand this is an observation specific to you situation. Cool nonetheless!




Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 16 posts ] 

All times are UTC - 6 hours [ DST ]


Who is online

Registered users: Bing [Bot], DEG, Google [Bot], Google Adsense [Bot], LitzerSki, Majestic-12 [Bot], NailNinja, Road Man, toptechX6, Waldyo


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group    - DMCA Notice