Mec reloader help

srpiasta

Member
EE Expired
Rating - 0%
0   0   0
So I was using my Mec Junior MK5 for the first time and I thought I put the right bushing in (Middle one) for 17.5 grain measure I loaded 5 shells to check weight they all came up to only 14.6 so I put the large bushing in and now am only measuring 17.6 I thought it would be alot higher Am I doing something wrong or is this right, I am using red dot powder win AA`s HS, 2.75 shells, 7.5 shot 1 and an eighth
 
You will find that the bushings may throw either light or heavy depending on the powder used.and will also vary with different lots of the same powder.thats why it is so important to check the charge with a good scale over 10 or 12 shells in the loading cycle.one of the best add ons you can buy for your Mec is a Multiscale charge bar. http://multiscalecharge.com/
 
So I was using my Mec Junior MK5 for the first time and I thought I put the right bushing in (Middle one) for 17.5 grain measure I loaded 5 shells to check weight they all came up to only 14.6 so I put the large bushing in and now am only measuring 17.6 I thought it would be alot higher Am I doing something wrong or is this right, I am using red dot powder win AA`s HS, 2.75 shells, 7.5 shot 1 and an eighth


need numbers off bushings to know what is going on
check out http://www.mecreloaders.com/PowderBushingBar/Bushing.asp

what i think is happening is that the powder needs to settle a bit

what i have done with no shot in the shot bottle
is when you flip (or add powder) i tap on the plastic bottle several times (or work the up/down handle several times just letting it slam up)
throw a powder charge and toss it in the top of the powder bottle
then throw a 2nd one and weigh it (and make a change to the bushing if required ant to be sure several more
Note bushing will not exactly match what the bushing table says
you want to be close
--under a hair is better than over a lot --unless you check your book(data)
and there are several dram equ/ velocity loads for your componets

powder charge will vary from lot to lot
and will vary if you have old Hercules power or the new Alliant powder

What # bushing are you using ? for your light target load
 
I just went and looked I think I put the small one in and then the large one missed the middle one so gonna try again in the am. The bushing numbers are 29,30 and 32 I am using red dot powder and I will tap on the bottle to help it settle.
 
I don't like the bushings, I use a universal charge bar. Also as mentioned above, the powder and lead charges is proportional to how full and heavy the bottles are since its a gravity charge. My bottles kept at about third to half full is where it seems most consistent in charges. I don't let them get empty and I don't fill them all the way. The more course is the powder as well as the lead shot, the more inconsistent are the charges.

The MECs seem finicky but they work ok once you get these little things sorted out. I only load for 20g and .410.
 
Back
Top Bottom