The Shooting SHED RCBS Chargemaster Adapter Tube Thingy.
THE ORIGINAL VERSION AND OFTEN COPIED VERSION
Have you ever tried throwing a larger kernel powder with the Chargemaster and found it over throws from time to time? One of our preferred powders is H4831SC and Christel was for ever muttering about the CM occasionally over throwing. I experimented with all sorts of things to give a quick fix however they never seemed to do the job so I decided to build my own if only to keep the Viking happy and here it is.
Manufactured from polished 6082T6 this small adapter pushes into the end of the CM feed tube with a twisting motion, the inner edge is perfectly blended to pick up the kernels of powder as they are fed and the exit end of the tube has a carefully sized radius to allow just the right number of kernels to fall.
Now I have to hold my hands up at this stage and say I just build the things as throwing powder drives me to distraction however the Viking assures me this little adapter has reduced powder over throws by 99% or better and she is certainly getting more cases filled so it must be working!
We still have not thought of a proper name for it so for the time being it will have to be known as the RCBS Chargemaster adapter tube thingy.
Please note there might be slight marks on the nose where we tested it.
We are finding about 1 in 50 of our CM Adapters are either too big or too small, this is due to the manufacturing tolerances of the RCBS Chargemaster itself as opposed to the Adapter we make and on the odd frustrating occasion that this does happen you will need to improvise very slightly.
Customers tend to either use a tiny bit of Blutack or tinfoil or even a drop of superglue to hold the adapter in place. If the adapter is slightly oversize the lightest of sanding with something like 600 grade wet and dry is usually enough however do take care as it is very easy to take too much material off which means resorting to the measures used for a loose fit.
We know our part is accurate as the push in diameter is machined by David to minus 0.0000" plus 0.0003" and all are tested in our gauge. If you are not happy with the Blutack solution and can accurately measure your Chargemaster then David will be happy to make you a new one.
Please note that the postage cost for Thingies is £3, a postage refund will be issued if only a Thingy is purchased.