Well, a little off topic - not exactly a CB load.
I read someones' instuctions about making shot loads for 44 Mag & I remember seeing an old friend years ago make shot loads for 45 ACP using the RCBS form dies, #12 shot, a .311 ball, & 410 shotshells. I decided I needed something with a little 'reach' for killing carpenter bees around the house. I did not want to blow holes in my gutters or do any other damage or even give the neighbors any reason to complain. To be easy to load, I thought I'd stick with using my S&W 625 Revolver (Model of 1989 4")
At first, I thought I'd get by with using a 45 acp case, drill out the primer hole to keep the primer from backing out, seat a styrofoam "wad" against the bottom of the inside of the case, fill the case with bird SEED, seat a styrofoam wad on top & go hunting.
My tests showed the bird seed would cut paper at 10 feet, but the pattern went wild. Seed was too light and too large in diameter - not enough of it. Then, I thought about the walnut hull media I use for tumbling brass cases. What I use, thanks to someone here for the tip, is Walnut Litter for bird cages. It's crushed walnut hulls, a little smaller diameter than I usually used, but works great for cleaning brass even though it isn't treated with a media polish coating. That worked much better, but still didn't give me the volume of hits I wanted on the target (It did work on some bees that got too close during testing though).
I kept looking at the 45 acp shells sitting in the cylinder and all the unused space between the top of the case and the end of the cylinder - looked like it was only 1/2 full (or empty for you pessimists).
Well, .45 acp is about the same as .30-06/.308/.243/.270 on the case head. Grabbed a couple old military .30-06 cases and after measuring the cylinder length again, cut them off at 1.610-1.650" with a tubing cutter. After flaring the mouths of the brass back out straight, I trimmed them to 1.600" (the length of my cylinder). Looking through my loading manuals, it looked like the .44 mag case OD was about the size of my chamber throats in the 625 cylinder, so I ran the '06 brass into the 44 mag sizer die just enough to get the OD of the brass at the case headspace step in the cylinder to drop in. It kind of looks like an oversize 44-40 without a rim.
Next step was to drill out the primer hole to stop the primer set-back.
The styrofoam wads I used were from the packing plate the you buy steaks on from the grocery store. The styrofoam that the t-bone steaks & ny strips comes on works best I cut the wads using a 45-70 case that was sharpened on the edge and a couple teeth filed into it. Turning it backwards from my intended cutting style works much better.
Packing a wad into the bottom of the case , a full case of walnut 'litter' and a wad on top, worked ok, and was very quiet, but wouldn't even break surface of the paper at 15 feet. I tried 1.0 gr of W231, and it got it back into the killing power range.
I've dusted about 4 of the little jokers so far, and it won't hurt the gutters or any of the woodwork.
Can't tell of any damage to the rifling in the barrel, but I'd be sure to use the UNTREATED walnut hulls/media. Also, I haven't tried any more powder than 1.0gr of W231 because of two things - the drilled out primer holes & the roughly formed step to clear the chamber edges in the cylinders. I guess if you had an old Colt 1917, you'd be home free - they were straight cut cylinders with no headspace shoulder in the cylinder - Smiths did - you can use 45 acp without the star clip with a Smith.
Hope that helps someone - have fun - happy hunting - keep out the 'wood-cutting-bees' from you house.