Just go to the Alliant website's load data for 20 gauge and start loading. I don't think CBE has a wad for 1 ounce 20 gauge loads. Claybuster only show 3/4 & 7/8 wad loads. Or load with traditional cardboard and felt wad column materials if no wads specifically can be had for the loads you want.

Now, on the flip side of web info. It's said that the 1078 was is generally for 1 oz to 1-1/4. So if you play around with the wad I think your powder will be key to your success. Likely blue dot will be too slow. Might be easier to find 3 inch 20 gauge data for one ounce if your using 2-1/2" currently.

Last edited by nitroexpress; 07/27/21 09:06 AM.