2 7/8" 10ga Reloading Data

[J.B. Books]

Originally Posted by Cal Lego

Hi J.B. I want to say thanks for posting the spread sheet. i did notice what appears to be an error in the amount of Herco used. I think the numbers must have about 10 grains added to the correct amount. I was using Sherman Bell's loads of 30 grains Herco and 1-1/4 oz. I might see going to 33 or maybe even 35 grains but 45 grains-29 grains Unique sounds right and Unique in a 10 gauge is right around the Herco range.

You are welcome, I just double checked the spreadsheet against my cited sources of that loading data, the 1968 and 1970 Hercules Reloading guides. The amount of Herco stated is correct as published in those guides. I believe those powders have changed since that was published and I put a note in the sidebar in red advising that I would reduce these charges by 15 to 20%. Perhaps advising a reduction by 25% would be more prudent.

[Cal Lego]

Originally Posted by Pete Lester

You are welcome, I just double checked the spreadsheet against my cited sources of that loading data, the 1968 and 1970 Hercules Reloading guides. The amount of Herco stated is correct as published in those guides. I believe those powders have changed since that was published and I put a note in the sidebar in red advising that I would reduce these charges by 15 to 20%. Perhaps advising a reduction by 25% would be more prudent.

Those sound like some pretty hot loads! I remember loading 31 grains of Herco in a 12 gauge M12 when I was 16 y.o. and that was what I had read somewhere. 1-1/2oz. shot for a 2-3/4" baby magnum. Those were some mean loads! I notice others are using 30 grains with Unique and PB, 2 of my favorites.

Those may be perfectly safe loads for all I know though. I'm with you on the reduction in charge to start with though.

Once again, thanks for getting all this stuff together. I'm going to be using at least one of these in 1-5/8 oz. this spring for my turkey hunt.