Robert: That's where I have the notes but it seems there is more than one version of the load data that was distributed and that some got a copy without the notes. I don't remember where I got my spreadsheet that includes the notes in a separate worksheet.

Where to find them.

http://www.ballisticproducts.com/X10...tinfo/072X10X/

Thanks Pete. Things are starting to get more clear what these abbreviations and acronyms are.

According to the "notes x10x are stated as over powder card from Ballistics Products. I thought it simply was any nitro card which also goes over powder. A bio-gradable gas seal or spacer wad.

Secondly, while on the subject. If you look at the wad combo for load #90. What does x10x 2 1/4" MR mean?

2 1/4" of what??

i believe it means the mylar plastic wrap ..to be cut from sheet of plastic called mylar...its purpose to help keep a uniform pattern and protect the barrel.... charlie

Charlie,

You are correct except that mylar wrappers are available pre-cut for 10 and 12 gauge shells. They are available in thicknesses of .005" and .010". Their purpose is to of course increase the thickness of compressable material, such as the wad petal, between the hard shot and the softer barrel. Mylar also reduces friction which should in turn decrease pressure.

Frank,

The x10X is a gas seal that in some loads is combined with a mylar wrap to replace what would in other loads be the wad.

Load #90 calls for (1) [thanks to Pete's correction below] x10x gas seal, (2) 1/4" filler (16 gauge wads or portions thereof) and MR (mylar wrap).

Mark

I read it differently, (1) x10x and (2) 1/4" filler plus MR (it would seem 1 1/2" filler wad would work just as well). I don't see the point of using more than one gas check. Load 78 would require 3 gas check/seals???

Pete,

You are correct. I never looked at any of the 3 1/4" filler loads.

I shall correct my post so that someone doesn't read it and follow my erroeous guidance.

Mark

It has been my experience that SR4756 is a powder that will break your heart when used in the 2 7/8" 10ga. For me it produced far too many squib/blooper loads and they always seem to come when shooting at a bird. I have had much better results with SR7625 but as yet neither Scott K. or myself have found a totally 100% squib/blooper free powder for a hunting load. SR4756 is the worst powder to use when the shooting counts IMO.

Any air, or looseness in the powder will squib/blooper every time with 4756 in a ten gauge hand load. Have had the broken heart.
David

Thanks for the info on the bloopers. That is the last thing I want as I am loading for late season deer and then turkeys in April. Maybe I'll just back down to a powder I know to be 100% reliable with the 1 1/4 oz. loads. But it would be nice to take advantage of the 10 for loads heavier than what I can shoot in a 12.