Hi guys, I'm new to the site and have a few questions regarding the loading of Federal top gun hulls that I'm hoping you can shed some light on
I've been reloading Federal top gun hulls with the paper basewad and have had good results with 1oz #9 shot with 12S0 wads over 18 grs of titewad powder and the same shot and wad combo using 17 grs of 700x.
I tried those same recipes in the top gun hills with plastic basewads and found I get a really deep crimp exposing the shot just like a slug round looks. After cutting open both hulls I see that the reason for the difference in stack height is because the plastic base wads sit much lower in the hull than the paper base wads. Simple reason now I need a simple remedy and not "don't use those hulls" lol.
I can't seem to find a recipe regarding these particular shells. In my 5th Edition Lyman recipe book it shows a Remington Plastic with 1/4" plastic basewad that looks to be a straight wall hull like the Federals so I was thinking of trying out one of the loadings to see if it would work.
I have heard of using a single Cheerio in the bottom of the hull to take up the space and then load out as normal but I don't want to get off the tried and true just yet. Rather be safe than sorry.
Next question is why on some recipes does the book use tapered wads in straight walled hulls and straight walled wads in tapered hulls? Are these typo errors or are these legitimate loadings? And if I chose to change the combination to match wad and hull shape would that change the pressure created when the shell is fired?
All responses appreciated, even sarcastic ones.