Daryl,
I totally agree with your comments about forster type slugs and poor accuracy. I have always imagined that an experienced cast bullet loader could do much to improve these though.

Years ago (early 1990's) when super dangerous pump action shotguns were legal in Australia, I had a Win 1300 and as soon as I heard rumours that Winchester were offering special order rifled barrels I ordered one for it. It took over 14 months for me to get it but when coupled to a Weaver V4.5 scope I was very happy. This was until I started playing with it and could only get 5 inch groups at 50m which was not much better than I was getting with a smooth bore. This was with various factory loaded Forster slugs (namely Win, remington and a few others), so yes I know the limitations of the factory forsters, I just imagined that RB's would be worse. Brenneke's were much better out to 75m, but nothing like the saboted slugs that were available in the US but not Oz.

I then discovered the S&B "slugs" that were a nylon encased brass projectile. These gave me 3-4" groups at 100m and I was once again very happy. This was my close in pig gun until it was made illegal in 1996.

As an aside,the state that I was living in at the time, Victoria, also considered solid slugs as special ammo that I had to apply in writting to get permission for me to shoot them.

I look forward to some range reports on the RB loads.

George