Hi,
Just starting to reload for a Husqvarna Mod 4 Rolling Block chambered for the 40 mm 20 ga brass case. The rifle appeared to be in mint condition when I got hold of it. Heavy 32" oct barrel, shotgun butt and, twin extractors, bore .622", groove .662, twist approx 1 in 72", 3 leaf sight marked 60, 120 & 180 m.

After trimming some CBC brass 20 ga cases to match the chamber a 16 ga ball (.662") was a tight slip fit so I loaded some up with 2 3/4 drams FFg (approx 75 gr)and a 1/4" greased felt wad. These grouped nicely but were approx 8" high at 50 m. Made up a conical slug by boring out a .662 round ball mould with a single shallow lube groove (approx 520 gr with 40-1 alloy). Using the same load these also shot well but were about 10" high at 50 m. At 100 m both projectiles are still hitting centre but about 6-8" high using the 60 m leaf and a 6 o'clock hold. The 120 m leaf puts them way over the target

So I'm after any suggestions on what to try next to get these projectiles hitting lower. Can I increase the powder charge - not sure about the safe limits with these Husky RB actions, or should I reduce the height of the 60 m sight. The foresight is already very low.

This bore gun shows real potential and is very pleasant to shoot.

Spud