This is probably heresy here but since I bought my Husqvarna to be a shooter I am having a good double shop make the following changes.
Open up chokes to LM (skeet II) and IM Per my gauge the original chokes were very tight
Open 2 3/4 chambers to 3
My thought on this is to load ITX nontoxic in 1 1/8 and 1 1/4 shot weights in a 3 hull this loads develops 9000 PSI with a fold crimp. If I go with a roll crimp the chamber pressure will go down even more. Hard to say how much a roll crimp will reduce chamber pressures but testing by BPI appears to suggest a 500 PSI reduction.
Lead loads will be 1 1/4 oz.load with no shot cup using a BPI light brush load. this gives me true choke performance and 8500 PSI pressures with fold crimps. I have friends that are doing similar with their 10 gauge guns loading 1 3/8 oz. These square loads really pattern well.
Once again this is an early 1950 production gun which is in excellent condition.
Once I get photos in the bucket I will post a pic
Your thoughts are appreciated