Hoser-


Something else for you to consider...

When you get set up with your new double rifle, you will at some time (hopefully sooner than later) find out what ammunition it likes best.
Once that moment passes, your job is to get stocked up on that ammunition - or to run that ammunition through a chronograph and get your loading gear together, then to duplicate it's performance through your rifle.
Load development for that rifle is then done for good.
That's the ammunition you'll run through that rifle.


Also.
The 20ga 'rifled shotgun' that's offered by Galazan, The RBL Professional, might be a really good choice for you.

It's not really a shotgun, but it is legal for shotgun-only deer hunting seasons in shotgun-only states.
It's a fully-rifled 20ga double rifle, set up specifically for modern sabot slug ammunition - and there are very effective copper-solid sabot-slug loads for the 20ga guns.
This is a new model for them, and from what I've seen 'around and about', those who have gotten theirs are quite happy with what they got, and the rifles are accurate.
The regulation of the barrels is also adjustable for different ammunition loads too.
Think on that!



Cheers
Tinker