just so everyone is clear and on the same page. Yes constriction matters, but thats not what tells the whole story. Internal geometry also plays a big part. Meaning not all 555 chokes shoot the same tightness, not all 575 chokes are as "open" as it sounds.
A great example of that years ago was MAD made a 640 choke for 12 gauges, and people were like WOW THATS WAY TO TIGHT, but due to the geometry of it the choke shot more like a 660 constriction. Granted with TSS, standardized bore diameter in 20s and smaller shot consistency is much easier to achieve vs lead and bigger heavy shot of old.
My point really is YES constriction matters but not all 575 chokes are the same or shoot the same. My goal with all my sub gauge weapons is have a NO DOUBT 40-45yd pattern but not with a super tight core. I found the 562 range to be pretty perfect for that using Indian Creek and Sumtoy chokes.
Weirdly enough in my old Under/Over rig the 575 carlsons shot the exact same pattern as a 562 IC in it. These days I dont want to spend the money on multiple chokes and waste expensive ammo to try different ones, hence I usually just start with an Indian Creek and thus far it has been good in every gun I have ever owned.
A great example of that years ago was MAD made a 640 choke for 12 gauges, and people were like WOW THATS WAY TO TIGHT, but due to the geometry of it the choke shot more like a 660 constriction. Granted with TSS, standardized bore diameter in 20s and smaller shot consistency is much easier to achieve vs lead and bigger heavy shot of old.
My point really is YES constriction matters but not all 575 chokes are the same or shoot the same. My goal with all my sub gauge weapons is have a NO DOUBT 40-45yd pattern but not with a super tight core. I found the 562 range to be pretty perfect for that using Indian Creek and Sumtoy chokes.
Weirdly enough in my old Under/Over rig the 575 carlsons shot the exact same pattern as a 562 IC in it. These days I dont want to spend the money on multiple chokes and waste expensive ammo to try different ones, hence I usually just start with an Indian Creek and thus far it has been good in every gun I have ever owned.