On Feb 17th I ordered some 21g slugs from Nielson Specialty Ammo vie abay. I was very anxious to get them but they didn't ship until the 22nd and didn't show up until yesterday.
My .22 Synrod has a MM LW barrel and just by looking down it I'm estimating a 1:16 or 1:18 twist rate so I was hoping it would shoot them well. My Synrod is tuned to shoot JSB 18.1g at 860fps so I knew these 21g with their extra weight and more barrel contact area would be slower. Today I opened one garage door about 2/3, set up the shooting bench in one corner and trecked through the 20 degree weather and 6" of snow to put a target at 37 yards (the furthest I could conveniently get without going off-road in my boots). I shot a five shot group with the normal JSB tune settings and they were about 2.5" lower and about a 1" group strung horizontally. I then turned the striker in two turns and shot another group. No noticeable change in point of impact and again a 1" horizontally strung group. I tried two more striker turns and that didn't change anything either.
I was hoping for better accuracy so I could bird/squirrel hunt at long ranges. I wouldn't have any hesitation shooting a pigeon at 40 yards with these slugs knowing they hit 2.5" lower. I may have to get a heavier hammer spring and chrono them as what I read is slugs like a faster fps. I don't want to go with a heavier slug than 21g with this Synrod.
Any suggestions?
My .22 Synrod has a MM LW barrel and just by looking down it I'm estimating a 1:16 or 1:18 twist rate so I was hoping it would shoot them well. My Synrod is tuned to shoot JSB 18.1g at 860fps so I knew these 21g with their extra weight and more barrel contact area would be slower. Today I opened one garage door about 2/3, set up the shooting bench in one corner and trecked through the 20 degree weather and 6" of snow to put a target at 37 yards (the furthest I could conveniently get without going off-road in my boots). I shot a five shot group with the normal JSB tune settings and they were about 2.5" lower and about a 1" group strung horizontally. I then turned the striker in two turns and shot another group. No noticeable change in point of impact and again a 1" horizontally strung group. I tried two more striker turns and that didn't change anything either.
I was hoping for better accuracy so I could bird/squirrel hunt at long ranges. I wouldn't have any hesitation shooting a pigeon at 40 yards with these slugs knowing they hit 2.5" lower. I may have to get a heavier hammer spring and chrono them as what I read is slugs like a faster fps. I don't want to go with a heavier slug than 21g with this Synrod.
Any suggestions?
