What?!? Slugs give me LESS muzzle energy than pellets?!
Please help me to understand what's going wrong on my first-ever venture into slug territory.
I find that slugs have significantly less ME than pellets of comparable or lighter weight.
(Also, they are hitting all over 4 inches at my 100 yard target.)
SET UP:
—Diana Skyhawk, with drop-in LW choked barrel, 17.7 twist rate, Huma, 22cal
—Mean muzzle energy (ME) was determined over a 10 shot string
—Pellets unsorted from the can
—Extreme muzzle velocity spread is usually less than 20fps
—Range to target 100 yards
—10-shot groups
—Very little wind
PELLETS:
The heavier = the more ME, just like expected
29.3FPE —> 15.89gr at 912fps = JSB Domed, 5.53mm head | 3.0" group
30.1FPE —> 16.76gr @ 910fps = H&N Terminator
30.6FPE —> 18.13gr at 872fps = JSB Heavy
31.3FPE —> 21.14gr at 817fps = Baracuda Match, 5.52mm head
33.3FPE —> 25.39gr at 769fps = Monster Redesigned
30.8FPE —> 29.17gr at 690fps = Piledriver
SLUGS:
Heavier than pellets —> but less ME than pellets!?!
27.6FPE —> 15.0gr at 910fps = Slug with .217 head | 9.1" group (only 6 shots)
27.5FPE —> 17.5gr at 841fps = Slug with .2175 head | 9.0" group
27.2FPE —> 20.2gr at 779fps = Slug with .217 head | 4.5" group
28.1FPE —> 20.2gr at 791fps = Slug with .218 head | 4.1" group
28.7FPE —> 23.0gr at 749fps = Slug with .217 head | 7.5" "group" while 3 missed the target!)
QUESTIONS:
(1) The slugs are heavier than the pellets, but they still don't produce more power in the rifle?!? — I need it to be the other way around!
What's going on here?
(2) The JSB Domed (15.89gr) made a 3" group with 10 shots, at 100y. At 50y I usually get 1".
Of five types of slugs two made a 4" group, three 8-9".
What do I need to do to hit smaller groups with both pellets and slugs?
Lots to learn for me!
Thanks for your help!
Matthias
Please help me to understand what's going wrong on my first-ever venture into slug territory.
I find that slugs have significantly less ME than pellets of comparable or lighter weight.
(Also, they are hitting all over 4 inches at my 100 yard target.)
SET UP:
—Diana Skyhawk, with drop-in LW choked barrel, 17.7 twist rate, Huma, 22cal
—Mean muzzle energy (ME) was determined over a 10 shot string
—Pellets unsorted from the can
—Extreme muzzle velocity spread is usually less than 20fps
—Range to target 100 yards
—10-shot groups
—Very little wind
PELLETS:
The heavier = the more ME, just like expected
29.3FPE —> 15.89gr at 912fps = JSB Domed, 5.53mm head | 3.0" group
30.1FPE —> 16.76gr @ 910fps = H&N Terminator
30.6FPE —> 18.13gr at 872fps = JSB Heavy
31.3FPE —> 21.14gr at 817fps = Baracuda Match, 5.52mm head
33.3FPE —> 25.39gr at 769fps = Monster Redesigned
30.8FPE —> 29.17gr at 690fps = Piledriver
SLUGS:
Heavier than pellets —> but less ME than pellets!?!
27.6FPE —> 15.0gr at 910fps = Slug with .217 head | 9.1" group (only 6 shots)
27.5FPE —> 17.5gr at 841fps = Slug with .2175 head | 9.0" group
27.2FPE —> 20.2gr at 779fps = Slug with .217 head | 4.5" group
28.1FPE —> 20.2gr at 791fps = Slug with .218 head | 4.1" group
28.7FPE —> 23.0gr at 749fps = Slug with .217 head | 7.5" "group" while 3 missed the target!)
QUESTIONS:
(1) The slugs are heavier than the pellets, but they still don't produce more power in the rifle?!? — I need it to be the other way around!
What's going on here?
(2) The JSB Domed (15.89gr) made a 3" group with 10 shots, at 100y. At 50y I usually get 1".
Of five types of slugs two made a 4" group, three 8-9".
What do I need to do to hit smaller groups with both pellets and slugs?
Lots to learn for me!
Thanks for your help!
Matthias