Joy, - just what I didn't want to see....
So I set out on a chrono mission this morning to test some old samples of W-540 (HS6), and W-571 (HS7) for reduced payload applications, in both, 12-gauge, and 20-gauge. While I was at it, I decided to chrono some of my new .410 reloads. I wasn't too happy about the numbers...
Temp: 71.8 degrees.
Gun: Citori .410
Chokes: SKT/SKT
Chrono: Pro Chrono digital
Distance: 4 feet
Shots: 8
Hulls: AA HS 3rd reload
Powder: 16.4 gn 300-MP
Shot: 1/2 os (218-220 grains)
Wad: CB5050-410HS
Primer: W209
Hi: 1238
Lo: 1163
Avg 1205
EV: 75
SD: 22
What's going on with this load, and how do I troubleshoot it ?
I'm using a red PC baffle, and spot checking drops shows that it's a very very consistent 16.4 grains. Shot drops are really consistent at ~218-220 grains. Crimps look really consistent, and seem deep enough.
Is it wad, or is it the powder, or maybe the Pro Chrono digital doesn't read a .410 shot very well ?
Is there another preferred .410 wad to try here ? Outside of changing the wad, the only other thing I can do is change powder (I do have a fresh keg of H110).
I need (would like to) to cut the above EV/SD in half.
Any help is appreciated.
The HS6, and HS7 (with reduced payloads) loads did awesome, - better than I ever imagined with EV's/SD's of 6 and 3.
So I set out on a chrono mission this morning to test some old samples of W-540 (HS6), and W-571 (HS7) for reduced payload applications, in both, 12-gauge, and 20-gauge. While I was at it, I decided to chrono some of my new .410 reloads. I wasn't too happy about the numbers...
Temp: 71.8 degrees.
Gun: Citori .410
Chokes: SKT/SKT
Chrono: Pro Chrono digital
Distance: 4 feet
Shots: 8
Hulls: AA HS 3rd reload
Powder: 16.4 gn 300-MP
Shot: 1/2 os (218-220 grains)
Wad: CB5050-410HS
Primer: W209
Hi: 1238
Lo: 1163
Avg 1205
EV: 75
SD: 22
What's going on with this load, and how do I troubleshoot it ?
I'm using a red PC baffle, and spot checking drops shows that it's a very very consistent 16.4 grains. Shot drops are really consistent at ~218-220 grains. Crimps look really consistent, and seem deep enough.
Is it wad, or is it the powder, or maybe the Pro Chrono digital doesn't read a .410 shot very well ?
Is there another preferred .410 wad to try here ? Outside of changing the wad, the only other thing I can do is change powder (I do have a fresh keg of H110).
I need (would like to) to cut the above EV/SD in half.
Any help is appreciated.
The HS6, and HS7 (with reduced payloads) loads did awesome, - better than I ever imagined with EV's/SD's of 6 and 3.