Since those first thirty rounds of Remington Cyclone (that grouped around 55-60mm for 10rds at 50m) I managed to get about half of my ammo test done tonight before it got too cold, I thought the shivering might start to affect the groups
At 50m, ten rounds of the following:
(Remington Cyclone ~ 55-60mm - first groups)
Eley Subsonic HP - 14mm
Eley Match - 24mm
Eley Edge - 24.5mm
RWS Rifle Match - 24.5mm
Eley Tenex - 25mm
Eley Club - 27mm
CCI Standard Velocity - 29mm (23.5mm without the one I pulled to the left)
American Eagle HVHP - 30mm
Winchester Subsonic Max 42 - 31mm
Highland RX HP - 31mm
Remington Subsonic - 34.5mm
American Eagle Suppressor 45gn 970fps - 37mm
RWS HVHP - 40mm
Blazer RN - 44mm
CCI Subsonic HP 1050fps - 50.5mm
Winchester T22 - 58mm
Federal GameShock 38gn HP - 68.5mm
CCI Quiet Seg HP 710fps - 84.5mm (220mm holdover)
Amazing was the Eley Subsonic HP - ten rounds into 14mm.
So far, it looks the most accurate in my Target is going to be Eley Subsonic HP, and in my Compact the Eley Edge.
With CCI Standard Velocity as a very good cheaper option in both rifles.
Hopefully I can get some more done tomorrow.
EDIT: Added from further down the thread.
https://enoughgun.com/forum/viewtopic.php?f=2&t=8123&p=128707#p129327Managed some more testing yesterday.
First I fired a ten-round group of Tenex from both rifles from cold bores. Interestingly, both threw the second shot low left - 31mm for the Compact and 33mm for the Target.
At 50m, ten rounds of the following:
Winchester Powerpoint 42 - 51mm
CCI Velocitor - 28.5mm
Winchester Superspeed - 60mm
Sellier & Bellot Subsonic - 27mm and 45mm
Sellier & Bellot Standard - 72mm
Sellier & Bellot High Velocity - 35mm
CCI MiniMag - 46mm
CCI Stinger - 48mm
CCI Copper-22 - 58mm
Remington Yellow Jacket - 54mm
Highland RX Subsonic - 32mm
Wichester Super-X Short - 90mm+
Eley Edge - 18mm (best of three groups)
CCI Standard Velocity - 18mm (best of three groups)
EDIT: Added from further down.
https://enoughgun.com/forum/viewtopic.php?f=2&t=8123&p=130808#p130808Norma Match 2 Training Ammunition - 30.5mm
Lapua Centre-X - 23mm
RWS Z-Lang - 80mm+ (130mm low)
RWS Club - 59mm
RWS Special Match - 23mm
RWS R50 - 40mm
RWS R100 - 24.5mm
RWS Subsonic HP - 35mm
Geco Rifle - 22.5mm
Eley Sport - 47mm (first eight into 21mm)
Federal Target Standard - 34.5mm
Federal Gold Medal Target - 29mm
Federal Premium Match - 28.5mm
SK Magazine - 27.5mm
SK High Velocity - 13.5mm
SK Standard Plus - 24mm
Remington Golden Bullet - 51.5mm
Remington Target - 38.5mm
I now have 510 rds through the Target and can see that Eley Edge and CCI SV both shoot consistently well in both rifles. CCI Velocitor is a good option for a high-velocity hunting round in both rifles as well. Highland RX HP is probably the best choice for cheap practice ammo. I would still like to try Highland RX Target and SK Rifle Match if I can get them.