Subsonic in everything I’ve shot it in with a suppressor. From a beretta 21A through a 24” rifle. But I don’t own a chronograph either. Just using the Mk1 calibrated human ear.Originally Posted by Outpost75
Subsonic in everything I’ve shot it in with a suppressor. From a beretta 21A through a 24” rifle. But I don’t own a chronograph either. Just using the Mk1 calibrated human ear.
I like the 45gr CCI rounds for my semi autos. They have a rounder nose and seem to have a little more oomph to cycle the action.
For my bolt guns I prefer Eley SSHPs. Much more accurate and the lead seems softer.
General blasting ammo is Aguila 40gr std velocity.
Accurate plinking ammo is Geco Bolt Action ammo that I stocked up on at the beginning of the pandemic
Does anyone have actual chronograph data for this load from an autopistol with barrel of 6-3/4" or less? A High Standard HD Military or Model B - US either from 4-1/2" or 6-3/4" would be wonderful.
BLUF - most high velocity .22 LR is supersonic from barrels longer than 6 inches, but will be subsonic from barrels of 4-/2" or less.
To obtain 12 inches of gelatin penetration in .22 LR requires a striking velocity over 950 fps with a non-expanding 40-grain bullet.
As FYI my testing firing of a 1947 date of manufacture 6-3/4" barrel High Standard HD Military:
CCI Standard Velocity 40-grain gives 936 fps.
CCI Blazer 40 grain 1181 fps,
CCI Mini Mag 40-grain solid 1104 fps
Eley 40-grain Pistol Match 1012 fps
Eley 40-grain Subsonic HP 958 fps.
From 4-1/2" barrel 1942 Model B - US:
CCI Standard Velocity 40- grain. 868 fps
CCI Blazer 40-grain 1085 fps
CCI Mini Mag 40-grain solid 1068 fps
Eley Pistol Match 40-grain 938 fps
Eley Subsonic 40-grain HP 901 fps
Last edited by Outpost75; 10-30-2022 at 02:19 PM.
Chronograph data for CCI 45-grain Suppressor HP
High-Standard Model B - US 4-1/2" barrel 838 fps, 15 Sd
High Standard HD - Military 6-3/4" 893 fps, 17 Sd
Reply With Quote