Ran a comparison of Wolf 556, CCI 400, CCI 450 and CCI 41 primers.
Load consisted of 26gr H335, once fired LC08 brass trimmed to 1.75", Hornady bulk 55gr FMJ and OAL 2.22"
Gun: LaRue Stealth 16"
Chrono: Pro Chrono
The temperature outside was 27deg but the ammo was keeped at 68deg until fired. The barrel was cooled between batches until I could hold onto it. The barrel was brought up to temp before the first batch. All batches were 15 shot each.
Wolf 556
High 2976
Low 2892
Ave 2944
ES 84
SD 27
CCI 400
High 2976
Low 2842
Ave 2926
ES 134
SD 44
CCI 41
High 2956
Low 2886
Ave 2921
ES 70
SD 23
CCI 450
High 2996
Low 2886
Ave 2954
ES 110
SD31
The Wolf primers were the easies to seat with the CCI 450 the hardest (they took some force). The other two were only slightly harder to seat than the Wolf.
The CCI 400 were the flattest after firing. The Wolf and CCI 450 showed the least flatting, CCI 41 was in between.
On a side note Wolfs Magnum small pistol primers vs CCI standard small pistol. The Wolfs produced lower speeds and higher ES and SD in my 9mm. Listed are just two tests, but Wolf consistently under perform CCI.
9mm / Browning Hipower
CCI small pistol primer
5.6gr Power Pistol
124gr JHP
OAL 1.10
Ave 1123
ES 42
SD 11
Wolf small pistol magnum
5.6gr Power Pistol
124gr JHP
OAL 1.10
Ave 1099
ES 65
SD 18