Could caps do this?

[Ed C.]

For a long time I have been using 1075 plus RWS caps and the .50 cal. Investarms Hawken has been very accurate and consistent shooting off of the bench at 50 yds. Today I went out used the same load, patches, and patch lube and had flyers both above and below (about 8") POA with the only difference being I used CCI #11 caps. Could the caps cause this? Hard to believe they would make that much difference. I've used CCI before and never seemed to have a problem.

 

[Grenadier1758]

Yes, @Ed C., changing caps can cause a difference in on target accuracy. You have different heat profiles and quantities of the priming compounds. A CCI magnum might come close to the performance of the RWS 1075 caps.

Ask the reenactors who have observes such performance changes using the CCI Reenactor (For firing blanks) Musket caps compared to the RWS Musket caps.