Yes, I use Lge CCI std. and Fed 210 Match Primers to, Lite Off,.. H-380 & IMR 4895 in my .22-250 and F-210's, W/ StaBall 65 Powder, in my 6.5 Creed.
both Primers are, very Consistant "Accuracy wise", in Winter or, Summer for Me.
David Tubb, did some Studies on Small Primers in Winter with, His 6 XC Cart and had, "Problems" BUT, the Hotter, CCI, 450's,. SHOULD Be,.. Okay.
IF, it AIN'T Broke, WHY, Mess with,..IT ??? ( My thinking,. LOL ).
There's been, many complaints about "Hang Fires" with, NON Magnum, Small Primers,..
BUT, I don't know, WHAT Brands, of, Primers, were used.