# Primer/Pocket Dimensions **Ballistic Tools** <https://ballistictools.com/articles/primer-pocket-depth-and-diameter.php> **Snipers Hide (A Primer on Primers)** [https://www.snipershide.com/shooting/threads/a-primer-on-primers.6936610/](https://ballistictools.com/articles/primer-pocket-depth-and-diameter.php) **Sierra (Primer Substitutions)** <https://www.sierrabullets.com/primer-substitutions/> Discussion on Primer Seating <https://forum.accurateshooter.com/threads/primer-seating-depth.3936969/page-7> Squish <https://forum.accurateshooter.com/threads/primer-seating.4051015/> Seat at pocket depth plus +.002 Ruger Forum Anvil proud distances (measured with ordinary calipers) <https://www.rugerforum.net/threads/primer-anvils.120513/> Some measurements: Rem 9 1/2 - .030 crown to anvil, .015 crown to cup, .015 anvil exposed CCI 34 - .026 crown to anvil, .020 crown to cup, .006 anvil exposed CCI 200 - .026 crown to anvil, .010 crown to cup, .016 anvil exposed