## Tutorial Description: #### https://rumble.com/v2o9szi-unsupported-anvils.html #### Pinch Gap = Bridge Thickness 'Bridge Thickness' is the correct term for the distance between the nose/tip of the anvil and the bottom of the primer cup ### Unsupported Anvils Our success rate usually ranges from "Fantastic - only once in a Blue Moon" to "No matter what I do - my failure rate is about 2%". I think I can speak on behalf of all the members in the MeWe Group, "2% FTF (failure to fire) is not acceptable". We have been chasing down the causes of the "2%" for a considerable time. The "unsupported anvil" is a key contributor to the cause of these failures. Seat your primers as deep as your equipment will allow. The legs of the anvil should come in positive contact with the bottom of the primer pocket. Ideally - compressing the powder (by the anvil) a distance of 0.002 is ideal. This is known a primer's "Crush Depth". We are mostly concerned with FTF's but for accuracy and consistency see: Rim Thickness variations account for primer seating variations. Ref: [https://www.evernote.com/shard/s378/sh/2146b2b5-127d-95d2-5d02-dae4572e7063/LmrkKfpAwAzRxuQlnXBIiK0e6LjnbZyk4sO-0uvlQiYJCETacQEMjIyZKA](https://www.evernote.com/shard/s378/sh/2146b2b5-127d-95d2-5d02-dae4572e7063/LmrkKfpAwAzRxuQlnXBIiK0e6LjnbZyk4sO-0uvlQiYJCETacQEMjIyZKA) #### During Reloading - 'Feel' comes into Play I personally prefer to "hand seat" my homemade primers because I can feel when the primer physically "bottom's out" in the primer cup and I know when to stop. This is a particular disadvantage when using a fully automated Dillon with auto-drive. Only commercial primers should be utilized for this type of operation. _ _ _ It's interesting to note that Jb no longer that concerned with headstamp sorting since he has proven to himself -pocket seating is reliable.