Cci Primer Recommended Seating Depth Calculator
OK, I have a light varmint rifle in 6PPC. I have 50 fireformed brass that have been annealed after forming.
I have VARGET, H322, H4895, CFE223....also CCI 400 and CCI 450 primers....also Barts 68gr, Berger 68gr, Berger 64gr bullets.
Any tips where to start component=wise? I’m thinking get close to a load with the Barts, CCI450 and CFE223. Then try substituting powder. I’m thinking powder charge needs to be my first variable, then seating depth, then neck tension, then powder, then try other bullets.
That said, are one of the other powders a better starting point? Are CCI 400’s a better starting point?
Cci Primer Recommended Seating Depth Chart
It is ever so slightly hotter than the small rifle magnum primer and it comes with a brass colored thick cup. This primer can be used in place of the SRM primer or used when a different powder is used that is hard to ignite.' Primers recommended for use in.223 Rem/5.56 semiautomatic rifle loads: CCI #41, 450, BR4. Super 1050 Primer Depth. In the toolhead, locate adjustable bolt, # 12819, which applies downward force from the toolhead to the cylinder. By adjusting this bolt up or down in minute increments, (1/4 - 1/2 turn) you can control how deep primers are seated into the case. If you need further assistance please call us at 800-762-3845.
Primer seating depth – how far the primer is inserted into the shell case – is carefully controlled in factory ammunition. You also need to be aware of primer seating depth when reloading. Seating the primer too deep below flush can damage the internal components, leading to misfires and inconsistent ignition. Seating the primer too high (above flush) can cause the cylinder to not rotate in revolvers, and can cause problems when the bolt slams home in semi-autos. Seating above flush can also result in misfires.
The only proper primer seating depth is to the bottom of the pocket. Every case in a box of Lapua cases has a different pocket depth since they are swaged in place, not machined. Other cases that use the small rifle primer can use the above primers only if moderate loads are used. Keep to the lower end of reloading recommendations. Cases that utilize Small Rifle primers and operate at higher pressures (55,000 psi) should use CCI 450, CCI BR4, Fed 205 and Rem 7 1/2 etc.
Unless you are reloading on a progressive machine (each pull of the handle yields a loaded cartridge), the primer seating depth is controlled by feel as the primer is inserted. This is especially true if you are using a handheld priming tool. The primer seating depth is best checked with your finger tip. Sliding the index finger across the bottom of the primed shell case will quickly determine if the primer is above or below flush.
The ideal seating depth is just below flush. As you gain experience in loading, the feel to accomplish this will become familiar. It is best to use your finger to test every primed shell case. If the primer is above flush it can be run through the seating operation again to push it below flush.