Many thanks for comments, first at all I want to offered my deepest apologizes to all you because my poor explanation about my doubt, right now I am reloading cartridges with bullet of 125 grn, IMR 7625, and people told me that the total length (cartridges + bullet) should be 1248 and 1250, but my gun (Bul M5) it’s present problems with the ejection and the extraction (the magazines are OK as I can see), I am reloading with 7.0 grn and the speed with a 125 grn plumb bullet is 1335 ft/sec (factor 16600), so I thinking that the problem is the length (1250), probably it’s incorrect.
Any help I appreciate
Joe