Another thought...key holing is caused by unstable bullets. #1 priority to help ensure a stable bullet, is to pick the length of the bullet suitable for the twist of your barrel.
One can also load a nice 150-170gr SPBT and put 1 in the chamber and 1 in the mag. This makes the 30-30 a 300 yd. shooter same as loading the polymer tipped 160 gr. Hornadys.
Norma site
http://www.norma.cc/en/Ammunition-Academy/Loading-Data/308-Winchester/
Ram also used to have data for 200gr...got it in my notes. Their website now goes up to a 190gr bullet...go figure.
Headstamp reference
http://www.afte.org/ExamResources/gallery2/v/Headstamp-Gallery/ http://www.afte.org/ExamResources/gallery2/v/Headstamp-Gallery/Letters_001/D/Dominion.jpg.html
Go to the "Letters" Album. Some headstamps have history, some only pictures.
147gr is the heaviest bullet I have ever seen data on for 9mm Luger in reloading manuals. I did run across this link...
http://stevespages.com/355p_4_158.html
It would be interesting to see if you pulled a bullet from your reloads, if the brass would still easily chamber. As mentioned, looks like the shoulders are scrunched a bit. Your pics look like the marks begin right at the ogive. Have you loaded these bullets for this rifle before?
One additional piece of data, when using military brass, it is recommended to use less powder due to the wall thickness of the brass. I use 1.5 grains less (H4895) when reloading LC 7.62x51 w/168gr bullet as compared to reloading my commercial brass.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.