Primers! Very interesting.
Posted: Wed Oct 27, 2010 9:01 am
I decided it was time to load up for my non-varmint hunting guns.
I have two. One is a Pre-64 Model 70 custom in .260 and the other is a .340 Wea. Mark V that I had rebarreled for .330 Dakota.
I went to the new Sportsman's Surplus store too look at the bullets now available. I was most impressed with the new Hornady line of SST bullets in both calibers. 129 SST in 6.5 and 225 SST in .338. I also purchased the new Hornady reloading manual which had extensive new loads for all the new rounds like WSM, WSSM, Dakota, etc.
Since I am intending to load to max in both cases, something I don't do with my target and varmint rifles, I decided to duplicate all the info given by the book including exact same primer as used in development. That was REM 9 1/2 in the .260 Rem Cases and the F215M in the Dakota .330. The book recommended the WLRM in the 7mm WSM.
So I got those primers. Well, it turns out that using a Hornady handheld priming tool with cases and primers shown above that the primers were a light press fit when the primers used were those recommended by the book and also were in most cases the same mfg. as the cases. It appears that these manufactures design forming punches that precisely match their primer size!
Big secret that I didn't know before.
I have two. One is a Pre-64 Model 70 custom in .260 and the other is a .340 Wea. Mark V that I had rebarreled for .330 Dakota.
I went to the new Sportsman's Surplus store too look at the bullets now available. I was most impressed with the new Hornady line of SST bullets in both calibers. 129 SST in 6.5 and 225 SST in .338. I also purchased the new Hornady reloading manual which had extensive new loads for all the new rounds like WSM, WSSM, Dakota, etc.
Since I am intending to load to max in both cases, something I don't do with my target and varmint rifles, I decided to duplicate all the info given by the book including exact same primer as used in development. That was REM 9 1/2 in the .260 Rem Cases and the F215M in the Dakota .330. The book recommended the WLRM in the 7mm WSM.
So I got those primers. Well, it turns out that using a Hornady handheld priming tool with cases and primers shown above that the primers were a light press fit when the primers used were those recommended by the book and also were in most cases the same mfg. as the cases. It appears that these manufactures design forming punches that precisely match their primer size!
Big secret that I didn't know before.