Good call! I have the 50th edition. Will check the book when I get back from work today. Spoke to my smith he said the cci or winchesters also. Seems to be the general consensus. I just don't understand why the damn Federal primers are so hard to findDo you have the Lyman 49th or 50th edition? If so check page 57 that compares standard large rifle primers between Federal, CCI, and Winchesters, with the Winchesters being the "hottest" in that order. It may be that the magnum primers follow the same way.
Seems that the CCI 250s from a few people on here as well as all over the web and my trusted gunsmith are probably going to be my best bet as a replacement. Fingers crossed there doesn't happen to be a surprise run on them[emoji6]CCI 250 LRMP'S has been the only Magnum primer I have ever tested, the consistancy from lot to lot has been great, so I never tried anything else.
I'm also currently using it with Magpro in my .270 Winchester loads featuring the 150 grn ABLR, and so far it's been very consistant.
But I also use it for my 7mm Rem. Mag, with super results, never had an FTF from those primers with close to 3000 used.
Ah dangit! If anyone has any suggestions from their experience in a .300wby round using 180gr barnes tsx or any comparable round what their best combo with the cci 250 primers and powder is would be greatly appreciated. I am speaking in terms of powder/primer combo. Not necessarily specific recipes though any input is greatly beneficial to take into account.If you are going to use CCI 250 primers, do not use H4831. I tried to develop a load with this combination and could not get a group under 2.5" at 100 yards.
Bob