onlybrowning
New member
I was given some bad advice by a gunsmith that I had work on a gun of mine, and wanted to ask some advice. I was told to use magnum primers in my .270 "because I hunt in cold temperatures and this provides a better ignition." I had read this previously in a muzzleloading magazine as well for muzzle loaders, so I figured it was legit. Now that I have talked to many others and read a lot, I have found it to be nonsense. So, my question is, do I have to start over with developing this particular load? It was 53.25 gr of H-4831sc with a 150 gr Nosler Ballistic Tip and I was able to shoot under an inch usually with it. Where should I start to get about the same pressure with a standard LR primer? The velocity seemed to be pretty good because I shot three deer with it with the exact desired result.