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LRMs can certainly have an effect on a load compared to normal Large Rifle primers.What's your opinion regarding using Large Rifle Magnum primers to ignite the powder in the 6.5mm Creedmoor case? I have no standard-power LR primers and I'd bet the farm that Scheels doesn't have any, either...
I'm guessing the LRM primer throws a larger flash through the powder column. I doubt the temperature of the flash is a lot higher than the flash from a standard-power primer-- just that the flash is larger. A "bigger bomb," if you will. Part of my case prep is to chamfer the inside of the primer hole. I'm telling myself the chamfered hole will allow for the flash to spread itself into a wider funnel. The chamfering tool also enlarges the primer hole a bit, making it identical from case to case. All my cases are trimmed to the length the Lee Precision case trimmer provides. All the mouths of all the cases are chamfered inside and outside. Just waiting on what our members have to say about the possible use of Magnum versus Standard primers before we take the next step...LRMs can certainly have an effect on a load compared to normal Large Rifle primers. If the load is worked-up from a safe margin, it can work.
Alrighty, then! I'll use the Large Rifle Magnum primers I have. I'm not concerned about their high cost: I guessing I paid fifteen to twenty dollars for the 1000-count box I've had since January of 2007.Mag primers don't have a larger flash or more power. They work on magnum loads of slow-burning powders by providing a longer burn. ... Other than the higher cost, I would not avoid using them in standard loads.