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> Precision long range hunting and shooting
> Magnum vs LR primers
Magnum vs LR primers
@ 02:53 am (GMT) |
deerndingoHi All,Well, I'll admit it. I made a mistake. I used LR primers in a 7mmRM for load development using new Sako brass. I pushed the load up to 3120fps and thought that backing down to around 3000 would be more what I was after. That would mean 63gr of RE22 under a 162SST pill. Through the week I realised that I'd used LR primers. I'm thinking I'll have to back off about 1.5grains to allow for the use of magnum primers. Your thoughts (not on the dumb mistake - that's my job) |
Replies
@ 03:43 am (GMT) |
jason brownRe: Magnum vs LR primersI think you will find a lot of guy here are using a normal large rifle primer. I my self am using the federal 210 standard primer.im not sure about the powder you use. there are other threads here on loading the 7mag, take a look. but I guess if you want a magnum primer and if whatever your doing is working. then its all good. |
@ 06:43 pm (GMT) |
Nathan FosterRe: Magnum vs LR primersHi Ian, no worries, you don't really need a magnum primer with that charge rate of RE 22. If accuracy and ES are good, stay with it. I don't often use a magnum primer with the 7mm RM unless I am trying to alter harmonics or ES in a finicky rifle.I find that the 215 generates 40fps over the 210 primer which is equivalent to 1 grain. So if you want to re-explore, drop 1.5gr below the sweet spot and work back up. |
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@ 05:29 am (GMT) |
deerndingoRe: Magnum vs LR primersIn my previous post I made a mistake and said 63 grains. No...68grains. Sounds better doesn't it Nathan. |
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@ 01:43 pm (GMT) |
Nathan FosterRe: Magnum vs LR primersMuch better. I was thinking- man that's a tight tolerance rifle, a no throat. |
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