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harbinger

harbinger

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Does changing your powder really make a huge difference for hunting acuracy? I have used imr 4350 exclusively for my .270 but wonder if there is a better one out there. also how does the shape of the powder granules effect the end product? (consistenlty accurate groups)
Would you recommend changing powder if I was to start using magnum primers?
 
Before changing anything on your loads, you have to start all over with working up loads. Magnum primers will affect the pressures of your loads. Best bet, grab some manuals and read up on load development, pressures and testing. Information is your freind! Stay safe!
 
The shape means nothing, but the burn rate does. So does the bullet weight. My old Lyman manual gives IMR4064 as the powder in the accuracy load for both a 130 and 150 grain jacketed bullet. IMR4350 for the factory duplication load. Magnum primers are not needed, nor will they improve accuracy, in a .270.
 
IMR 4831, RL19, H4831, RL22, all would be good alternatives for your 270 Win

if you're going to be hunting cold weather with a powder slow burning like 7828, H1000, RL25, Id try a magnum primer, even in a 270. Of course, work up slowly from a few grains below max.

check out some reloading manuals too
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harbinger said:
Does changing your powder really make a huge difference for hunting acuracy? I have used imr 4350 exclusively for my .270 but wonder if there is a better one out there. also how does the shape of the powder granules effect the end product? (consistenlty accurate groups)
Would you recommend changing powder if I was to start using magnum primers?
Click to expand...

YES & NO :rolleyes:

Most hunting rifles don't see a huge accuracy diff between powders with similar performance in your rifle!
There is ALWAYS a better powder but it's not worth the chase in hunting guns!
That said :cool: try a bunch of factory loads & you'll likely see a huge diff???
If your gun is accurate enough for your requirements & is close to max velocity, then spending more time shooting & developing your skills will give you better results!

:) :) It's all good, if you want to try diff powders go for it, that leads to more shooting which is good to!!

Mag primers are for the most part not required in the 270, especially with 4350 powder.
 
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