Kids rifle manifesto

[deer_hunter132]

243_2_55

there isnt any real light data there it seems for .243w; ive used imr4198 in a 7RM with 120gr & 139gr pills and it worked great for reduced loads.
at 100gr pills for .243 there is quite a few options

243_2_100

Varget From 30.0 grains to 34.5 grains, i mean thats not a ton of powder.

 

[beerbucksducks]

Thanks! From what I’m seeing and what I have on hand, looks like 70-85 grain with 4064 or varget might be a good place for lower powder charge and lighter bullets.


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[deer_hunter132]

Thanks! From what I’m seeing and what I have on hand, looks like 70-85 grain with 4064 or varget might be a good place for lower powder charge and lighter bullets.


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give it a shot and see. theres a balancing act with case fill vs powder burn rate. too slow of a burn rate with too low of a case fill and you get S.E.E. (secondary explosion event) and its a bomb, literally. I would try to stay 70%+ case fill regardless of "rifle" powder. pistol powder is going to have a low fill % and thats ok; mostly. the biggest issue is where the powder column is located (point rifle up or down first) and powder shifts in the case alot, which causes wide FPS variations, typically. not always ideal. things can get spicy quick with the fast burn powder too so being extra cautious when loading is necessary. Personally i can tell the difference in a 6 dasher vs a .243w with the same bullet, but 200fps less when shooting them back to back. thats the difference of 32-35gr of powder varget/4350 vs the 42gr range of 4350 type powder. close to the same weight gun too.