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NON-TYPICAL rifle build in mind; need some help...

I have nothing against a long action at all. I've had my share of long actions and didn't mind them one bit. My whole concern was getting enough energy/speed to ethically take elk at longer ranges. I always thought the magnum cartridges needed the longer barrel length to burn the powder. Just curious what type of speeds you are getting with a 300RUM on a 20" barrel?
20" will run a 180@ 3115 es of 15.
22" will run 215@ 3k es of 10 and a 181 hammer @3200 es of 13 this rifle smashed elk this year with 215 berger!
both with H1K Remington brass nothin fancy..

for comparison i did a 30 nosler in a 20" proof and it ran a 215 a little over 2800 with h1k

these are all accuracy nodes with the gold standard of powders!
 
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20" will run a 180@ 3115 es of 15.
22" will run 215@ 3k es of 10 and a 181 hammer @3200 es of 13 this rifle smashed elk this year with 215 berger!
both with H1K Remington brass nothin fancy..

for comparison i did a 30 nosler in a 20" proof and it ran a 215 a little over 2800 with h1k

these are all accuracy nodes with the gold standard of powders!
Those are some good numbers. Forgive me for my ignorance but what are you referring to when you write "es"?
 
"es" = Extreme Spread - the difference from the maximum and the minimum velocity of a given string of shots. The tighter they are, the more consistent the downrange elevation can potentially be.

In addition to low ES, we also want as low as possible SD (standard deviation) which is the positive and negative variation ("deviation") from the average within 1 standard deviation. https://en.wikipedia.org/wiki/Standard_deviation

Redneck descriptions ...

ES - difference between fastest and slowest
SD - how much faster or slower the closest 2/3(ish) are from the overall average
 
"es" = Extreme Spread - the difference from the maximum and the minimum velocity of a given string of shots. The tighter they are, the more consistent the downrange elevation can potentially be.

In addition to low ES, we also want as low as possible SD (standard deviation) which is the positive and negative variation ("deviation") from the average within 1 standard deviation. https://en.wikipedia.org/wiki/Standard_deviation

Redneck descriptions ...

ES - difference between fastest and slowest
SD - how much faster or slower the closest 2/3(ish) are from the overall average
Thank you
 
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