Originally Posted by prairie_goat
Originally Posted by David_Walter
Originally Posted by prairie_goat


Might want to double check your data, hero.


You check it, hero.

https://www.ramshot.com/wp-content/uploads/2020/08/WesternPowdersHandloadingGuide8.0_WEB.pdf

My copy was a little older, but the new load book from Ramshot sure isn't in the 75K MPSI range if he adds 0.3 grains to the Sierra load.

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I know you were an officer, so I suppose I'll have to dumb it down for you. 46 grains is significantly different than the 57 to 61 in your post (that's more powder than a 30-06 will use with TAC and 155s). 2925 fps in an 18.5" barrel is more than Ramshot is achieving with their 24" barrel. A barrel 5.5" shorter than the test barrel is going to be slower, not faster. So, since velocity equals pressure, the 18.5" 2925 fps load in question is either a: significantly over pressure in order to achieve such high velocity, or b: the poster's chronograph is off.


The Barnes Data is what I used since the 155 Scenar is longer than the typical 155 grain bullet from any other maker because the entire nose is hollow almost to the ogive...maybe a little past. Maximum was 48.2 grains of powder to yield 2980ish FPS. Try it and see. In contrast a 46.2 grains of Varget with all the same components yields 2775 from the rifle above. 2812 from a 20 inch. And 2889 from a 22 inch. Some powders peak faster than others.