243 volcity ????

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Rendlaw

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Okay i got a 243 Winchester xpr with 22" barrel , 110 twist, 85 gr spitzer, 38.6 gr imr4350, what is the volcity?????
 
From the hodgeson site. 24”, not 22”.

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I looked in Hornady 9, Sierra V, Speer 14 and Nosler 9 manuals - where I could find 85 grain spitzer, and IMR 4350 - that load is below the Start loads given. So no clue - you would have to find use of a chronograph and measure it. Where did you get that recipe??
 
Okay - I did that - returns one recipe, I think, for a Barnes TSX bullet - was quite sure not to use data for mono bullets with cup and core bullets - I assumed OP had a cup and core, like Sierra SPT.
 
I do not think anyone can be that exact - if you want to know, you have to use a chronograph and measure - that same round in your rifle, my rifle and his rifle likely produces three differing velocities. Also, the full recipe that you used?? Brass brand?? Primer??? What 85 grain Spitzer was it - I suspect there are or were many made?? You can probably guesstimate about 30 fps or so for each inch difference that your barrel is from the data set barrel. But data set was based on a particular brand of brass, a particular primer, and a particular brand of bullet. Probably want to know that, besides bullet weight and powder type and powder weight.
 
Ill just zero at hundred yards and go back to 200 and see how much the drop is and adjust my velocity accordingly on my ballistics app
 
Chronographs are not expensive and provides the information you seek. Everything else is a approximation which is okay if you are happy with your results.
 
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