300 win. Mag

missourideere

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Joined
Jun 1, 2015
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24
I'm shooting 73.5 grains of imr 7977 with a 208 a max book shows at 75 grains I should be shooting 2852fps. I dont have a chronograph so I just checked how much bullet drop was from 100yds-400yds it dropped 22" i put that in my calculator and it comes out to @ 3200fps. Is there something im missing? My barrel is 2" longer then the book used to test
 
Save up and invest in a coronagraph (pun intended for those that know which thread I am referring to). 😇Borrow or have a friend chrono for you, otherwise, it is just a WAG. You want as close to "actual" as possible because each rifle is different. I have three .300 WMs with the same barrel length and I can fire same load with varying velocities. "IF" you're happy with a WAG, then press on.

Good luck!
 
Last edited:
Save up and invest in a coronagraph (pun intended for those that know which thread I am referring to). 😇Borrow or have a friend chrono for you, otherwise, it is just a WAG. You want as close to "actual" as possible because each rifle is different. I have three .300 WMs with the same barrel length and I can fire same load with varying velocities. "IF" you're happy with a WAG, then press on.

Good luck!
Yes I believe I will just buy one thank you I hate guessing
 
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