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6.5-7mm prc

I'd like a 40* improved 7PRC, and then a simple .264 neck down from it.
140-195 gr covers a lot.
** Sorry I posted this before I had read down. Seems I'm the only thinking this.....

I like what you are proposing but I'm thinking neck it down to 277 and throat it for the high BC bullets.
 
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Speaking of 277. I just did a 270WSM with .200 Freebore and see below. Showing with Badlands 140 and 150. Total of .200 freebore on it. That 150 is 1.635 long for reference. Hope to shoot it tomorrow or next weekend.
IMG_2120.jpeg
IMG_2119.jpeg
 
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To me the .277 necked down from 284/7prc is not worth the squeeze. Bullet weight and barrel length being equal, the 28 cal velocity should offset the 27 cal. BC. Not to mention bullet selection in favor of the 7prc. Now stick that 27 cal in a 300 prc case and you will have something worthwhile. Just my 2 cents.
 
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