Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Reloading
300 U.M. bullet choice
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="budlight" data-source="post: 91556" data-attributes="member: 2939"><p>You said that you know what the chart said. I've been pounding away with a 28 inch barrel 30-378 and I found that it likes the 190 boat tails. They are more pleasant to shoot and make nice groups. I've tried IMR 7828 as the fastest powder and AA8700 as the slowest. Retumbo, h1000, R-25. I even did some experimenting with 80 grains of 7828 topped off with 25 grains of AA8700.</p><p></p><p>My friend and I have determined that the Weatherby factory rounds must be using a combination of powders to get the chrono speeds and accuracy that we have seen.</p><p></p><p>My advice is to buy a chrono and use it while bench rest shooting. I've seen 30-50 fps changes in speed go from 1 inch groups down to less than .5 inches. Mixing powder types is not for everyone. But i have seen that accuracy goes up if the same bullet speed is aquired with less pressure. In simple terms I beleive in a full case of slow powder over a 1/2 empty case of hot fast powder.</p></blockquote><p></p>
[QUOTE="budlight, post: 91556, member: 2939"] You said that you know what the chart said. I've been pounding away with a 28 inch barrel 30-378 and I found that it likes the 190 boat tails. They are more pleasant to shoot and make nice groups. I've tried IMR 7828 as the fastest powder and AA8700 as the slowest. Retumbo, h1000, R-25. I even did some experimenting with 80 grains of 7828 topped off with 25 grains of AA8700. My friend and I have determined that the Weatherby factory rounds must be using a combination of powders to get the chrono speeds and accuracy that we have seen. My advice is to buy a chrono and use it while bench rest shooting. I've seen 30-50 fps changes in speed go from 1 inch groups down to less than .5 inches. Mixing powder types is not for everyone. But i have seen that accuracy goes up if the same bullet speed is aquired with less pressure. In simple terms I beleive in a full case of slow powder over a 1/2 empty case of hot fast powder. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
300 U.M. bullet choice
Top