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 WM with 190 VLDs
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="Buffalobob" data-source="post: 86328" data-attributes="member: 8"><p>SW</p><p>I have a MS word table that has about forty BC's on it and they are all started with a muzzle velocity of 3000fps and then checked at 500yds and then evry 0.05 BC I checked velocity at 1000yds to get a "feel" for changes in impact velocity for changes in BC.</p><p></p><p>In very rough terms every 0.1 of BC will give you about 150 - 200 fps at 1000yds.</p><p></p><p>Of the starting velocity you get about 50 % of it at 1000yds. Or every 100 fps more or less gives you about 50 fps more or less at 1000yd (for an average BC ) Obviuosly a low BC you get much less of you starting velocity increase at 1000yds and for a high BC you get much more.</p><p></p><p>So for a BC of 0.5 and a starting velocity of 3000 fps you can give up about 100 fps at the start if you get about 0.05 more BC or more. If you give up 100fps to get 0.02 more BC then you will lose impact velocity. However, if you got extra weight or better construction then you may well get bone crunching power at 1000yds even with the slower bullet.</p><p></p><p>If you want the file just email me. The file is typically me- confusing and imcomphrehisnible without an explanation.</p></blockquote><p></p>
[QUOTE="Buffalobob, post: 86328, member: 8"] SW I have a MS word table that has about forty BC's on it and they are all started with a muzzle velocity of 3000fps and then checked at 500yds and then evry 0.05 BC I checked velocity at 1000yds to get a "feel" for changes in impact velocity for changes in BC. In very rough terms every 0.1 of BC will give you about 150 - 200 fps at 1000yds. Of the starting velocity you get about 50 % of it at 1000yds. Or every 100 fps more or less gives you about 50 fps more or less at 1000yd (for an average BC ) Obviuosly a low BC you get much less of you starting velocity increase at 1000yds and for a high BC you get much more. So for a BC of 0.5 and a starting velocity of 3000 fps you can give up about 100 fps at the start if you get about 0.05 more BC or more. If you give up 100fps to get 0.02 more BC then you will lose impact velocity. However, if you got extra weight or better construction then you may well get bone crunching power at 1000yds even with the slower bullet. If you want the file just email me. The file is typically me- confusing and imcomphrehisnible without an explanation. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
300 WM with 190 VLDs
Top