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
Load development.....opinions??
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="willyqbc" data-source="post: 1517712" data-attributes="member: 17279"><p>continued with load development today with 2 priorities in mind.</p><p></p><p>First, I wanted to see how high I could go before my POI shifted, so loaded up 45.0, 45.1, 45.2, and 45.3 and shot 5 shot groups at 200yds. 45.1 and .2 grouped with the original 45.0 loads and 45.3 showed a 2" jump up in point of impact. So looking back to earlier testing, I can see that i have a range of 44.5 - 45.2 where my POI does not shift. In that range, 45.0 showed the tightest groups....considering that gives me some "wiggle room" for temperature fluctuations, reloading variation etc....i'm pretty happy with that charge.</p><p></p><p>Secondly, I wanted to see if I could tighten up the group with seating depth so loaded 5 each at .010 off the lands to .050 off using the 45.0 charge....group size was as follows at 200 yds</p><p></p><p>.010 - 1.172" .559 moa</p><p>.020 - 1.505" .718 moa *this was the original seating depth</p><p>.030 - 2.104" 1.004 moa</p><p>.040 - 2.485" 1.186 moa</p><p>.050 - 2.162" 1.032 moa</p><p></p><p>So, while testing charges from 42.5 to 45.5 we saw a difference of 1.217 moa at 110 yds from worst group to best, and while testing 44.4 - 45.0 at 220 yd we see a difference of .904 moa from worst to best group.</p><p></p><p>while testing seating depth from .010 off to .050 off at 200 yds we see a difference of .627 moa from worst group to best</p><p></p><p>Obviously would need many more rounds to be statistically significant....but, on the surface it seems that the powder charge has the potential for bigger variation in group size than does seating depth.</p><p></p><p>That being said, my suspicion is had I done seating depth first and charge second, I would have probably ended up at the same place. Not sure I believe either one is more important that the other, but rather that the specific combination is what works....and very well may not be the only one. I suspect i could load anywhere from 44.4 up to 45.2 and find a different corresponding seating depth that would perform as well as 45.0 @ .010" off. </p><p></p><p>Chris</p></blockquote><p></p>
[QUOTE="willyqbc, post: 1517712, member: 17279"] continued with load development today with 2 priorities in mind. First, I wanted to see how high I could go before my POI shifted, so loaded up 45.0, 45.1, 45.2, and 45.3 and shot 5 shot groups at 200yds. 45.1 and .2 grouped with the original 45.0 loads and 45.3 showed a 2" jump up in point of impact. So looking back to earlier testing, I can see that i have a range of 44.5 - 45.2 where my POI does not shift. In that range, 45.0 showed the tightest groups....considering that gives me some "wiggle room" for temperature fluctuations, reloading variation etc....i'm pretty happy with that charge. Secondly, I wanted to see if I could tighten up the group with seating depth so loaded 5 each at .010 off the lands to .050 off using the 45.0 charge....group size was as follows at 200 yds .010 - 1.172" .559 moa .020 - 1.505" .718 moa *this was the original seating depth .030 - 2.104" 1.004 moa .040 - 2.485" 1.186 moa .050 - 2.162" 1.032 moa So, while testing charges from 42.5 to 45.5 we saw a difference of 1.217 moa at 110 yds from worst group to best, and while testing 44.4 - 45.0 at 220 yd we see a difference of .904 moa from worst to best group. while testing seating depth from .010 off to .050 off at 200 yds we see a difference of .627 moa from worst group to best Obviously would need many more rounds to be statistically significant....but, on the surface it seems that the powder charge has the potential for bigger variation in group size than does seating depth. That being said, my suspicion is had I done seating depth first and charge second, I would have probably ended up at the same place. Not sure I believe either one is more important that the other, but rather that the specific combination is what works....and very well may not be the only one. I suspect i could load anywhere from 44.4 up to 45.2 and find a different corresponding seating depth that would perform as well as 45.0 @ .010" off. Chris [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Load development.....opinions??
Top