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
338 Norma Reloading Data
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="SheepShapeAK" data-source="post: 2850634" data-attributes="member: 113908"><p>I would try out the .003" increments.</p><p></p><p>I'll look through my book and see what charges I have circled for the 250's. - 90.16 grains of H1000 only gave me 2900FPS, but at 300 yards it shot .618 MOA for a five shot group. Bullet was 2.946" base to ogive. </p><p></p><p>If you have an arbor press you can seat them long and then adjust the depth at the range. Even going in .006" increments to save ammo, then when you find a decent group size you shoot a group on either side of that group. Example, you shoot a 1/2 MOA group at 100 with your bullet seated at .015" off. Test a group at .012" off and .018" off.</p><p></p><p>You will find a seating depth node. Typically .006"wide. By this I mean you will have a window of .006" that won't impact group size as your throat erodes.</p><p></p><p>I have heard monos are a little more sensitive to this window, but I just don't know.</p><p></p><p>My 300 grain OTM's have a .006" window that will shoot bugholes at 100 yards and hold 1/2" MOA out to 1000 if I do my part. This also allows you some wiggle room without having to sort bullets.</p><p></p><p>These were three shot groups at 100 yards with those 300 OTM Bergers.</p><p>[ATTACH=full]474172[/ATTACH]</p></blockquote><p></p>
[QUOTE="SheepShapeAK, post: 2850634, member: 113908"] I would try out the .003” increments. I’ll look through my book and see what charges I have circled for the 250’s. - 90.16 grains of H1000 only gave me 2900FPS, but at 300 yards it shot .618 MOA for a five shot group. Bullet was 2.946” base to ogive. If you have an arbor press you can seat them long and then adjust the depth at the range. Even going in .006” increments to save ammo, then when you find a decent group size you shoot a group on either side of that group. Example, you shoot a 1/2 MOA group at 100 with your bullet seated at .015” off. Test a group at .012” off and .018” off. You will find a seating depth node. Typically .006”wide. By this I mean you will have a window of .006” that won’t impact group size as your throat erodes. I have heard monos are a little more sensitive to this window, but I just don’t know. My 300 grain OTM’s have a .006” window that will shoot bugholes at 100 yards and hold 1/2” MOA out to 1000 if I do my part. This also allows you some wiggle room without having to sort bullets. These were three shot groups at 100 yards with those 300 OTM Bergers. [ATTACH type="full" alt="IMG_4758.jpeg"]474172[/ATTACH] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
338 Norma Reloading Data
Top