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
The Frustration Continues!!
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="Lefty7mmstw" data-source="post: 672038" data-attributes="member: 48043"><p>What I'm getting at is you are stressing your rifle; why would it shoot well. I often don't shoot max. powder charge for a rifle, as it usually screws up accuracy even if it helps uniformity. </p><p>An hour ago I was loading some 270's that go about 2700 fps with a 130. They shoot great, but that bullet is flakey if I take it to 3000 fps. I usually am off the rifling at least .020" also. Setting on the lands or worse into the lands, will raise your pressure a bunch. It's effect is equal to at least a grain or two in powder charge added. </p><p>I think you are wasting a bit of time at .1 grain differences in powder and should stay to 1/2 grain. I don't even bother with .1 grain in my 5.56 nato. </p><p>You are about 100 fps slow according to Hodgdon, and that's about normal for a lot of sporters. I don't get over 3K on many 270 loads even if they speck at 3100 fps with 130's. </p><p>Why don't you try hybrid 100v or I 4350, as they show lower charge weight and higher velocity. The faster burning powder will drop your muzzle pressure, which likes to kick the rear of the bullet out and instigate yaw. Yaw won't be very apparent at 100, but will blow your group as you get out a ways.</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 672038, member: 48043"] What I'm getting at is you are stressing your rifle; why would it shoot well. I often don't shoot max. powder charge for a rifle, as it usually screws up accuracy even if it helps uniformity. An hour ago I was loading some 270's that go about 2700 fps with a 130. They shoot great, but that bullet is flakey if I take it to 3000 fps. I usually am off the rifling at least .020" also. Setting on the lands or worse into the lands, will raise your pressure a bunch. It's effect is equal to at least a grain or two in powder charge added. I think you are wasting a bit of time at .1 grain differences in powder and should stay to 1/2 grain. I don't even bother with .1 grain in my 5.56 nato. You are about 100 fps slow according to Hodgdon, and that's about normal for a lot of sporters. I don't get over 3K on many 270 loads even if they speck at 3100 fps with 130's. Why don't you try hybrid 100v or I 4350, as they show lower charge weight and higher velocity. The faster burning powder will drop your muzzle pressure, which likes to kick the rear of the bullet out and instigate yaw. Yaw won't be very apparent at 100, but will blow your group as you get out a ways. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
The Frustration Continues!!
Top