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
stick bolt 7mm 338 lapua imp
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: 678474" data-attributes="member: 48043"><p>You were probably able to hot rod it a bunch because of the bigger springback before the brass was formed. A grain isn't going to change your pressures diddly when you are at 100+ grains. I've been down this road with the 7rum ( 100 grains or so I 5010 with a 175)(also shooting 140's at 3500 fps) and it ended with a shot out barrel in short order. If you are over pressure, cut your charge 10% or 11 grains in this case, and that will net a 20% drop in pressure. Ball powders like wc 872 can be weird at full power loads in smaller bores and are often very erratic at full throttle. </p><p>I'd personally go with a 50bmg stick powder like rl50 or I 5010. They are a lot more stable when pushed a bit in smaller bores. I tried wc872 in my 7stw with 171 barnes, and it had a 150 fps x and I wasn't even at the top yet. Rl 50 and rl25 were dang near perfect with good accuracy. I couldn't try I 5010 because mine went bad a couple of years back. I'm thinking of getting more. I never had wc872 when I had the 7ultra, but aa 8700 wasn't good in it with heavy bullets. </p><p>Wc 872 does work in the 300 ultra with heavy bullets though( a bit more load on the powder).</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 678474, member: 48043"] You were probably able to hot rod it a bunch because of the bigger springback before the brass was formed. A grain isn't going to change your pressures diddly when you are at 100+ grains. I've been down this road with the 7rum ( 100 grains or so I 5010 with a 175)(also shooting 140's at 3500 fps) and it ended with a shot out barrel in short order. If you are over pressure, cut your charge 10% or 11 grains in this case, and that will net a 20% drop in pressure. Ball powders like wc 872 can be weird at full power loads in smaller bores and are often very erratic at full throttle. I'd personally go with a 50bmg stick powder like rl50 or I 5010. They are a lot more stable when pushed a bit in smaller bores. I tried wc872 in my 7stw with 171 barnes, and it had a 150 fps x and I wasn't even at the top yet. Rl 50 and rl25 were dang near perfect with good accuracy. I couldn't try I 5010 because mine went bad a couple of years back. I'm thinking of getting more. I never had wc872 when I had the 7ultra, but aa 8700 wasn't good in it with heavy bullets. Wc 872 does work in the 300 ultra with heavy bullets though( a bit more load on the powder). [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
stick bolt 7mm 338 lapua imp
Top