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
Rifles, Bullets, Barrels & Ballistics
Winchester bore and cast bullets leading
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="Tac-O" data-source="post: 2193034" data-attributes="member: 109994"><p>Well, everything I've read in books and from other lead shooters is very contrary to under 25bhn being limited to 1200fps. </p><p></p><p>Bore groove to groove at muzzle is 0.4565-0.457. Pushing a slug all the way through the bore from chamber yields the same measurements. I did this with a soft-ish lead bullet that was 0.460, probably around 9-12 bhn.</p><p></p><p>All my brass was virign Jameson 45-90 brass, FL sized without expander than expanded with Lyman M, which measures 0.456 and flares mouth to 0.460. I use the Lee factory crimp die at medium crimp.</p><p></p><p>I was using MBC buffalo#1, which is supposedly about 18bhn, 0.459, lubed with modified emmerts, with a duplex of 7gr 4227 and 65gr 2f OE. About an inch accuracy at 50 yards. 20 rounds shot. Leading mostly in last 3-4" of muzzle, but not a ton. A bit in other spots, but very minor. Single cereal box was 0.025" thick, compressed ballpark 0.25". </p><p></p><p>The tested some Lyman 457193 that a forum member sent me. 0.460, spg lubed. Probably 9-12 bhn. Same load as above, 20 rounds, 4-6" accuracy at 50yds, leading spread throughout whole length, a lot but not a ton. </p><p></p><p>Then took the Lyman bullet and changed the load to 4gr 4227 and 68gr 2f, used a single 0.025" hdpe milk jug wad, compressed ballpark 0.25". About 1.5-2" accuracy at 50yds. Leading throughout barrel, maybe a little less than previous Lyman bullet load but probably very similar.</p></blockquote><p></p>
[QUOTE="Tac-O, post: 2193034, member: 109994"] Well, everything I've read in books and from other lead shooters is very contrary to under 25bhn being limited to 1200fps. Bore groove to groove at muzzle is 0.4565-0.457. Pushing a slug all the way through the bore from chamber yields the same measurements. I did this with a soft-ish lead bullet that was 0.460, probably around 9-12 bhn. All my brass was virign Jameson 45-90 brass, FL sized without expander than expanded with Lyman M, which measures 0.456 and flares mouth to 0.460. I use the Lee factory crimp die at medium crimp. I was using MBC buffalo#1, which is supposedly about 18bhn, 0.459, lubed with modified emmerts, with a duplex of 7gr 4227 and 65gr 2f OE. About an inch accuracy at 50 yards. 20 rounds shot. Leading mostly in last 3-4" of muzzle, but not a ton. A bit in other spots, but very minor. Single cereal box was 0.025" thick, compressed ballpark 0.25". The tested some Lyman 457193 that a forum member sent me. 0.460, spg lubed. Probably 9-12 bhn. Same load as above, 20 rounds, 4-6" accuracy at 50yds, leading spread throughout whole length, a lot but not a ton. Then took the Lyman bullet and changed the load to 4gr 4227 and 68gr 2f, used a single 0.025" hdpe milk jug wad, compressed ballpark 0.25". About 1.5-2" accuracy at 50yds. Leading throughout barrel, maybe a little less than previous Lyman bullet load but probably very similar. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Winchester bore and cast bullets leading
Top