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
Need advice on testing during load development
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="Jesse09" data-source="post: 1108678" data-attributes="member: 88547"><p>Thank you, acloco and Greyfox, for your thoughtful replies. I could have done a more thorough job of explaining both my situation and development plan.</p><p></p><p>This is my second 270 WSM, the first being a Tikka T3. Jered Joplin said he "couldn't believe" how badly shot-out that barrel was when he bore scoped it. It had a total of 586 rounds through it, and they were almost all with the Nosler 130 grain ballistic tip at 3100 fps. I had always allowed the barrel to cool between shots in recognition of the relatively short life I expected from this caliber. So, Greyfox, that's why I'm trying to do better this time around.</p><p></p><p>Acloco, I should have reported that "I think I've finished phase one of my load development". I now have enough seasoned brass to begin the next step: I'll first shoot from a clean, cold barrel at 100 yards, both to test whether or not this barrel requires foulers, and to set a tentative POI. My next groups will be at 300 yards. If all goes well, I'll work my way back through 250, 200 and 150 yards, trying to match the predictions of my ballistics software and to learn when the barrel needs cleaning. If the 300 yard testing is disappointing, it's back to the drawing board.</p><p></p><p>I am trying out the Barnes all-copper 110 gn TTSX after reading a lot of rave reviews that comment favorably on its being easy in establishing a load and showing great terminal performance at maximum muzzle velocity. (I also have a lifetime supply of IMR 4350.) I'm aware that it doesn't have a high B.C., but pretty much all of my shots will be taken between 200-325 yards on whitetail deer.</p><p></p><p>I've noticed, BTW, that the TTSX does not leave very much copper residue in the barrel. This is in line with the claim from Barnes, but may also be a tribute to Jered's barrel preparation.</p><p></p><p>It's all a learning experience, including the hard-to-believe .040" off the lands. Barnes tech support had advised me to start at .050" and work forward and back between .030" and .070".</p></blockquote><p></p>
[QUOTE="Jesse09, post: 1108678, member: 88547"] Thank you, acloco and Greyfox, for your thoughtful replies. I could have done a more thorough job of explaining both my situation and development plan. This is my second 270 WSM, the first being a Tikka T3. Jered Joplin said he "couldn't believe" how badly shot-out that barrel was when he bore scoped it. It had a total of 586 rounds through it, and they were almost all with the Nosler 130 grain ballistic tip at 3100 fps. I had always allowed the barrel to cool between shots in recognition of the relatively short life I expected from this caliber. So, Greyfox, that's why I'm trying to do better this time around. Acloco, I should have reported that "I think I've finished phase one of my load development". I now have enough seasoned brass to begin the next step: I'll first shoot from a clean, cold barrel at 100 yards, both to test whether or not this barrel requires foulers, and to set a tentative POI. My next groups will be at 300 yards. If all goes well, I'll work my way back through 250, 200 and 150 yards, trying to match the predictions of my ballistics software and to learn when the barrel needs cleaning. If the 300 yard testing is disappointing, it's back to the drawing board. I am trying out the Barnes all-copper 110 gn TTSX after reading a lot of rave reviews that comment favorably on its being easy in establishing a load and showing great terminal performance at maximum muzzle velocity. (I also have a lifetime supply of IMR 4350.) I'm aware that it doesn't have a high B.C., but pretty much all of my shots will be taken between 200-325 yards on whitetail deer. I've noticed, BTW, that the TTSX does not leave very much copper residue in the barrel. This is in line with the claim from Barnes, but may also be a tribute to Jered's barrel preparation. It's all a learning experience, including the hard-to-believe .040" off the lands. Barnes tech support had advised me to start at .050" and work forward and back between .030" and .070". [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Need advice on testing during load development
Top