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
BC of the Sierra .277 175gr TGK?
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="TRexF16" data-source="post: 2464934" data-attributes="member: 108912"><p>Revisiting this issue since the release of the new Nosler 170 grain .277 BT. Its published G1 BC is .560, exactly the same as the published BC of the 175 Sierra TGK.</p><p>I know it's not scientific, but looking at the 170 BT, a .560 G1 looks about right to me. Just as, looking at the 175 TGK, a .560 G1 looks like a VERY conservative number. Now that I have them both in hand I feel even stronger about this.</p><p>Look at the pictures fellas - these are the 175 TGK, the 170 BT, and the 165 ABLR. Does anyone think the BC on the TGK and the BT should be the same? BT has a smaller boattail and a blunter ogive (at least to my eye), and of course much shorter OAL.</p><p></p><p>Is it possible these have the same BC? (I know the answer is to test it myself with drops but I have not yet had that opportunity. My regular range only goes to 200 yards.) </p><p></p><p>BTW, the TGKs are shooting about 0.5 MOA in my 8" 270 WSM and pressures are quite low at 2850 FPS (65/Magpro, GM215M, 3.00 COAL). </p><p></p><p>Cheers,</p><p>Rex</p></blockquote><p></p>
[QUOTE="TRexF16, post: 2464934, member: 108912"] Revisiting this issue since the release of the new Nosler 170 grain .277 BT. Its published G1 BC is .560, exactly the same as the published BC of the 175 Sierra TGK. I know it's not scientific, but looking at the 170 BT, a .560 G1 looks about right to me. Just as, looking at the 175 TGK, a .560 G1 looks like a VERY conservative number. Now that I have them both in hand I feel even stronger about this. Look at the pictures fellas - these are the 175 TGK, the 170 BT, and the 165 ABLR. Does anyone think the BC on the TGK and the BT should be the same? BT has a smaller boattail and a blunter ogive (at least to my eye), and of course much shorter OAL. Is it possible these have the same BC? (I know the answer is to test it myself with drops but I have not yet had that opportunity. My regular range only goes to 200 yards.) BTW, the TGKs are shooting about 0.5 MOA in my 8" 270 WSM and pressures are quite low at 2850 FPS (65/Magpro, GM215M, 3.00 COAL). Cheers, Rex [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
BC of the Sierra .277 175gr TGK?
Top