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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
LONGRANGE 6.5-284
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<blockquote data-quote="Darryl Cassel" data-source="post: 21269" data-attributes="member: 34"><p>Hello Seal, Steve and Prime.</p><p></p><p>Seal, good choice.</p><p></p><p>Steve, As per the added length of the 30" barrel, my shooting friends and I have found that, the difference of 4 more inches will give at LEAST 100 FPS in almost any caliber.</p><p>100 FPS additional velocity works out to at least a 21" (using the 6.5 bullet, 155 gr, at 2900 and 3000 fps) flatter shooting gun at 1000 yards. </p><p>I know that John Hoover (shoots nothing but 6.5/284) who is an excellent shooter at Williamsport, maintains 2950 to 3050 FPS with 30" barrels and 140 to 142 gr bullets on all 4 guns that his family uses at the club matches.</p><p>30" barrels are a bit long to most hunters/shooters who have been used to 22 to 26" most of their life. </p><p>Point is, it's worth the added length for longrange shooting if a velocity gain can be made and 100 fps is certainly worth that additional 4" of barrel steel.</p><p> </p><p>Prime, As per the BC of the 6.5 bullet, I can only come up with a .615 for the 155 Gr Sierra MK and .585 for the Sierra 142 MK.</p><p>If JLK is advertising the 142 at higher then that (.655), I will have to adjust my records as per his listing. </p><p>Please double check that listing, if it's true, I will shoot some of those bullets in my 6.5s AGAIN.</p><p></p><p>Later</p><p>Darryl Cassel</p><p></p><p>[ 11-25-2001: Message edited by: Darryl Cassel ]</p></blockquote><p></p>
[QUOTE="Darryl Cassel, post: 21269, member: 34"] Hello Seal, Steve and Prime. Seal, good choice. Steve, As per the added length of the 30" barrel, my shooting friends and I have found that, the difference of 4 more inches will give at LEAST 100 FPS in almost any caliber. 100 FPS additional velocity works out to at least a 21" (using the 6.5 bullet, 155 gr, at 2900 and 3000 fps) flatter shooting gun at 1000 yards. I know that John Hoover (shoots nothing but 6.5/284) who is an excellent shooter at Williamsport, maintains 2950 to 3050 FPS with 30" barrels and 140 to 142 gr bullets on all 4 guns that his family uses at the club matches. 30" barrels are a bit long to most hunters/shooters who have been used to 22 to 26" most of their life. Point is, it's worth the added length for longrange shooting if a velocity gain can be made and 100 fps is certainly worth that additional 4" of barrel steel. Prime, As per the BC of the 6.5 bullet, I can only come up with a .615 for the 155 Gr Sierra MK and .585 for the Sierra 142 MK. If JLK is advertising the 142 at higher then that (.655), I will have to adjust my records as per his listing. Please double check that listing, if it's true, I will shoot some of those bullets in my 6.5s AGAIN. Later Darryl Cassel [ 11-25-2001: Message edited by: Darryl Cassel ] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
LONGRANGE 6.5-284
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