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
Hunting
Long Range Hunting & Shooting
Longrange PD cartridge - Part II
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="Darryl Cassel" data-source="post: 7872" data-attributes="member: 34"><p>VH</p><p></p><p>The 6mm 107 gr MK has a .555 BC while the 105 JLK is higher then that.</p><p>The 80 gr barely breaks out of the .4 BC range and that is the difference in downrange flight. </p><p>Even "if" the 80 gr had a .500 BC it would not be a better choice then the 6mm for wind busting characteristics since it (6mm) has a .555 and higher BC rating.</p><p></p><p>Again, if the 80gr 224 bullet was so good, you would see it being used in 1000 yard matches, which you don't. </p><p>It's 6mm, 6.5 and 30 cals doing most of the winning with the 30s and 6.5 doing the best at some ranges and the 6mm and 30 cals at others. </p><p>I'm using the Williamsport and Montana ranges here for the cartridges/bullets used the most and also the records that have been broken.</p><p></p><p>I to have a 22/284 to make a good comparison and no way will the 80 gr 224 bullet do as well as the 105 or 107 gr 6mm bullet using the same length barrels and the same case size such as a 6/284 or the 243 case size. </p><p></p><p>The 80 gr bullet sheds it's velocity very quickly even though it starts out faster. This is because of the higher BC of the 107 and 105 gr 6mm Bullets. </p><p>Clearly a better choice for a longrange P-dog round out to 1000 yards or a bit further.</p><p></p><p>As the bullets diameter and weight increase the BC goes up in every instance as long as the bullets were designed as match type bullets to begin with. Even within the same diameter bullet, the higher weight is normally a higher BC if they are match bullets. A real good example of that is a 168 gr MK 30 cal compared to a 200 gr MK 30 cal. </p><p>A 224 BC is higher then a .17 Cal. a 6mm is higher then the .224, the 6.5 is higher then the 6mm, the 7mm is higher then the 6.5 and so on. </p><p>This is true in most every bullet made. </p><p></p><p>The true test of any bullet is actual fire and I have done it. </p><p>There will be less drop to get from point A to point B (1000 and 1100 yards) using the 6mm 105 and 107 gr bullets then my 80 gr 22/284 which does come out of the end of my barrel faster to start with then the 6mm.</p><p></p><p>For that original poster concerning this topic, lets look at throat erosion to. Running an 80 gr bullet in a smaller diameter barrel at 3500 to 3600FPS will create much more wear then the 243 or 6/284 will using a higher BC bullet and going a bit slower.</p><p></p><p>I like my barrels to last a bit longer.</p><p> </p><p>Later</p><p>DC</p><p>As an add on here---The 6/284 is moving that 105 and 107 gr MUCH faster then 3000 FPS.</p><p>The 243 in a good 8 twist 30" long barrel is also.</p><p>Comparing energy levels--Hands down, goes in favor of the 105 or 107 gr 6mm bullets.</p><p></p><p>[ 11-06-2003: Message edited by: Darryl Cassel ]</p></blockquote><p></p>
[QUOTE="Darryl Cassel, post: 7872, member: 34"] VH The 6mm 107 gr MK has a .555 BC while the 105 JLK is higher then that. The 80 gr barely breaks out of the .4 BC range and that is the difference in downrange flight. Even "if" the 80 gr had a .500 BC it would not be a better choice then the 6mm for wind busting characteristics since it (6mm) has a .555 and higher BC rating. Again, if the 80gr 224 bullet was so good, you would see it being used in 1000 yard matches, which you don't. It's 6mm, 6.5 and 30 cals doing most of the winning with the 30s and 6.5 doing the best at some ranges and the 6mm and 30 cals at others. I'm using the Williamsport and Montana ranges here for the cartridges/bullets used the most and also the records that have been broken. I to have a 22/284 to make a good comparison and no way will the 80 gr 224 bullet do as well as the 105 or 107 gr 6mm bullet using the same length barrels and the same case size such as a 6/284 or the 243 case size. The 80 gr bullet sheds it's velocity very quickly even though it starts out faster. This is because of the higher BC of the 107 and 105 gr 6mm Bullets. Clearly a better choice for a longrange P-dog round out to 1000 yards or a bit further. As the bullets diameter and weight increase the BC goes up in every instance as long as the bullets were designed as match type bullets to begin with. Even within the same diameter bullet, the higher weight is normally a higher BC if they are match bullets. A real good example of that is a 168 gr MK 30 cal compared to a 200 gr MK 30 cal. A 224 BC is higher then a .17 Cal. a 6mm is higher then the .224, the 6.5 is higher then the 6mm, the 7mm is higher then the 6.5 and so on. This is true in most every bullet made. The true test of any bullet is actual fire and I have done it. There will be less drop to get from point A to point B (1000 and 1100 yards) using the 6mm 105 and 107 gr bullets then my 80 gr 22/284 which does come out of the end of my barrel faster to start with then the 6mm. For that original poster concerning this topic, lets look at throat erosion to. Running an 80 gr bullet in a smaller diameter barrel at 3500 to 3600FPS will create much more wear then the 243 or 6/284 will using a higher BC bullet and going a bit slower. I like my barrels to last a bit longer. Later DC As an add on here---The 6/284 is moving that 105 and 107 gr MUCH faster then 3000 FPS. The 243 in a good 8 twist 30" long barrel is also. Comparing energy levels--Hands down, goes in favor of the 105 or 107 gr 6mm bullets. [ 11-06-2003: Message edited by: Darryl Cassel ] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
Longrange PD cartridge - Part II
Top