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Re: Searching real world BC of the 139gr. Lapua Scenar
.565 should be pretty close.
.565 should be pretty close.
Re: Searching real world BC of the 139gr. Lapua Scenar
The G1 BC is .557 and the G7 BC is .285. The G7 will be closer to actual trajectory and drift.
Hope this helps.
The G1 BC is .557 and the G7 BC is .285. The G7 will be closer to actual trajectory and drift.
Hope this helps.
Re: Searching real world BC of the 139gr. Lapua Scenar
Actually, the BC for a 6.5mm 123 grain Lapua Scenar is right around .510, so that .615 BC for a 139 grain Scenar doesn't actually seem to be too far fetched.
Actually, the BC for a 6.5mm 123 grain Lapua Scenar is right around .510, so that .615 BC for a 139 grain Scenar doesn't actually seem to be too far fetched.
Re: Searching real world BC of the 139gr. Lapua Scenar
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: xring</div><div class="ubbcode-body">The G1 BC is .557 and the G7 BC is .285. The G7 will be closer to actual trajectory and drift.
Hope this helps. </div></div>
these are the measured numbers from Bryan Litz
i have found his numbers to be accurate
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: xring</div><div class="ubbcode-body">The G1 BC is .557 and the G7 BC is .285. The G7 will be closer to actual trajectory and drift.
Hope this helps. </div></div>
these are the measured numbers from Bryan Litz
i have found his numbers to be accurate
Re: Searching real world BC of the 139gr. Lapua Scenar
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: shootone</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: xring</div><div class="ubbcode-body">The G1 BC is .557 and the G7 BC is .285. The G7 will be closer to actual trajectory and drift.
Hope this helps. </div></div>
these are the measured numbers from Bryan Litz
i have found his numbers to be accurate</div></div>
They were Close or a lil Under this for me... Depressing considering what Lapua Claims. The `140 A-Max are higher BC and fly better for me.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: shootone</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: xring</div><div class="ubbcode-body">The G1 BC is .557 and the G7 BC is .285. The G7 will be closer to actual trajectory and drift.
Hope this helps. </div></div>
these are the measured numbers from Bryan Litz
i have found his numbers to be accurate</div></div>
They were Close or a lil Under this for me... Depressing considering what Lapua Claims. The `140 A-Max are higher BC and fly better for me.
Re: Searching real world BC of the 139gr. Lapua Scenar
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: xring</div><div class="ubbcode-body">The G1 BC is .557 and the G7 BC is .285. The G7 will be closer to actual trajectory and drift.
Hope this helps. </div></div>
Thanks for the information xring!
Regards
Alaskaman
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: xring</div><div class="ubbcode-body">The G1 BC is .557 and the G7 BC is .285. The G7 will be closer to actual trajectory and drift.
Hope this helps. </div></div>
Thanks for the information xring!
Regards
Alaskaman
Re: Searching real world BC of the 139gr. Lapua Scenar
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: shootone</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: xring</div><div class="ubbcode-body">The G1 BC is .557 and the G7 BC is .285. The G7 will be closer to actual trajectory and drift.
Hope this helps. </div></div>
these are the measured numbers from Bryan Litz
i have found his numbers to be accurate </div></div>
Hi shootone,
do you thing Bryan Litz has measured the Hornady 7mm, 162gr. A-Max too? I want test this bullet in my 7x57 largering Mauser.
Alaskaman
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: shootone</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: xring</div><div class="ubbcode-body">The G1 BC is .557 and the G7 BC is .285. The G7 will be closer to actual trajectory and drift.
Hope this helps. </div></div>
these are the measured numbers from Bryan Litz
i have found his numbers to be accurate </div></div>
Hi shootone,
do you thing Bryan Litz has measured the Hornady 7mm, 162gr. A-Max too? I want test this bullet in my 7x57 largering Mauser.
Alaskaman
Re: Searching real world BC of the 139gr. Lapua Scenar
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">do you thing Bryan Litz has measured the Hornady 7mm, 162gr. A-Max too?</div></div>
Yeah, I thing so. Buy the book.
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">do you thing Bryan Litz has measured the Hornady 7mm, 162gr. A-Max too?</div></div>
Yeah, I thing so. Buy the book.
Re: Searching real world BC of the 139gr. Lapua Scenar
I guess the true question then is does the 139 scenars perform better or worse out on the field, compared to the 142 SMK? Certainly, it's hard to believe that the BC of the 139 scenars is almost approaching that of the 208 AMAX.
I guess the true question then is does the 139 scenars perform better or worse out on the field, compared to the 142 SMK? Certainly, it's hard to believe that the BC of the 139 scenars is almost approaching that of the 208 AMAX.
Re: Searching real world BC of the 139gr. Lapua Scenar
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: DesertHK</div><div class="ubbcode-body">I guess the true question then is does the 139 scenars perform better or worse out on the field, compared to the 142 SMK? Certainly, it's hard to believe that the BC of the 139 scenars is almost approaching that of the 208 AMAX. </div></div>
It's not approaching the 208 Amax. In fact, the Amax is substantially higher.
As far as the 139's performing better or worse than the 142's, I think the difference is small. Depends what the gun likes, obviously. I run the 139's @ 2865fps and have a good load for the 142's @ 2800fps. I could go higher with both, maybe, but hammering the brass isn't worth it. The difference at 1000yds is negligible. 139's a tenth flatter or so, 142's a tenth less drift.
That aside, the 139's do group better overall, so I stick with them.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: DesertHK</div><div class="ubbcode-body">I guess the true question then is does the 139 scenars perform better or worse out on the field, compared to the 142 SMK? Certainly, it's hard to believe that the BC of the 139 scenars is almost approaching that of the 208 AMAX. </div></div>
It's not approaching the 208 Amax. In fact, the Amax is substantially higher.
As far as the 139's performing better or worse than the 142's, I think the difference is small. Depends what the gun likes, obviously. I run the 139's @ 2865fps and have a good load for the 142's @ 2800fps. I could go higher with both, maybe, but hammering the brass isn't worth it. The difference at 1000yds is negligible. 139's a tenth flatter or so, 142's a tenth less drift.
That aside, the 139's do group better overall, so I stick with them.
Re: Searching real world BC of the 139gr. Lapua Scenar
Ok. Well I kinda see your point. Bottom line is your gun may like one of them over the other. It's that simple. Depending on where you shop, you may find one or the other for $.02 less per bullet than the other. Dunno about you, but that isn't a whole lot considering the lack of ballistic advantage one may have over the other in the sane 6.5 calibers (260, 6.5x47L, 6.5CM, etc).
Now, if you are launching these out of a 6.5-284 or some other waste of barrel caliber then maybe the 142's might have a slight advantage. Doubt any of us will notice it though.
Ok. Well I kinda see your point. Bottom line is your gun may like one of them over the other. It's that simple. Depending on where you shop, you may find one or the other for $.02 less per bullet than the other. Dunno about you, but that isn't a whole lot considering the lack of ballistic advantage one may have over the other in the sane 6.5 calibers (260, 6.5x47L, 6.5CM, etc).
Now, if you are launching these out of a 6.5-284 or some other waste of barrel caliber then maybe the 142's might have a slight advantage. Doubt any of us will notice it though.
Re: Searching real world BC of the 139gr. Lapua Scenar
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 427Cobra</div><div class="ubbcode-body">Buy his book and find out, or use Lindys instructions to create DA cards using JBM, always select Litz in the bullet selections </div></div>
Hi,
thanks for the information. This book was unknown to me. I place a order!
Alaskaman
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 427Cobra</div><div class="ubbcode-body">Buy his book and find out, or use Lindys instructions to create DA cards using JBM, always select Litz in the bullet selections </div></div>
Hi,
thanks for the information. This book was unknown to me. I place a order!
Alaskaman
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