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Post by vet2260 on Jan 16, 2016 4:43:25 GMT -8
Ok can some one tell me the difference between a 6.5 Creedmore and a .264 LBC and which has a better availability for purchase and reloading?? Reason I am asking is is being able to swap between calibers for hunting ie. 308 and then long distance shooting.. 264 or 6.5 Thanks all   |
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Post by Deleted on Jan 16, 2016 5:56:00 GMT -8
Ok can some one tell me the difference between a 6.5 Creedmore and a .264 LBC and which has a better availability for purchase and reloading?? Reason I am asking is is being able to swap between calibers for hunting ie. 308 and then long distance shooting.. 264 or 6.5 Thanks all The big difference between the two is case length, and case head size. The 264 LBC-Grendel has a .442 case head and is 1.505 long. It has a water capacity of about 36 grains. The parent case for it is the 7.62x39 It's short case length makes it a perfect fit for the AR15 platform. The Creedmoor case has a length of 1.910 and a water capacity of 50.9 grains of water. It's case head measures .473 and it's parent case is the 308. It will not fit in an AR15 magazine. The Creedmoor is at it's best in a bolt action rifle. It will also work in the large frame AR type platforms such as the LAR10 or AR10. |
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Post by ivlianvs on Jan 20, 2016 2:56:28 GMT -8
Both are available as commercial ammo, just look for 6.5Grendel instead of .264LBC. The ammunition is interchangeable. As for reloading, the same applies, just get Grendel brass.
When reloading, the main difference will be that the .264LBC/6.5Grendel with less case capacity uses less powder, resulting in a slight cost savings over the larger capacity Creedmoor case. That's coming from a penny pincher who reloads .45acp with only 3.5 grains of powder while all my shooting buddies are in the range of seven grains. 
Ballistics with adequate barrel length and are close enough from either that most shooters aren't likely to notice much difference. If you start pushing the envelope of distance and bullet weight, a competitive shooter would lean towards the Creedmoor.
When you say that you're looking to swap between a .308 and one of these, I read that as you might have some intent to have the two sharing some common parts? If that's the case (see what I did, there?), then Creedmoor is likely to be what you're looking for. However, this is the bolt action section, so maybe that isn't your intent?
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Post by vet2260 on Jan 23, 2016 5:50:40 GMT -8
That is my intention as I am Building a Savage Axis and was looking at having one platform that I could change barrels and do both Hunting and Long Range shooting with. I had seen something somewhere about a 6.5 and 264 so was wondering about it so did the best thing and asked .. I appreciate all the help and it gives me something else to add to my collection.  By the way what would be the best twist rate for something out past say 800 yds??? |
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Post by GLSHOOTER on Jan 23, 2016 6:22:12 GMT -8
Probably an 8 would be the best choice. Since you are single loading your best stuff you will be able to reach the lands. It also will work fine for any magazine fed endeavors. The 9 wil work but it is a good idea to always order one twist faster for a bit more flexibility.
Greg
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Post by vet2260 on Jan 23, 2016 7:30:13 GMT -8
Thanks again Greg you've been a great help to me and Really appreciate your knowledge and willingness to share it hoping my other barrel gets here soon anxious to get to the range lol.... Also if I understand this a smaller number is a faster spin rate but bullet weight does have a lot to do with range and velocity right my CRS has been kicking in as I have ben having to learn a lot of new things and having to remember a lot of old stuff too.. lol
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Post by devildogandboy on Jan 23, 2016 8:05:15 GMT -8
the 6.5cm will share the same bolt head as the 308 and both can use the same mag without problem. if you went with the 264lbc you will need to change the bolt head(ppc), probably have to shoot it single shot, i don't think any of their mags will work with the 264lbc. i have both calibers and opted for the 8 twist barrels, i have found these to work well with the bullets i prefer to shoot(120-140gr).
just something to think about.
Bruce
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Post by GLSHOOTER on Jan 23, 2016 8:58:40 GMT -8
Thanks again Greg you've been a great help to me and Really appreciate your knowledge and willingness to share it hoping my other barrel gets here soon anxious to get to the range lol.... Also if I understand this a smaller number is a faster spin rate but bullet weight does have a lot to do with range and velocity right my CRS has been kicking in as I have ben having to learn a lot of new things and having to remember a lot of old stuff too.. lol It's not the weight it's the lenght. Small numbers are faster twist for the longer ones. For instance a 17 caliber 25 grain Hornady VMAX won't stabilize consistently in a 1:10 but will with a 1:9. The Hornady 25 grain HP loves the 1:10. Same weight but the plastic tip makes the VMAX just too long. I found this out after I shot battleships with my first 17-223. Greg |
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By the way what would be the best twist rate for something out past say 800 yds??? 
