+- 6.5 Grendel Forum (https://65grendel.com)
+-- Forum: 6.5 GRENDEL DISCUSSION FORUMS (https://65grendel.com/forumdisplay.php?fid=3)
+--- Forum: 6.5 Grendel Bolt Actions & Single Shots (https://65grendel.com/forumdisplay.php?fid=17)
+--- Thread: Which chamber for a custom bolt gun? (/showthread.php?tid=139)
Which chamber for a custom bolt gun? - bwaites - 08-24-2011
Warped advice is good. If I was going to ONLY use 123 grain bullets, I would probably even go 1:8 for a 24 or 28 inch barrel.
Which chamber for a custom bolt gun? - hawkinpup - 08-24-2011
I don't think I'm going to shoot anything lighter than the 123's but if I step up a bit you think a 1;9 would turn better on a heavier bullet?
Which chamber for a custom bolt gun? - bwaites - 08-25-2011
Heavier bullets generally like faster twists, so 1:8 would be better than 1:9 for 129/130 grain bullets.
Which chamber for a custom bolt gun? - hawkinpup - 08-25-2011
Thanks B dub
Which chamber for a custom bolt gun? - hawkinpup - 08-26-2011
So what do you think on rifling 3 grove 4 grove or polygonal?
Which chamber for a custom bolt gun? - bwaites - 08-26-2011
Good question, hopefully someone with more experience than me will answer that. I have only shot one polygonal rifle, and didn't shoot that one for accuracy, just function.
3,4, and 5R proponents are all almost fanatical in their beliefs.
Which chamber for a custom bolt gun? - warped - 08-26-2011
hawkinpup Wrote:So what do you think on rifling 3 grove 4 grove or polygonal?
The 5R has not failed me, heck even my 14.5" Saber does really well.
I really do not like less than 4 grooves, this is based on my experiences over the last 45 years.
Yeah I really did start shooting at 4-5yrs old.
By 12yrs old I was shooting 7mm Mauser and a .308win Browning.
Some kids liked to do other things, I spent my change on ammo.
Which chamber for a custom bolt gun? - glane5910 - 08-27-2011
Why not just go with a 6.5-284 for that bolt gun?
Which chamber for a custom bolt gun? - bwaites - 08-27-2011
glane5910 Wrote:Why not just go with a 6.5-284 for that bolt gun?
Wow, whole different ball game, barrel life of 1000 rounds vs barrel life of 5000+ rounds.
Which chamber for a custom bolt gun? - hawkinpup - 08-27-2011
bwaites Wrote:Wow, whole different ball game, barrel life of 1000 rounds vs barrel life of 5000+ rounds.
this is one reason
Which chamber for a custom bolt gun? - hawkinpup - 08-27-2011
The other is it's the same cal as my AR. I didn't want to have to buy more reloading gear.
Any experience from anyone that accuracy suffers from polygonal ?
Which chamber for a custom bolt gun? - glane5910 - 08-27-2011
I guess I caught this thread at the end. Certainly huge difference in bbl life. I assumed the OP was after more performance ballistically going with the bolt gun. Now if it were going to be just a hunting rifle, I don't think I've ever put close to 1K rounds down any of mine.
Which chamber for a custom bolt gun? - hawkinpup - 08-27-2011
No basicly just trying to find out if anyone knows if a polygonal type barrel is less accurate than a standard rifling.
Which chamber for a custom bolt gun? - glane5910 - 08-27-2011
I'm guessing that would depend on the quality of the bbl to begin with. I don't think I've had a rifle with polygonal rifling but with handguns, I've seen no difference.
Which chamber for a custom bolt gun? - glane5910 - 08-27-2011
I had forgotten about an H&K 22mag rifle I had years ago. IIRC, it had polygonal rifling and it was a tack driver.
Which chamber for a custom bolt gun? - wch - 09-01-2011
Try Pac-Nor for Grendel barrel, they offer very good customer service and will explain chamber and twist rate if you ask.
Which chamber for a custom bolt gun? - adamjp - 11-03-2011
Did Alexander Arms ever come back with a post on chambers? Perhaps in another thread?
Which chamber for a custom bolt gun? - Hooz - 11-04-2011
Nope. No reply.
From all of my searching on the 'net, I've kind of determined that the 264-LBC chamber would probably be the best (most accurate) in a bolt gun, especially shooting the 120-123gr bullets like I plan on doing.
The project is currently under way, so I'll post more as it progresses.
Which chamber for a custom bolt gun? - adamjp - 11-04-2011
In my discussion with PTG they suggested the 6.5 BPC (Brindell Palisimo Cartridge) as a Grendel case with an optimised throat for bolt action accuracy.
I bought a BPC reamer.
Which chamber for a custom bolt gun? - hawkinpup - 11-19-2011
another couple weeks for my barrel from Pac-Nor, everything else is ready to go. I'll keep you posted.