TMR- I didn't consider how fast the barrel would heat up on a 264. That is definatley a reason to go with the 260.
Gunsandlabs - You are correct, I do need two rifles! I am leaning towards building the 264 win from a donor shoot-out 7 mag some time down the road.
So far I have heard some good pluses and minuses for both calibers. I'm suprised to see the 264 is still considered a bbl burner. I agree that it would make a great LR antelope gun, but I've got that covered with the 280 rem. As nice as the extra speed would be it's not a deal maker, I prefer accuracy over speed. One OP hit it on the money, the dif in speed is really only a few extra clicks at LR. Don't get me wrong, the 264 still seems pretty cool to me...but it sounds like I would not be missing much if I went with the 260. I wanted to make sure the 264 wasn't one of the great overlooked calibers, like the 280 rem.
So if I understand correctly, both calibers are equally accurate...if you plan on doing more hunting go 264, if you are doing more target go 260?
I just had my first custom rifle built..WHAOO!! I was going to do 264win mag but my gunsmith talked me into a 6.5/270. He builds alot of these for benchrest shooters here in WA state. Performs very close to if not equal to the 264. I am brand new to reloading and found it to be a very easy cartridge to load and was very surprised when my first loads printed 1/4 inch groups at one hundred yards with 49.5 grains of vhituvari 165. Now that I know where to seat these Barnes 130gr TSX's , I can start working up from there to find my hunting loads. I was told that 51grs of RL22 should give you about 3050fps with 140gr hornady's. Might be another option if you load your own.
If you are looking for a round that will not only hit out past a 1000 and then shoot flat to 500 the 264 is a very good choice. With a 300 yard zero, you can set the horizontal cross hair on a deer's back at 500 and he's going down.
Using RL25, Magnum and 7828 SSC I loaded 130 Swift S2's to 3,350 They have a .571 BC.
140's to 3,250
120's to 3,450
The 264 is a race horse. Don't fast fire it, keep the throat clean and you'll get a couple of thousand rounds down the bore with accuracy.
120 BT's out of a 264 will shoot flatter than 140 BT's out of a 7mm STW.
You guys are killing me! By my count it's four for the 260 to three for the 264. I figued it would be a runaway contest. Here's what I've learned so far...
Less kick, less powder, heats up slower, better choice for tactical comp but doesn't have the hunting range.
Great choice for LR hunting, flatter trajectory than 7stw out to 5 hundred yards, heats up fast, loud and greater recoil, still a bbl burner.
Sounds like Ineed to ddetermine if this is more a hunting rig or a LR tactical rig. I will hunt with it, and Iwillshoot non-competetive tactical with it so that doesn't help.
2 more questions: Which one has a greater "fun" factor? With the same bullet and similiar powders, how much shorter is the effective hunting distance of the 260 vs the 264?
Assuming the 130g Accubond and H4831sc, and a minimum kill velocity of 1600 fps and energy of 100o, both calibers should be effective out to 600yrds (260 1896 fps/1038lbs and 264 2097fps/1269lbs). At 600yds tyhe 364 has an impressive 210 more fps and 131 more lbs energy. I picked 600 yds because that is the max distance I paln to shoot at.
What's really impressive is that the 264 will go out to almost 800 yds before it no loner meets the minimum!
From what Im seeing on Quick load is that if you can push a 140 berger at 3200 (65000 psi with H1000, VV N570 can do 3250fps within saami spec) that with the velocity and energy numbers you posted the 264win is good out to 1000 with 1800fps and 1020ft-lbs out of a 26" tube.
The 260 on the other hand with the same bullet and barrel and N560 should be able to get about 2950 will get you to 800 with about 1850fps and 1050ft-lbs.
So if you are only planning on shooting to 600yrds dont waste the extra powder and barrel life. (46.8 grns of powder in the 260 compared to 73.1 grns in the .264win) Dont get me wrong the 264 win is a great round and has its places but for what your talking about doing for me personally i dont think it would be worth it.
Trinidad State Junior College
Thanks PFC! I only plan on shooting to 600yrds, but it's nice to know Ican go out to 800 with the 142. For the 600 to 1000 I've got a 300 wsm that will handle that task nicely. BTW, how do you like quickload, and what did it set you back?
Thanks all for the input. If we missed anything feel free to share.