Took out my (like new) 1965 Remington 700 today.
24" S/S barrel. Bedded and floated.

Brass New W-W neck sized
Primer WLRM
Projectile Hornady 129 SST
Length 3.265" Projectile seated to the cannelure which was also 'just off the lands'.
No signs of pressure.

63 grains 2225 Group 1.600" 2,837 fps
64 grains 2225 0.895"
64 grains 2225 (again) 1.000" 2,881 fps
65 grains 2225 2.125"

The 64 grain load appears consistent and would suit my purposes out to 500 yards which is as far as I hope I ever have to shoot something. 26" barrels are supposed to get these well up to 3,200 fps. I'll be trying 120 and 140 grain projectiles in the future.



... to be continued.

64 grs of ???

ramrod340: Since he is in OZ, my guess that it is AR 2225 that they(AR) list as the equivalant of Hodgdon Retundo. If you look at AR site and the Hodgcon site for data the same load will have the same fps and pressure. This will tell you who's what. http://www.hodgdon.com/msds.html

FA thanks for the link. If that is Retumbo then the load is really on the light side.

I've just started load development. I'll be increasing the load to see what happens. Hopefully the groups will close back up.

I've been told AR 2213sc is a better powder. Any thoughts ?

quote:

I've been told AR 2213sc is a better powder. Any thoughts ?

I've used 2213(h4831) in loading 264wmags for both 120 & 140s. I never loaded 129s. I happened to like IMR7828 and MRP or lets say the rifle I loaded for did.

Looking at QL for your set up says AR2225(retumbo) will take you to close to the velocity top. However you will be in the 73+gr range and 105+% capacity. To me 5% is not big deal. For info QL calls 64grs of retumbo as 2764fps. 73grs is 3164fps, 105% capacity and 64,000psi.

If you don't want to compress then something like your 2213 gives higher velocity than retumbo. With a 100% limit 2213, 2214 mrp, mrp2 and 7828 will put you at a calculated 3100FPS.

V N560 & N570 CALCULATE the top velocity with no compression. Allowing compression AR2218 and N570 give max velocity close to 3200fps.

These are all SIMPLE QL CALCULATIONS not real world data.

Thx Ramrod340. Great info mate

Day Two: I seated the projectiles deeper. 0.043"/1.09mm deeper and fired off the same three groups over the Chrono. I also used a padded front rest rather than a Bipod prone from the ground.

67 2213sc group 0.420" 3,032 fps Perfect little triangle
68 2213sc group 0.765" 3,156 vertical string
69 Lot more noise and recoil now 2.015" 3,242fps large triangle
Approx 95% full.

The factory 24" S/S barrel is definantly accurate. When my Pac-Nor 26" Super Match Grade barrel turns up, velocities will jump and with 140's the big boiler room will get to really stretch it's legs. All the popular literature says the .264 needs 26" to work properly which is why I ordered the Pac-Nor. As is, the animals will never know the difference

Ummm, in case anyone cares, Hodgdon shows a maximum for H4831 (2213c) as 62 grains with this bullet. I would not load 67 or 68 grains, but that is just me. With 60 grains, my 264 gets right at 3000 fps, but that is a newer Lilja barrel with a 1:9 twist.

Use US-869 or WC-872 to get 3200 fps with the 140's and much more with the 129.

The powders you are using would be so fast in the .264 that the Expert (Stonecreek) refers to them as "pistol" powders and from my experience I agree.

Code4: You need to jam as much powder into that 264 that it can can hold. That 6 or 7" of difference at 600yrs is important as every one here shoots deer at 600 or 800yrds. Just ask all of those experts on AR. IT IS A KNOWN FACT that a 129Gr 6.5mm bullet at 2900fps will not kill a deer and eveyone that has a 270Win that dose not have a cromo is doing 3100fps with 130's.PS: also, you get 400 to 500 more fps by haveing a 26" barrel over a 22" barrel.

quote:

Originally posted by Fat_Albert:
Code4: You need to jam as much powder into that 264 that it can can hold. That 6 or 7" of difference at 600yrs is important as every one here shoots deer at 600 or 800yrds. Just ask all of those experts on AR. IT IS A KNOWN FACT that a 129Gr 6.5mm bullet at 2900fps will not kill a deer and eveyone that has a 270Win that dose not have a cromo is doing 3100fps with 130's.PS: also, you get 400 to 500 more fps by haveing a 26" barrel over a 22" barrel.

quote:

Originally posted by Fat_Albert:
Code4: You need to jam as much powder into that 264 that it can can hold. That 6 or 7" of difference at 600yrs is important as every one here shoots deer at 600 or 800yrds. Just ask all of those experts on AR. IT IS A KNOWN FACT that a 129Gr 6.5mm bullet at 2900fps will not kill a deer and eveyone that has a 270Win that dose not have a cromo is doing 3100fps with 130's.PS: also, you get 400 to 500 more fps by haveing a 26" barrel over a 22" barrel.

If you want 2900 fps, just get a .260 and save $$$ on powder.

If you want .264 WM velocities, then use SLOW powders.

quote:

Originally posted by rcamuglia:

quote:

Originally posted by Fat_Albert:
Code4: You need to jam as much powder into that 264 that it can can hold. That 6 or 7" of difference at 600yrs is important as every one here shoots deer at 600 or 800yrds. Just ask all of those experts on AR. IT IS A KNOWN FACT that a 129Gr 6.5mm bullet at 2900fps will not kill a deer and eveyone that has a 270Win that dose not have a cromo is doing 3100fps with 130's.PS: also, you get 400 to 500 more fps by haveing a 26" barrel over a 22" barrel.

If you want 2900 fps, just get a .260 and save $$$ on powder.

If you want .264 WM velocities, then use SLOW powders.

I think Fat_Albert is doing some big time chain jerking!

Yep, I know.

But it seems he thinks 2900 is acceptable for the 129 in the .264!

I got 3300 with accuracy with the SST!

quote:

Originally posted by rcamuglia:
Yep, I know.

But it seems he thinks 2900 is acceptable for the 129 in the .264!

I got 3300 with accuracy with the SST!

I've read enough of Fat_Albert's posts to believe he's just having fun here.

Almost everyone with a .264 understands the need for very slow powders....Fat_Albert knows it too.

Well after a few more groups, 68 grains proved the most consistantly accurate. So 3,156 fps from the 24" barrel with 129SST's is it. Load density is quite high, around 90-95 % guestimate.

I have ordered a 26" Pac Nor super match grade barrel to fit once this one wears out.

Maybe you blokes getting 3,300 fps with 140's can tell me which brand of chronograph your using as I'm sure that will help my velocitys.

Never have hit 3300 with a 140! 3200 and tad higher with WC-872!

Well to continue....

66 grains of AR2213sc under the 140 Woodleigh PPSN got me 3,016 fps without pressure signs and easy extraction.

I'm off after Camels in June in the Simpson Desert so we will see just how hard they hit.

I love those 129gr SST's. They're pure hell on whitetails and group amazingly well out of my .264WM. I use Ramshot Magnum to push mine. My numbers aren't as high as some posted here but the rifle really likes the load.

Terry

You guys shoot camels down under? What do you do with them...just leave them lie?