Home Forums Reloading Big Game Rifles Im new to .264 win mag, your pet loads please!

That's interesting.

I'm shooting the 139 Scenar with 72 grains of RL-33 in a 26" barrel.

Velocity and drops true out at 3400 fps.

3400 fps from 140s in .264 is kind of a red flag.

just sayin'

I am currently using 63 grains retumbo with 140 grain accubonds with a winchester mod 70 26" barrel groups are half inch or less if i do my part at 100 yards. pro chrony says average vel is 3062, but drop test at 500 and 750 put trajectory validation at 3238 ft per sec. this is 1/2 grain below max on hodgens load data but in my rifle it is MAX load.

What could go wrong with a load 200 fps faster then the fastest safe 264 WM loads

I used 63.5 gr Retumbo with 140 gr Partitions for 3070 fps from a 24" barrel. Now that the throat has eroded it is much slower so it's going to get a new barrel in the near future.

toad,



Some barrels are slow and some are fast. This is probably not the first load he's worked up.

Tinstaafl*

I believe that's how they spelled it in the Speer manual

Nosler's max speed with their 26 Nosler is a hair over 3300 fps with 140's.

*Since someone will ask it means "there is no such thing as a free lunch"

I've finally settled on 130 NAB's over Re-33.

You've obviously never used RL-33 in the .264 ....

...or N-570 in the 26 Nosler------142 LR Accubonds at 3600 fps

Ringy, how many .264 WM loads have you worked up?

I've owned .264s since the '70s. current stable consists of four, three on their second barrels and one on it's third.

Krieger barrel



lilja barreled Laredo on the left



lilja barrel top, brux barrel lower.



some of my .264 brass.



my statement that 140s @ 3400 from a .264 Win. is kind of a red flag stands.

I know I don't have to, but I want you to feel better about the extra 150 fps


I have one lot of RL-33. In my last barrel, I was at 77 grains for 3250 fps. In that barrel I never got more than 3250 fps without pressure signs. I was shooting the 140 VLD.

That was what caused me to say that it was interesting that the dude who was loading 75 grains was only getting a bit over 3000.

When I started load development in my new barrel, I started at 72 grains, fired 3 shots up to 73 grains and hit pressure way too early for a test so I started over and lower at 69 grains. At 72.5 I had a faint ejector mark and at 73 as well with a bit of a sticky bolt lift. I realize that the old barrel's throat was worn and this was a new chamber causing the difference.

The entire ladder at 550 yards was a node. I simply picked the highest charge under the pressure signs, loaded 3 and shot them at 100. It grouped .3"

At this point I had no idea of the velocity until I shot it for drop data and used Ballistic AE to true it out.

Whoever said it is a "fast" barrel is right. I'm also shooting the 139 Scenar. The barrel and bullet dimensions might have bearing on the results, but some barrels are slower and some are faster. I thought it was interesting. This happens to be a "fast" and "accurate" barrel...

The last 5 shots of the Audette








[video:youtube] https://www.youtube.com/watch?v=spnHDf0flJ0[/video]

toad,



How many .264's I or you worked on is irrelevant to this conversation. No informed loader will disagree with the idea some barrels are fast and some are slow.

I thought so...

I've been through a pile of .264 barrels and haven't found any magic ones that'll add 150-200 fps. that is a huge step.

I'm not sayin' it isn't possible, but I am sayin' IT IS KIND OF A RED FLAG. no informed reloader will disagree...

toad,



Apparently two do.

you calling yourself 'informed' is amusing...

Have you tried RL-33 in the .264?

Funny thing about loading for the .264 (which I'm sure you know) is that when you decide to have one in the stable, you've just signed up to be your own ballistician. (That is if you plan to get the performance the cartridge is capable of)

The reason you are your own ballistician is that there is very little load data published for the .264...... At least data with newer, modern propellants.

I've yet to see any with RL-33. I've tested a hell of a lot of powders in the .264 and nothing has come close in velocity to RL-33. I would think N-570 would work similarly from seeing what a friend has done with it in the 26 Nosler.

If a guy is loading 7828, US-869, 4831, or even Retumbo in the .264, he's stuck in the Dark Ages...

My pet load is 76gr of Rl-33 under 140 Hybrids @ 3190. That is in a 24" #3 Rock barrel. Zero pressure signs, just stopped cause the load is ridiculously accurate for a 7# gun. Consistent .3-.4's. I'm sure I could go higher just not seen the need. I may see what I can squeeze out of her later but for now gonna run her at where its at.

Roy

I do use RL33 in the .264. IMO, similar to but less bulky than RL50. I could get ~30-40 fps more from it (and RL50) than 7828. that gain put me in the 3220-3250 ballpark.

thing is, your load seems to be a mild load but yields 150+ fps more than what I am getting with quite a bit more RL33.

that is what I would be concerned about. wildly unexpected results might seem like a gift, but still raise the red flags.

do you have access to QL?

I had QL on a computer that died, so not now. I know of no published data for the .264 with RL -33. QL may be a good pretictor but I wouldn't rely on it as Gospel

Statements about using quite a few grains more (up to 5 grains on this thread) than my load of 72 and getting a lot less velocity is what I found interesting. I would think that would go to show that there is such a thing as "fast" barrels. I also think that a guy using 77 grains and achieving less than 3100 would signify that there are "slow barrels" (or a completely worn out throat)

Another possible point where error may exist is in everyone's statement of the velocity they think they are getting.

BTW, that is a chitload of .264 brass. Why do you have so much?

2 5-gallon buckets of brass? I'm guessing 5000 pieces?

i got a deal on it LOL. I do have ~5K, but some of it is in another partial bucket not pictured, and some is loaded ammo.

when I have a new barrel spun on, i work up a load and load 600-1K rounds, just for that rifle, and that rifle will usually get nothing but that load for the life of the barrel. easier for me to keep track of schitt that way.