Wanted! ! Your loads .
- Thread starter Bigwheels
- Start date
Well,
I am a recent owner of a Ruger 77 338win mag. I have so far shot the 225 grain nosler parition with 70.0 grains of IMR4350. My velocity is only 2780fps but am shooting some very nice groups(like some as good as 0.5 inch at 100yds.) I am using winchester cases and Fed215 primers.
I am a recent owner of a Ruger 77 338win mag. I have so far shot the 225 grain nosler parition with 70.0 grains of IMR4350. My velocity is only 2780fps but am shooting some very nice groups(like some as good as 0.5 inch at 100yds.) I am using winchester cases and Fed215 primers.
- Thread starter
- #3
Thanks 340 BOY.Thats about the same velocity as I'm getting.I'm useing Winchester brass,& Winchester WLRM primers.I'm getting 2750fps.With 72.0gr. of H4350.I allso Moly coat my rounds to save my bore.It must be working because I have about 2500-3000 rnds through it so far,& it still shoots clover leafs @ 200 yds.Anyone else?
- Nov 4, 2004
- 25,432
- 9,228
I'm with fredj338, try RL19 and IMR4831. You might also give IMR4350
a try.
JD338
a try.
JD338
- Thread starter
- #6
Bigwheels:
There is a difference in IMR 4831 and H 4831SC in that the Hodgdon version is a slower burning powder. Not a lot, a couple of grains, depending on the cartridge envolved.
I am surprised at the low velocity you are getting with 72 grains of H 4350 behind the 225 AccuBond bullets. I am sure that part of the problem is the fact that you moly coat the bullets. It will reduce friction and you may have to up the powder charge to get back up to the speed you want.
For reference, I have a Remington 700 Classic chambered in .338 Win Mag. The last time I chronographed the 225 AccuBond in it I got 2892 fps when using 71 grains of H 4350 in a Winchester case and fired by a Fed 215M primer. The same afternoon the same load behind a 225 Partition gave 2899 fps. In my particular rifle, the Partitions shot much better groups.
A lot of people report some pretty good velocities in the .338 Win Mag when using RL 22 powder.
There is a difference in IMR 4831 and H 4831SC in that the Hodgdon version is a slower burning powder. Not a lot, a couple of grains, depending on the cartridge envolved.
I am surprised at the low velocity you are getting with 72 grains of H 4350 behind the 225 AccuBond bullets. I am sure that part of the problem is the fact that you moly coat the bullets. It will reduce friction and you may have to up the powder charge to get back up to the speed you want.
For reference, I have a Remington 700 Classic chambered in .338 Win Mag. The last time I chronographed the 225 AccuBond in it I got 2892 fps when using 71 grains of H 4350 in a Winchester case and fired by a Fed 215M primer. The same afternoon the same load behind a 225 Partition gave 2899 fps. In my particular rifle, the Partitions shot much better groups.
A lot of people report some pretty good velocities in the .338 Win Mag when using RL 22 powder.
- Thread starter
- #8
Thanks R Flowers.I was leaning that way too.I'm still going to Moly coat my bullets for the longevity of my barrel.I have just loaded a few up to 73gr. of H4350,& I'll check them when it stops storming around here.If that doesn't work,I'm going to try some H3831SC I have allready.& If that doesn't get me to where I want to go,I'll try some RL22.I would like to stay with Hogdon Extreem powders if I can.Has anyone had any experience with extreem elevation/temp changes with other powders?I live @ sea level,& load in a room @ 70*.I hunt @ 7000',& 10*-60*.I've heard that other powders will have problems with this.Is that true?
Like you, I prefer to stay with the Hodgdon Extreme powders for the most part. Just wanted to mention that there has been a lot of good press for the use of RL 22 in the .338 Win Mag both on the internet and in the gun rags. Ross Siefried thinks RL 22 is THE powder for the 338 Win Mag, period.
I did an interesting study the other day. Very informal and hardly statistically significant.
I compared shells that were left at ambient temperature with some that had been frozen for several hours then hauled to the range and kept in an ice chest.
The cartridge of most concern was the 25-06. On two separate days I tested IMR 4831 behind the 100 grain Nosler Partition. The shells frozen and kept cold lost nearly a 100 fps versus those at ambient temperature. (which was only about 70 degress)
The odd thing is that shells loaded with IMR 4831 for my 300WSM only lost 23 fps. Again, it is probably a matter of stastitical insignificance since I only fired 5 of each type, cold and warm. But there was a clear and obvious drop in velocity in the 25-06.
I tested H 4350 and H 4831 in the 25-06 and they both actually went just a little faster when frozen and kept cold. They averaged about 30 fps faster when cold than those at ambient temperature.
When I tested RL 22 behind the 100 grain Partition in the 25-06 the cold shells lost 34 fps.
Probably not enough to matter.
But, I will stop shooting IMR 4831 in the 25-06 when hunting where it is really cold. Not a big problem, most of my hunting with the 25-06 is here in Califormia or in Wyoming or New Mexico for antelope which is early in the season.
I did an interesting study the other day. Very informal and hardly statistically significant.
I compared shells that were left at ambient temperature with some that had been frozen for several hours then hauled to the range and kept in an ice chest.
The cartridge of most concern was the 25-06. On two separate days I tested IMR 4831 behind the 100 grain Nosler Partition. The shells frozen and kept cold lost nearly a 100 fps versus those at ambient temperature. (which was only about 70 degress)
The odd thing is that shells loaded with IMR 4831 for my 300WSM only lost 23 fps. Again, it is probably a matter of stastitical insignificance since I only fired 5 of each type, cold and warm. But there was a clear and obvious drop in velocity in the 25-06.
I tested H 4350 and H 4831 in the 25-06 and they both actually went just a little faster when frozen and kept cold. They averaged about 30 fps faster when cold than those at ambient temperature.
When I tested RL 22 behind the 100 grain Partition in the 25-06 the cold shells lost 34 fps.
Probably not enough to matter.
But, I will stop shooting IMR 4831 in the 25-06 when hunting where it is really cold. Not a big problem, most of my hunting with the 25-06 is here in Califormia or in Wyoming or New Mexico for antelope which is early in the season.
Interesting about the temp. effects on velocities, I have always heard that RL22 shows wide velocity changes with temp. but have never tested it out myself.
RL22 is one of my favorite powders for the 6.5X55, 270win, 270wsm, 270bee and 340bee.
I will have to try it in my 338winny!!
:wink:
RL22 is one of my favorite powders for the 6.5X55, 270win, 270wsm, 270bee and 340bee.
I will have to try it in my 338winny!!
:wink:
- Thread starter
- #11
Thats what I had heard.That velosity would change drasticly with extreems of temp,& elevation.In all my own testing,I had never seen a change in point of impact due to velosity changes.It will change a little with air temp,& density thoe.But,I have been useing Hogdon Extreem powders all my reloading life.I'll definitly stick with the Hogdon Extreem.I think I'll try some with the H4831SC that I have laying around.I bought it for my 300 Win,but got such good results with Retumbo,I never used it.
Richracer1
Handloader
- May 12, 2005
- 2,141
- 121
I have a Browning 338WM w/the BOSS. I tried load developement, but resorted to loading Nosler MAX of 72.5gn of RL-19. Accuracy was good, but then I used the BOSS to better my group size. The average velocity of my shots was about 2744fps. I suppose I could increase it a little and retune with the BOSS, but have no desire too since this load is working for me. Harvested a nice cow elk this October.
Sorry, stupid me forgot to mention that I'm loading the 225 AB in my 338WM.
Sorry, stupid me forgot to mention that I'm loading the 225 AB in my 338WM.
I might have to try RL19 this winter in my 338...
I like the rifle so far, seems like it can shoot that 225grain Partition into some itty-bitty groups. Not a bad thing 8)
I am impressed also by how little it kicks compared to my 340bee and 338rum, of course, it won't boot out a 225 grainer at 3100fps either, guess you can't have it all
I will let you guys know how it goes with my new .338 bore!
I like the rifle so far, seems like it can shoot that 225grain Partition into some itty-bitty groups. Not a bad thing 8)
I am impressed also by how little it kicks compared to my 340bee and 338rum, of course, it won't boot out a 225 grainer at 3100fps either, guess you can't have it all
I will let you guys know how it goes with my new .338 bore!
- Thread starter
- #14
My rounds @ 2750+/- give me verry good accuracy with my BOSS @ 5.6.But they don't shoot as flat as my 250gr Sierra Game Kings did.I moly coat every round that goes through my rifle,& with 71gr of H4350,I was getting 2780 from the GK's.& My Infinity program was perfect all the way out to 600yds.It's off by 1/2 a foot @ 500yds. with the AB's.I'm useing 72gr. of H4350 for them,but not getting the MV for a better trajectory.They do HAMMER game thoe!! I'm going to stick with Hogdon Extreem powders.Going to try some @73gr of H4350,& maybe 74gr.depending on what I see @ 73gr.If I don't like it,I'll try some H4831SC,& see what I can get.Once it stops blowing 50mph around here!!!
Richracer1
Handloader
- May 12, 2005
- 2,141
- 121
I don't know how much altitude plays in MV, but my average 2744 fps is basically at sea level. I imagine the higher altitudes will get a little bit more due to the fact there is less air, and therefore less resistance. Again I don't know, it may not be much of a difference or it can be a big difference. Those with ballistics software can figure this out.
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- #17
I'm not real sure that elevation will affect the load too much.But I'm pretty sure that the temp's will.R Flowers informal test is good enough for me.& I had heard that some powders will change burn rate pretty drasticly with temp changes.& since I really live to hunt elk.I don't want to leave anything I have control over to chance.Anybody know what the closest Hogdon powder is to RL 19?I'm assumeing that it's either H4350,or H4831.I could be wrong.
I pulled out my number six Hornady reloading manual and was surprised at what I found on the chart of powder burning rates found on page 38.
It lists RL 19 immediately above H 4831 and RL 22 immediately below H 4831 in burning rate.
107. RL 19
108. H 4831
109. RL 22
I would have guessed RL 19 to be shown a little faster, closer to H 4350, but I guess not. Of course this is only a chart to show powders in order of burning rate. You cannot use it to judge how MUCH difference there is between each powder. I would suspect that RL 19 is faster than H 4831 by a greater amount than RL 22 is slower than H 4831. In my 300 Wby Magnum I cannot tell the difference in H 4831 and RL 22 when loaded with the same charges.
By the way, for you reloading manual fanatics like me, Midway sent me a flyer on the email that they have a new seventh edition of the Hornady reloading manual in stock and ready for orders at $26.99
It lists RL 19 immediately above H 4831 and RL 22 immediately below H 4831 in burning rate.
107. RL 19
108. H 4831
109. RL 22
I would have guessed RL 19 to be shown a little faster, closer to H 4350, but I guess not. Of course this is only a chart to show powders in order of burning rate. You cannot use it to judge how MUCH difference there is between each powder. I would suspect that RL 19 is faster than H 4831 by a greater amount than RL 22 is slower than H 4831. In my 300 Wby Magnum I cannot tell the difference in H 4831 and RL 22 when loaded with the same charges.
By the way, for you reloading manual fanatics like me, Midway sent me a flyer on the email that they have a new seventh edition of the Hornady reloading manual in stock and ready for orders at $26.99
- Thread starter
- #20
I think that settles it.I'm going to have to try some H4831.If I could get some more info on temp. changes in MV for different powders ,I'd be happy.I read the Hogdon Extreem powders claim to be the most stable powder on the market. It may be just hype.I don't know.I just know that after waiting for 6yrs. to draw a Bull permit,& my only shot @ one,(The only one I saw in 12 days hunting)was @ 516yds.A 200fps change in MV would have been the difference in my bull proudly hanging on my wall,& possibly a wounded bull,I never recovered.I do know that there is a 5000',& 50+ degree diference in where I load my ammo,& where I shoot my animals.Don't know if it would be worth the chance.
