BridgerMT: What powder did you use?
Has anyone tried the new Winchester StaBALL HD powder in the 338 Lapua Magnum?
Has anyone tried the new Winchester StaBALL HD powder in the 338 Lapua Magnum?
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h1000 for 300 grain bergersWhat powder did you use?
Has anyone tried the new Winchester StaBALL HD powder in the 338 Lapua Magnum?
BridgerMT: What powder did you use?
Has anyone tried the new Winchester StaBALL HD powder in the 338 Lapua Magnum?
Hi , would you be able to share powder loads please ? I'd like to try IMR4831 with 250 grain Scenar but can't find any dataI use IMR 4831 and 250 grain Lapua Scenars in my .338 Lapua . but not the H 4831 . I have had extremely good luck with this .
Just as good as Lapua. Can't go wrong with either one. I use both, but have more of Peterson brass.Has anyone tried Peterson 338 Lapua brass? I've used their 6.5 Creedmoor brass and it's on par with Lapua and Alpha brass.
what were your SD's.... you can't say that and not mention itNot wanting to deplete my N570 and RL33 stocks I use for .300NM & .338LM Improved respectively, I decided recently to work up a load in my shorty 18" vanilla .338LM using N565. Initially I thought this might be a bit on the fast side, but boy was I wrong. On top of that, I got fantastic groups and SD right out of the gate. My powder ladder was 85-90gr and only started seeing pressure at the top. Groups didn't vary a whole lot between 86-89gr either, so I did some seating tests with 89gr and settled on 3.863" COAL, which is about 0.025" off the lands.
300 A-Tip
Lapua Brass
CCI250
89gr N565
3.863" COAL
2580fps out of 18" barrel
View attachment 8077360
I have. I tried it with Berger 300's and liked it. 101 grains gave me 2850 fps (H1000 96 grains gave me 2790) out of a 30" barrel. I didn't measure the groups, but they were probably .5-.7 moa. I usually use H1000 but I would have no problem switching over to LRT if need be.any one tried Ramshot LRT, been running N570, with 300gr Berger H
You forgot to include that if he does develop a good round using StaBall HD, he can now accurately throw his powder instead of weighing it.He wants H1000 for 250 grain bullets and Retumbo for 285 and 300 class bullets. Maybe N570 if he doesn't care about his barrel.
I don't have experience with Staball HD in 338, but looks like it's right there w RETUMBO as far as burn rate.
What I do know is this: with a charge of 90ish grains, the difference in the cost of those 2 powders is $0.15 per round. That cost is too miniscule to worry about considering the other costs involved: case, bullet, primer, barrel, and, if it doesn't shoot well, waste of hundreds of dollars in load development (although if he reports it here, it will be a service to the community).
Because H1000 is a go-to powder for 250s, and Retumbo for 285/300s, he's rolling the dice w Staball HD, and doing it to save a nickel and a dime.
YMMV
you need to try StaballI've tried Retumbo with 285 & 300 grain projectiles and H1000 gave better accuracy with both in my rifle. Each rifle and component combination has its own preference.
It's not so much the cost as it is the ease of metering and the availability. Staball powders have historically been VERY good in the availability dept.
Did you try actually looking it up on the Vihtavouri website? I did and in less than one minute, found this info. Again, 3000 fps is nowhere in sight. Not even close.Brass: Lapua
Primer: CCI 250
Projectile: Berger Scenar 300
Powder: VN570
Twist rate: 1:9.35
Accuracy International AX 338 27" barrel
OAL to Ogive: 3.035
COL: 3.895 (won't fit in mag)
I have some of the above test loads ready to go - starting at 78.5 gr going up 0.5 gr increments up to 82 gr. I was able to take one shot over the weekend before getting rained out. With 78.5 gr of powder I was at 2349 fp/s. Was expecting closer to 2,700 fp/s too.
Wondering if anyone has better loads for VN570 and if I should just pull the bullets and redo it. From what I can tell though 85.6 gr is the max charge, but I'm so far away from 3,000 fp/s as is. Is it the 570? Anyone have load data for the above components?
Wondering if anyone has better loads for VN570 and if I should just pull the bullets and redo it. From what I can tell though 85.6 gr is the max charge, but I'm so far away from 3,000 fp/s as is. Is it the 570? Anyone have load data for the above components?
You are also understanding the relationship between COL and velocity for a given powder charge. In most cases the increase in internal volume caused by an increase in overall length means a decrease in internal pressure and the accompanying decrease in velocity. That 0.214” results in a considerable increase in internal case volume available for powder.Really appreciate that, I guess I'm now confused as to why Vihta is saying 85.6 gr is max charge for the 300 Berger but you're safely using 92. I'm pleased knowing that my velocity is consistent with what you just posted, thanks.
Yep, the lightbulbs were going off (by which I mean on) over here while I was reading and rereading everything posted. Really appreciate the help.You are also understanding the relationship between COL and velocity for a given powder charge. In most cases the increase in internal volume caused by an increase in overall length means a decrease in internal pressure and the accompanying decrease in velocity. That 0.214” results in a considerable increase in internal case volume available for powder.
That’s why dogtown ran the numbers for your specific load length. That’s also why he is able to safely load 92 gr in his longer COL rounds.
Hi . Sorry its been so long in getting back to you . I used 80g even and it shoots pretty tight groups .Hi , would you be able to share powder loads please ? I'd like to try IMR4831 with 250 grain Scenar but can't find any data
91gr N570 Lapua brass w/285 eld @2900ish 27” AXMC factory 338lm bbl.Brass: Lapua
Primer: CCI 250
Projectile: Berger HPBT (Hybrid OTM)Scenar300
Powder: VN570
Twist rate: 1:9.35
Accuracy International AX 338 27" barrel
OAL to Ogive: 3.035
COL: 3.895 (won't fit in mag)
I have some of the above test loads ready to go - starting at 78.5 gr going up 0.5 gr increments up to 82 gr. I was able to take one shot over the weekend before getting rained out. With 78.5 gr of powder I was at 2349 fp/s. Was expecting closer to 2,700 fp/s too.
Wondering if anyone has better loads for VN570 and if I should just pull the bullets and redo it. From what I can tell though 85.6 gr is the max charge. Is it the 570? Anyone have load data for the above components?
90 gr of H1000 with a 285ELD-M in Lapua brass91gr N570 Lapua brass w/285 eld @2900ish 27” AXMC factory 338lm bbl.
IMHO You're wasting your time with 0.5gr increments in a case the size of a 338LM.Brass: Lapua
Primer: CCI 250
Projectile: Berger HPBT (Hybrid OTM)Scenar300
Powder: VN570
Twist rate: 1:9.35
Accuracy International AX 338 27" barrel
OAL to Ogive: 3.035
COL: 3.895 (won't fit in mag)
I have some of the above test loads ready to go - starting at 78.5 gr going up 0.5 gr increments up to 82 gr. I was able to take one shot over the weekend before getting rained out. With 78.5 gr of powder I was at 2349 fp/s. Was expecting closer to 2,700 fp/s too.
Wondering if anyone has better loads for VN570 and if I should just pull the bullets and redo it. From what I can tell though 85.6 gr is the max charge. Is it the 570? Anyone have load data for the above components?
you sure you weren't thinking 250 grains @ 3,000 fps.Brass: Lapua
Primer: CCI 250
Projectile: Berger HPBT (Hybrid OTM)Scenar300
Powder: VN570
Twist rate: 1:9.35
Accuracy International AX 338 27" barrel
OAL to Ogive: 3.035
COL: 3.895 (won't fit in mag)
I have some of the above test loads ready to go - starting at 78.5 gr going up 0.5 gr increments up to 82 gr. I was able to take one shot over the weekend before getting rained out. With 78.5 gr of powder I was at 2349 fp/s. Was expecting closer to 2,700 fp/s too.
Wondering if anyone has better loads for VN570 and if I should just pull the bullets and redo it. From what I can tell though 85.6 gr is the max charge. Is it the 570? Anyone have load data for the above components?
The forest through the trees bit is that I was shooting slow based on the load data I had - not realizing that my extended c.o.a.l had effects on velocity. I learned something, which is great.you sure you weren't thinking 250 grains @ 3,000 fps.
300 grains at 3,000 fps.. if you barrel doesn't explode, I'd like to see that load. 300gr @ 2,800 fps is getting hot
The forest through the trees bit is that I was shooting slow based on the load data I had - not realizing that my extended c.o.a.l had effects on velocity. I learned something, which is great.
My bad for calling an oak tree a maple.
Also I just watched homie here send a 285 gr pill @ 2,900
The forest through the trees bit is that I was shooting slow based on the load data I had - not realizing that my extended c.o.a.l had effects on velocity. I learned something, which is great.
My bad for calling an oak tree a maple.
Also I just watched homie here send a 285 gr pill @ 2,900