Anybody used imr 4007 ssc?
- Thread starter Morgan321
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I really like it and try to always keep some on hand. Its a very versatile powder, although I use it primarily in my 243 reloading and 308 reloading, I did use it some in my 30-06 reloading with the lighter bullets (110gr to 140gr). When I used the heavier bullets, I usually went with H414 because I couldn't find load data with SSC 4007. My lighter bullets in 308 loves it as well, but I have yet to load my 168gr SMK with it. I'm working up a load with H4895 first and then I will try SSC 4007 because at max load with both, the 4007 is actually producing higher velocities
I'm getting decent results with it reloading for .308.
MVs are a little slower than what I get out of I4895 but accuracy is good.
Slightly compressed loads which I believe helps consistency.
Joe
MVs are a little slower than what I get out of I4895 but accuracy is good.
Slightly compressed loads which I believe helps consistency.
Joe
I hate to beat a dead horse, but nothing else? I will run out of what I have in a month or so and need to resupply! I can get onesy-twosy pounds local at $35/lb of a few powders or get this from powder valley at a normal price. Yes, hazmat fee included.
I'd love to buy an 8lb jug for consistancy over 1000 rounds, but 8lb is a lot of powder if it sucks! The alternative is $35/lb a pound or three at a time locally with no guarantee of being able to get more of any specific powder.
I'd love to buy an 8lb jug for consistancy over 1000 rounds, but 8lb is a lot of powder if it sucks! The alternative is $35/lb a pound or three at a time locally with no guarantee of being able to get more of any specific powder.
Not that it means much, but I ran it in QuickLoad (200 gr SMK, 24" bbl) and at similar pressure (57k psi) Rl-19 produces 2658 FPS with 56.8 grains of powder and I4007SSC produces 2573 fps with 51.35 grains of powder.
The RL-19 is 4.4% compressed at that load but there's still room in the case for more 4007 if you're brave.
Of course (disclaimer), this is just a simulation, so don't just try this without working up from at least a 10% lower charge.
Joe
The RL-19 is 4.4% compressed at that load but there's still room in the case for more 4007 if you're brave.
Of course (disclaimer), this is just a simulation, so don't just try this without working up from at least a 10% lower charge.
Joe
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That is close to what I have gathered. 4007ssc is faster burning than RL19 and thus uses less to get the same peak pressure? But the slower powder has less peak pressure but higher pressure after the peak giving higher velocity? I'm not after maximum power so I'm OK with that. Is there some rule of thumb about how full you want your rounds packed with powder?
175 and 190smk are available now, do either of those have an advantage over the other? Realistically I won't get to shoot 1000yd as often as I'd like so 175 is good enough plus less recoil. The performance on the 190 is tempting though! Given that my goal is to improve my shooting and loading skills I'm tempted to go with the 175 for less recoil. Suggestions?
175 and 190smk are available now, do either of those have an advantage over the other? Realistically I won't get to shoot 1000yd as often as I'd like so 175 is good enough plus less recoil. The performance on the 190 is tempting though! Given that my goal is to improve my shooting and loading skills I'm tempted to go with the 175 for less recoil. Suggestions?
Can't help you with the 30-06 part as i use it in a 308 but it was recommended to me by Andrew McCourt. It is in between varget and h4350 in burn rate. Temp sensitivity seems to be pretty good in my testing, probably the same or a little better than PP 2000mr with about the same burn rate, a touch slower. It is very accurate and likes a little compression.
I have gotten 185's to scream with it, more fps than varget with less pressure (pressure with this powder comes on real slow) I also have a good load with it for 200 & 230 berger hybrids.
In my book, the slowest powder you can run and still get a good burn and the desired mv, the better.
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I have gotten 185's to scream with it, more fps than varget with less pressure (pressure with this powder comes on real slow) I also have a good load with it for 200 & 230 berger hybrids.
In my book, the slowest powder you can run and still get a good burn and the desired mv, the better.
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Played around with it in 22-250 with good results.
Was going to try it in 260rem but finally found some h4350 so I never got around to it.
Was going to try it in 260rem but finally found some h4350 so I never got around to it.
FWIW...
I've begun reloading for a .308 recently, a new caliber for me to reload for. Started using N-540 with beautiful 1 hole results after getting close to the lands. Only had two pounds to start with and now only have one left. Decided not to buy more at between 36 and 47 dollars a pound, I found some IMR 4007ssc in the closet from a couple of years ago. Checked the burn chart and found it 2 clicks above N-540. Well !
I began working up a load according to published chart information in 4/10ths grain increments and had phenomenal results on a 90 degree day.
The two uppermost loads produced a .690 and .800 (edge to edge ) one hole group at 100 yards. Two other groups in the middle of the run produced 3n1 hole with 1 flyer (4 shot groups)
This powder certainly performed much different than I have ever experienced . It was quite a surprise. So if you're looking for a substitute for that expensive and hard to find N-540, IMR 4007ssc may be worth a try.
Of course the devil's in the details so here they are. SSG .308, 23.5 in. barrel ,1:11 twist, 175gr. Barnes Match Burner, Lapua once fired brass trimmed to 2.005 , Federal 210 Match Primers ,seating according to sami specs.`(~2.800 c.o.a.l. ) 90F degrees. 35% humidity.
I want to add that the upper powder charges if not all of the charges were compressed. However, and just dang curious, none of the primers showed any signs of pressure and the case lengths lengthen by a couple thou. Also curious was that the second powder charge shortened the cases from 2.0055-2.006 to 1.999-2.001. (4 shots, 4 cases)
The chrony will have to wait for next year. ( deer aren't really interested in those things.)
I'm pretty stoked by these results and more testing to follow, verification etc.
I've begun reloading for a .308 recently, a new caliber for me to reload for. Started using N-540 with beautiful 1 hole results after getting close to the lands. Only had two pounds to start with and now only have one left. Decided not to buy more at between 36 and 47 dollars a pound, I found some IMR 4007ssc in the closet from a couple of years ago. Checked the burn chart and found it 2 clicks above N-540. Well !
I began working up a load according to published chart information in 4/10ths grain increments and had phenomenal results on a 90 degree day.
The two uppermost loads produced a .690 and .800 (edge to edge ) one hole group at 100 yards. Two other groups in the middle of the run produced 3n1 hole with 1 flyer (4 shot groups)
This powder certainly performed much different than I have ever experienced . It was quite a surprise. So if you're looking for a substitute for that expensive and hard to find N-540, IMR 4007ssc may be worth a try.
Of course the devil's in the details so here they are. SSG .308, 23.5 in. barrel ,1:11 twist, 175gr. Barnes Match Burner, Lapua once fired brass trimmed to 2.005 , Federal 210 Match Primers ,seating according to sami specs.`(~2.800 c.o.a.l. ) 90F degrees. 35% humidity.
I want to add that the upper powder charges if not all of the charges were compressed. However, and just dang curious, none of the primers showed any signs of pressure and the case lengths lengthen by a couple thou. Also curious was that the second powder charge shortened the cases from 2.0055-2.006 to 1.999-2.001. (4 shots, 4 cases)
The chrony will have to wait for next year. ( deer aren't really interested in those things.)
I'm pretty stoked by these results and more testing to follow, verification etc.
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You're certainly right J-Rod. I discovered that sad piece of information a few hours after posting my results. I was sourcing more powder when I came across a thread from March.
That was a kick in the guts. Thanks IMR. . . NOT.
I did e-mail IMR voicing my views. I know others have as well. Each e-mail sent will represent x-number of reloaders that won't send an e-mail. They know this, basic marketing. So we need to get enough folks sending e-mails to make them second-guess that knee-jerk decision.
O, Well
That was a kick in the guts. Thanks IMR. . . NOT.
I did e-mail IMR voicing my views. I know others have as well. Each e-mail sent will represent x-number of reloaders that won't send an e-mail. They know this, basic marketing. So we need to get enough folks sending e-mails to make them second-guess that knee-jerk decision.
O, Well
There is 4007 in stock at IMR 4007 SSC - Big Game Hunter Supply
Seems it can still be found, maybe IMR got enough emails to reconsider discontinuing it?
Seems it can still be found, maybe IMR got enough emails to reconsider discontinuing it?
I use it for 100 gr amax in 260 and heavies in 223.
Works well.
I heard it was discontinued but it sure seems easy to find.
Works well.
I heard it was discontinued but it sure seems easy to find.
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