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Thread: IMR 700x in rifle

  1. #1
    Boolit Master
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    Smile IMR 700x in rifle

    I've been trying out IMR700x in my SMLE and 2A.
    303- Lyman 314299 GC, un-sized, RP, no filler, Larz carnuba red lube.
    9.0gr- 50yds- 1" to 1 1/2". 100yds- 2" to 3", 7" low.
    10.0 gr- 50yds- 1" to 1 1/2". 100yds- 2" to 3", 5" low.
    308- Lee 185g sized to 309, GC, RP, no filler, Larz carnuba red lube.
    9.0gr- 50yds- 1" to 1 1/2". 100yds- 2" to 4", 6" low.
    10.0gr- 50yds- 1" to 2". 100yds- 2" to 4", 4" low.
    I'm going to try a 311 bullet in the 308.
    Seems like I could use more powder. I read somewhere the max is 14.0gr.
    Recoil was mild. Very clean burning. No primer pressure signs.
    I'm wondering if anyone else has used this powder????
    I did a search and didn't find much.
    For me, it seems to work better than Unique, Red dot and Blue dot.

  2. #2
    Boolit Master
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    Truthfully, I'd be very greatly surprised if there was any difference at all in accuracy or anything else between Red Dot and 700X. I have tried these two head to head, as well as similar powders and they all do pretty much the same thing.

    I find success with lighter than standard bullets for the caliber - like, say 113 grains in the .30's - and lighter than maximum charges of 13-14 grains. Try going down in bullet weight and trying the 8-10 grain region for mild plinking loads and velocities from 1300-1600 fps. If you could get the Lee Soup Can to fit your likely oversized barrel, the range mentioned would likely produce the best accuracy of which your rifle was capable. At least with that bullet weight.

    At these charge levels you may find that standard sized bullets could use a bit more velocity, and accuracy may be sub par as you have found out. I'd go to 2400 in that case as it can drive the bullet to more useful speeds for longer ranges and better accuracy.

  3. #3
    Boolit Master
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    Smile Tried different powders

    Thanks for the suggestions.
    I've tried Unique, 10gr to 13gr; 2400, 14gr to 17gr; Red dot, 12gr to 14gr; IMR4198, 20gr to 22gr; and Blue dot, 12gr to 16gr.
    At 50yds, all were about the same. At 100yds, they started to open up and became inconsistant. With 700x it seemed much more consistant.
    To me it feels like 700x gives a softer bang than Unique or Red dot. Kind of like Blue dot. From the burn chart, 700x is suppose to be a faster powder. Can it be fast and soft????
    I have the Lee 165 sks bullet mould. I'll try it in the 308 to see if a lighter bullet might be better. Don't have a light bullet mould for the 303. Any suggestions???? Maybe I'll try to beagel it to get it bigger.
    I'm looking for a load/bullet that would have the same point of aim at 50yds and 100yds, if possible, and group 1" to 2" at 100yds. Asking to much????
    I wish I had a cronograph.

  4. #4
    Boolit Master
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    From a SMLE you're asking for a lot if you expect that kind of accuracy (1-2 inches @100), considering that most of them won't come close to that with any load, jacketed or cast.

    You have one of the moulds for the fat .30's, hopefully? Two to three inches is not bad at all for a SMLE using the issue sights at 100 yards. Most of us have learned to be content with that. 2400 has my vote for an accuracy edge over the shotgun powders at the somewhat higher velocities that you desire.

    You're not gonna get a slower cast load to hit in the same spot as a full power load at 100 yards. That's okay. Can't have it all. If your 700X proves better over several range sessions then it may be for you, but I'd still be surprised if there was any real difference between the various shotgun powders in the loadings you mention. In the .308 or .303 14 grains of any of these powders is a great plenty and accuracy may deteriorate due to a little too much of a swift kick in the rear for the lead bullet.

    From your trajectory, and assuming you're zeroed exactly at 50 yards, you're in the 1100 to 1500 fps range.

  5. #5
    Boolit Master
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    Thanks

    Thanks for the info.
    I'll keep on playing with it.

  6. #6
    Boolit Mold Hi-Standard's Avatar
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    Not trying to hijack here, but have any of you guys had problems using pistol powders without fillers? I've only ever used Unique without fillers in my cast rifle loads. I have 700X, 800X, AA#2, and AA#5? I reload mostly fat 30's, 7.65x53, 7.62x54R, 303 Brit. etc. I would like to avail of my other powders as well, as the plinking chews up a lot of rifle powder.
    There's a difference in scratching your arse and tearing it all to pieces!

  7. #7
    Boolit Master RU shooter's Avatar
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    Any of the faster to med. speed pistol or shotgun powders I have used have been without any filler or powder wad. I have had best luck with Unique ,W231 and Bullseye 10, 7.5 and 6 grs respectively for "plinker" 100 yd loads in the 54R,7.5 Swiss, 303 and 30-06.

    Tim
    If you find yourself in a fair fight, your tactics suck!

  8. #8
    Boolit Mold Hi-Standard's Avatar
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    Quote Originally Posted by RU shooter View Post
    Any of the faster to med. speed pistol or shotgun powders I have used have been without any filler or powder wad. I have had best luck with Unique ,W231 and Bullseye 10, 7.5 and 6 grs respectively for "plinker" 100 yd loads in the 54R,7.5 Swiss, 303 and 30-06.

    Tim
    So AA#5 being a little faster than Unique and AA#2 being a little slower then Bullseye should be ok without fillers? I guess 800X maybe a little too slow?
    There's a difference in scratching your arse and tearing it all to pieces!

  9. #9
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    Larry Gibson's Avatar
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    abunaitoo

    Are you using a GC on these bullets?

    Also, 700X is very fast burning which is ok. I suggest you use less powder instead of more. I use a lot of Bullseye with such loads as I've found it to be the best. However, 700X does well also. I'd suggest you start at 5.5 gr and work back up to 9 gr in 1/2 gr increments in both cartridges.

    Larry Gibson

  10. #10
    Boolit Master
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    Gas checked

    I've not had to much luck without gas checks.
    Seems to be inconsistent and some leading.

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check