243 win powder

[nastynatesfish]

I traded my 308 off for this 243. I'm looking at powders I have to try.
I've got
TAC
IMR4007ssc
Imr4831
All them I have more than 5lbs of. Not gonna get into my varget for a new load venture or my h4831sc
I have 105 hornady match on hand and some 95 vlds
What say you?
Not sure on the twist yet. It's a 1970s Remington 243 varmint. 24" barrel

 

[MildBill]

if you are looking at the 105's and the 95's I would give the imr 4831 a try.

you should be able to find recipes for those bullets weights and that powder.

 

[abishai]

your twist is probably a 10 and a 1/4. 95s are good 105s may be marginal . If you can push the 105s with the fury of hell and scorned love they may stabilize . If your target has boolets going through sideways , use lighter pro jos . Let us know the results

 

[nastynatesfish]

I'll give a try this weekend. If not I guess I'll be looking to trade for some 70-90gr

 

[nastynatesfish]

Got a 3" group at 508yrds with the 105 match and 48.1gr imr4007sc seat at 2.71. Gonna work on seating depth. It shoots better at 300 and out than 200 yards. I'll work more with it next time I can and run it through the crony. It also shoots the 95 consler combined technology bullets pretty dang good at 200-500 with 48.5gr

 

[hunter243sgk]

That's great shooting. Where in the world did you find the 95g ct nbt. I have tried to find some of them for a year or two and cant never find them? Good luck with your load development .

 

[nastynatesfish]

They actually came with the rifle in trade. Not many. Only about 55. I was suprised too lol.

 

[CPorter]

A Rem 700 Varmint in 243 Win will have a 9.125 twist. Some will shoot the 105AMAX ok and some won't. Mine would shoot it about 1moa but not any better. The 70gr, 80gr, & 95gr ballistic tip all shoot fine as does the 87gr Vmax, 70gr TNT and some of the Sierras. I've used IMR 4831 with all of them with decent results, 1/2 moa or better, but have gotten better results on some with faster powders. 4007 doesn't show up in my load workups so I'm guessing it might be a bit too fast. TAC I've never heard of but appears to be around IMR4064.

 

[sbhooper]

IMR 4831 is very good with 100-grain Hornadys. The one load that I tried shot 1/2 inch from a Kimber Montana. The gun is very picky.

 

[5spd]

That's great shooting. Where in the world did you find the 95g ct nbt. I have tried to find some of them for a year or two and cant never find them? Good luck with your load development .

Try here, didn't say out of stock when I checked.
https://www.10ring.com/reloading/components/bullets/rifle-bullets/ballistic-silvertip-hunting
I run the 95 bare HBT and they are the tops in my 6mms over any other bullet for antelope/deer sized game.

 

[hunter243sgk]

Thanks i will check and see if they still have them. I have also been running the bare 95 nbt. Since its all i could find they do just as good with a little more fouling. And you are right they are a great deer bullet. Thanks again!!!

 

[sirius27c]

My 243 is an 8 twist, 29" barrel. I've been running H4350 and Berger 105 Hybrids to subMOA at 1000 yards (getting <1/2 MOA at 300, but haven't got to shoot at 1000 lately unless mirage is fierce.). I'm probably going to leave Hogden's, ADI makes great powder, but Hogdens isn't coming up with any, and I'm down to less than 8 lbs. One of my friends shoots TAC, and he's got me close to talked into it.

 

[nastynatesfish]

What kinda charge are you looking at with the TAC? I've got 6 lbs of it sitting and wanted to look into it

 

[Laurie]

I wouldn't use TAC in this cartridge with almost any bullet and certainly never with anything in the 90-105gn weight range. The powder's burning speed is way too fast to suit the case capacity to bore diameter mix. 60,000 psi is exceeded before you hit 40gn charge weight with a 105 and the case fill-ratio is below 80% at that level, well below optimum for consistent results.

Using a mismatched combination like this can produce fantastic results on one outing and poor ones on the next. It can also sometimes lead to the sudden appearance of excessive pressure problems. Ramshot itself doesn't list any TAC loads in its data for the 243 for any bullet weight, providing data for slower burning Big Game and Hunter only and those depending on the bullet weight.

 

[Dgd6mm]

I wouldn't use TAC in this cartridge with almost any bullet and certainly never with anything in the 90-105gn weight range. The powder's burning speed is way too fast to suit the case capacity to bore diameter mix. 60,000 psi is exceeded before you hit 40gn charge weight with a 105 and the case fill-ratio is below 80% at that level, well below optimum for consistent results.

Using a mismatched combination like this can produce fantastic results on one outing and poor ones on the next. It can also sometimes lead to the sudden

Ok oappearance of excessive pressure problems. Ramshot itself doesn't list any TAC loads in its data for the 243 for any bullet weight, providing data for slower burning Big Game and Hunter only and those depending on the bullet weight.

+1 Laurie is spot on.

 

[Chief 101]

If you can find Hybrid 100V powder it might be worth a try...i am getting excellent results with it using 100 gr bullets in both 6mmR and 243W. I have less than 50 rounds downrange with this but I couldn't find what I wanted and tried this and looks promising.

 

[hunter243sgk]

I have also had good luck with Hybrid 100 using 85-100g bullets.And get good velocity as well as good accuracy.

 

[nastynatesfish]

I settled on imr4007ssc. Great stuff. To bad they quit making it :-(
When I'm out of the 8lb jug I'll look at something else