243 powder 100 gr bullet

[ironworkerwill]

You could try RL17. It's similar to the 4350s. It usually produces really good speeds.

 

[Gtscotty]

I think I'll just go ahead and buy a jug of H4350 ,I've been looking at the data on it and it looks like it's also a good powder for the 30-06,and the 7mm-08,even though I can't complain about my current load with IMR4064 for the 7-08..I had intended on using the 4064 for the 30-06,because I already have it on hand,but if I buy the H4350 I'll experiment with both..thanks for all the valuble advice everyone.

Sounds like a good plan to me, H4350 Is my single favorite rifle powder for mildly overbore cartridges. I have found good loads for H4350 in .30-06, .270 Win, .243 Win, and 6.5 CM. Just a solid all around performer.

Edit: More on topic, back when I had my .243, my go to load was 95gr Ballistic Tips over H4350 for 3040fps out of a 22" barrel.

 

[Mike Kerr]

Both IMR 4064 and H4350 have been, and remain personal favorites. I think I used more IMR 4064 in a Remington 788 in 243 than any other individual powder, shooting 100 gr to 105 gr bullets depending on what was available. I found out Speer 100 gr Grand Slam was a very consistent performer although pricey since it is a premium hunting round for pure target work. I also tried 4831SC. Group sizes were pretty consistent with any in the 100 gr category but not spectacular as far as group size. I finally switched to bullet weights in the 75 to 85 gr range and found what my 243 liked to eat. 4064, 4350, 4831 and Varget all shot well at the lighter bullet weights proving IMO that they were all very good powders but that my rifle liked a slightly lighter load. (Twist rate issue I suspect) I found some 90 or 95 gr Nossler that did very well also. Have fun.

 

[horsey300]

Both IMR 4064 and H4350 have been, and remain personal favorites. I think I used more IMR 4064 in a Remington 788 in 243 than any other individual powder, shooting 100 gr to 105 gr bullets depending on what was available. I found out Speer 100 gr Grand Slam was a very consistent performer although pricey since it is a premium hunting round for pure target work. I also tried 4831SC. Group sizes were pretty consistent with any in the 100 gr category but not spectacular as far as group size. I finally switched to bullet weights in the 75 to 85 gr range and found what my 243 liked to eat. 4064, 4350, 4831 and Varget all shot well at the lighter bullet weights proving IMO that they were all very good powders but that my rifle liked a slightly lighter load. (Twist rate issue I suspect) I found some 90 or 95 gr Nossler that did very well also. Have fun.

Got a 788 that keyholed the federal fusions at 50 yds, 1:9 twist is supposed to be sufficient for all of the longer pills but the only thing I can come up with, is the velocity lost on that 18" tube prevented the spin reaching the ideal rate. Hornady whitetail did slightly better but nothing to write home about on groups, threw some 80 gr downrange and voila! Now load it for varmints and if it's used for deer, it's flat bases. The old hornady round noses and a couple others work pretty good. Feller I know with a 20" 788 doesn't have the same problem so I'm stuck at velocity loss doesn't get the spin of the 1:9 fully imparted on it. I haven't tried the hunting ballistic tips but I'll have to keep that in mind!

 

[grubbylabs]

For me, Varget does great with the 70 grain bullets, and IMR 4831 does great with 85 grain bullets, I cant get anything heavier than 85 grains to shoot out of either of my .243's. But the deer I killed with them this year did not care that the bullet was only 85 grains.