imr 4064 or 4350 for 243 and 308

[caper736]

I'm presently loading 243 with varget and 95gr sst. I'm wanting to try a different powder to test. I've been reading that 4064 is excellent with 243 but I'm reading good things about 4350 too. Which of the two powders would be more versitile? I plan on trying different weight bullets also. I load 308 too so if I could get a powder that works for both calibers that would be a bonus.

 

[Ganderite]

For 243 I would use 4350.


For 308, with 180 gr bullets (my preference for deer and moose) 4350 works just fine.

 

[hawk-i]

Imr 4064 gives me good result one of my 308.

 

[PitBull1973]

Actually 4064 is great with a 175 SMK for 308

 

[GMC403]

I'm using 4064 with my 243 and 308 and am very happy with the results.

243- (100 gr partitions & 95gr sst)

308- (150 > 180gr all types)

 

[billdick]

4064 is so close to varget its ridiculous so if you wanted a bigger change go for the 4350.

 

[Eagleye]

It might be worth looking at the new IMR 4451 for both chamberings. It is 4350 burn rate, but a bit denser.

Dave.

 

[thump_rrr]

I use 4064 in my M1A and Garand loads but I find it less temperature stable than Varget or IMR 8208 XBR which I use for my bolt guns.

 

[Boomer686]

IMR 4064 has been very good in .308 for more than half a century! I have several loads that are superb in MY rifles. YMMV Best to develop & test as all rifles are different but again... it's hard to go wrong with 4064!

 

[Rickster66]

I use 4064 for my 308 loads both my bolt Tikka T3 and my Garands (.308 and 30-06). Accurate enough for me. Haven't shot for accuracy in the cold so can't comment in the impact temp has on it. It is my go go powder for .30 cal.

 

[257Roberts]

I have been using the 4350's in my 243's with heavier bullets.
I do not load for the 308 at this time but the 4064 range of powders.
I have recently been trying IMR4451 and it is working as well as 4350.
As far as lighter bullets and the 243, 4064 will work.

David

 

[Ltbull01]

Definitely the 4064 in the 308. No experience with 243.

 

[galamb]

Don't overlook H414/Win 760 (exactly the same powder).

They work very well in the 243 as well as the rest of the 308 family (308, 7.08) at least when shooting typical hunting weight bullets from the respective calibers.

I "typically load" Varget and 4064 for my 243 but when it was tough to get powder, 414/760 was still fairly available and after giving it a try, I found with certain loads that it gives me upwards of 100 fps more speed compared to Varget and H4350 before I start getting pressure signs.

Worth having a look at.

 

[captainmike]

+1 for the new IMR4451

 

[doc25]

I use varget in both. It seems though that varget is giving me poor results with the heavier 243 bullets. Thinking about 4350 as well. Is this a temperature stable powder like varget?