Imr 4320

[MT Gianni]

I picked up some of this a while back from an estate. Looking at data it seems to almost anything yet not any one thing well. Varget or 4350 usually surpass it in velocity at lower pressures. Does any one have a favorite load for this? J-word or boolits though it seems too fast for cast. Thanks, Gianni

[badgeredd]

I picked up some of this a while back from an estate. Looking at data it seems to almost anything yet not any one thing well. Varget or 4350 usually surpass it in velocity at lower pressures. Does any one have a favorite load for this? J-word or boolits though it seems too fast for cast. Thanks, Gianni

With jacketed bullets, I liked the accuracy I usually would get in 35 caliber cartridges, especially 35 Whelen and 350 Rem Mag (don't have that one anymore) and I am current using it in a "new" wildcat that I am building a rifle for. As you said, 4350 usually gets more velocity with lower pressure but my Whelen loves it with a 225 J-words. I believe the load I usually have used was 58 grains with the Sierra 225 BTSP, at least that what I have in my log book (with a smiley face).

I did eventually settle on 4895 for a 250 bullet that I hunt with now.

Edd

[Glen]

For many years 4320 was THE powder for the 6.5 JDJ (and it is still an excellent choice), and then Accurate Arms came out with 2520.

[Blammer]

I liked 4320 in my 243 win and 100gr bullets. It was just as accurate as 4350 for me.

[Heavy lead]

I used to use it in a 338-06 and liked it, but switched to 4064 for convience sake only not because of performance.

[oneokie]

boolits though it seems too fast for cast. Thanks, Gianni


Would you elaborate on this, Please?

[Pioneer2]

If you have a .416 Taylor this is the powder.......................or .338-06..........Harold

[MT Gianni]

Would you elaborate on this, Please?

I was not referring to the burning speed but the boolit speed with mid or full loads would put me over 2200 fps, which I find hard to keep a boolit stabilized at.

[oneokie]

I was not referring to the burning speed but the boolit speed with mid or full loads would put me over 2200 fps, which I find hard to keep a boolit stabilized at.

Thank you for the information.

[Hardcast416taylor]

Hello Pioneer2. I would be interested in the loads you use in the .416 Taylor and the .338/06. I am a fan of the Taylor, did you guess? I use 3031 with the RCBS lead boolit at 45 grs. in a win. case and a win. mag. primer. Ken Waters gave me a 3031 load of 50 gr. but is too stiff a load for my shoulder. I am starting to work up a load for my .338/06 with cast boolits, so any help would be appreciated. My .416 load makes Irish cloverleafs, 5 shots, at 100 yds. and is a real grin to shoot. :castmine: Robert

[crowbeaner]

I use 4320 in a couple different cartridges and it shoots really well in them. My favorite 243 load uses it with an 85 grain Sierra, and my Remi Semi in '06 REALLY likes it with a 165 Hornady boattail. It is the easiest IMR extruded powder there is to measure, and SD and ES are quite good with uniformed brass. If you don't want it, send it my way and I'll dispose of it properly; 38 and 47 grains at a time, respectively.

[Boerrancher]

I use to use 4320 for a reduced load in my 6mm06 and 6mm284. It was great with the 85 and 100 gr Sierra bullets for punching paper. I had the velocity of a stiff 243 win load, but didn't have the noise and there was no recoil what soever. Great for shooting one hole groups in paper.

Best wishes from the Boer Ranch,

Joe

[S.R.Custom]

With jacketed bullets, I liked the accuracy I usually would get in 35 caliber cartridges...

Yup. It's a sub-MOA powder for use with Sierra's 225 gr SBT in the .358 Winchester in my Browning BLR. Haven't used it under cast bullets, tho, as I have no desire to push casties that hard. But being single-base, it *should* work quite well. (For reduced pressure castie loads in the .358, I use SR4759.)

[Buckshot]

..............For me IMR4320 had always been one of those powders that never seemed to fit whatever I was doing :-) In fact it was so far off my radar whenever it was mentioned in any reloading articles I'd do a doubletake, as it just never really seemed to be a favorite for much of anything.

However, when I had the 375-06 built I ran across only ONE article concerning that cartridge in "Rifle" or "Handloader" magazine since their inception. In it the author said IMR4320 was THE powder for this cartridge. I know 9.3x62AL also speaks highly of it in his 9.3x62 rifle. And it has done well with jacketed in the 375 Whelen. However, with heavy cast surp WC852 slow is the bee's patootie.

................Buckshot

[MakeMineA10mm]

It's probably the best powder out there for the 220 Swift and jacketed bullets too. It really has a broad range of uses, but they all seem to be "niche" areas where it excels. Probably why it's not talked about that much.

[Ricochet]

4064 was supposedly developed for the 220 Swift, and 4320's usually pretty close to it in the loading tables.

[bobk]

I don't have a favorite, special load with it, but I've never had an awful load, either, and I appreciate the small granule size. 3031, for example, is very versatile, but doesn't meter well. I intend to try 4320 in the .30-30 with cast.
Bob k

[muffinman]

I use it in the .35 Rem, 40 grains under the 225 cast gives me 2080 fps and average groups of .983 out of my Marlin 336. In my .45-70 guidegun 46 grains under the Lyman 457643 will shoot at or a little better than a inch, have not chronoed that load. I to am getting ready to work up some cast loads in a .30-30 Marlin.

[twotrees]

It is the powder for the 250 Savage, with all bullet weights.

2015BR worked as well with 100 gr's but not as well with the lighted bullets.

I have a 25 cal mold, but no gas checks, yet. Will have to try those in the 3-4 1/4 bores at some point.

[jhalcott]

I use 4320 in the 17 Remington rifle with 25 grain J bullets. UNCANNY accuracy and 4200fps!

[MakeMineA10mm]

4064 was supposedly developed for the 220 Swift, and 4320's usually pretty close to it in the loading tables.

Yeah, 4064 is "THE" powder for 220 Swift, with the traditional light (40-50gr) bullets. For fun, check out some heavier bullets, around 62gr and heavier, out of the Swift. That's where 4320 shines in the Swift. The 69gr Sierra MK in the Swift is awesome... Since I shot a buddy's Swift set up for that bullet about 15 years ago, the j-word bullet manufacturers have come out with even heavier ones - up to 80grs. I wonder what the 75-77gr Match bullets would do out of a fast-twist 220 Swift in the low to mid 3000s?

The nice thing about it is that one doesn't sacrifice much if 4320 is also used with the medium- to light-weight bullets in the Swift. It will be 50-75fps behind 4064, but that isn't much, especially at those speeds, and the pressure will be a little lower.

[**oneshot**]

I use it in my 6.5US target pistol. It was what was used by the previous owner and it works.

[singleshotbuff]

I use 4320 quite a bit in 8X57mm. Mostly with 175-200gr jWord bullets.

Great accuracy, velocity right up there with what the cartridge is capable of.

I really like 4320.

SSB