4350 Powders

Snowboy

Well-Known Member
Joined
Sep 30, 2015
Messages
80
Location
Ontario Canada
Ahoy Mates!
I have questions for the seasoned reloaders… I have 7 mid 50’s and early 60’s rifles that were Grandpa’s. He was a gunsmith. A .243 Win, a 264 Win Mag, a 7mm Mauser, a 7mm Rem Mag, 2 .308 Norma Mags, and a .338 Rem Mag. I am starting to do the reloading process, and after watching this forum, was hoping to keep things safe, yet simple. Powders listed for 5 of these calibers is the 4350. 1 powder, 6 calibers sounds like a win-win. Looking through the Lyman’s 50th bible, the mid weight bullets say IMR 4350 and it appears the heavy weights suggest H4350. It also claims that Accurate 4350 was created to compete against IMR 4350, but you can’t use the IMR data loads. I have Accurate and IMR 4350, been in the hunt for H4350 for a year,
Am I totally wrong wanting to try to use one powder for all? All of the belted calibers listed, Lymans say the IMR 4350 propellant is very accurate. Toss on the next challenge: wanting to get exclusive with hammer bullets because of CA. so load development is even less available…
Ideas? Thoughts? Other powders?
Hunting Whitetail, Antelope, Mule deer, wild boar, Elk and Bear. Not trying for Groupings of minimal MOA @ 1000yard stuff. Ideal range is <500
Thanks everybody
For the magnums H 4831 is excellent.
 

rated44

Member
Joined
Mar 23, 2012
Messages
7
Ahoy Mates!
I have questions for the seasoned reloaders… I have 7 mid 50’s and early 60’s rifles that were Grandpa’s. He was a gunsmith. A .243 Win, a 264 Win Mag, a 7mm Mauser, a 7mm Rem Mag, 2 .308 Norma Mags, and a .338 Rem Mag. I am starting to do the reloading process, and after watching this forum, was hoping to keep things safe, yet simple. Powders listed for 5 of these calibers is the 4350. 1 powder, 6 calibers sounds like a win-win. Looking through the Lyman’s 50th bible, the mid weight bullets say IMR 4350 and it appears the heavy weights suggest H4350. It also claims that Accurate 4350 was created to compete against IMR 4350, but you can’t use the IMR data loads. I have Accurate and IMR 4350, been in the hunt for H4350 for a year,
Am I totally wrong wanting to try to use one powder for all? All of the belted calibers listed, Lymans say the IMR 4350 propellant is very accurate. Toss on the next challenge: wanting to get exclusive with hammer bullets because of CA. so load development is even less available…
Ideas? Thoughts? Other powders?
Hunting Whitetail, Antelope, Mule deer, wild boar, Elk and Bear. Not trying for Groupings of minimal MOA @ 1000yard stuff. Ideal range is <500
Thanks everybody

Do you have your grandfathers loading notes, great selection of rifles. Back in his day there wasn’t the vast amount of powders available to people, just to open yourself up check out Ammo Guide, they have thousands of loads listed for almost every rifle. It will give you some insight to the possible powders available. One has to remember you can’t change the riffling to get more velocity, it’s about hitting what your shooting at. A slower moving bullet does more damage. Lots of luck with your research
 

RD57

Well-Known Member
Joined
Oct 10, 2017
Messages
107
Location
East TN
H4350 is the only one of the three powders I've ever used. I currently use it in the 220 Swift, 243 Win, 270 Win, 30-06, and 338 Win Mag. It is very temperature stable and I've shot it from 0 - 105 temps. If I were to use a different powder then it would be RL16 which has demonstrated to me the same qualities as H4350.
 

baldhunter

Well-Known Member
Joined
Jun 18, 2008
Messages
810
Location
Texas
When I did a comparison test with the three 4350 powders all loaded at the same charge weight in my 30-06 with a 165gr bullet,A4350 gave me the highest velocity and the best group,followed closely behind was IMR 4350.It was only about 15fps less and group size was just a tad larger.H4350 was the slowest About 30fps slower and gave me a slightly larger group than the other two.The groups ranged from just under one half inch to just over three quarters of an inch,so really all three powders performed really well in the test.Here is another kicker.I use Winchester cases and they tend to have a larger volume.When all three powders are loaded at the same charge weight,A4350 fills the case the fullest,followed by IMR4350,then H4350 giving the most extra room in the case.I could have easily added one or more grains of powder in the case with H4350 and an easy half grain more with IMR 4350,but I was already at a compressed load with A4350.So If I was to tweak these three loads where they filled the case to the same volume level,H4350 would have most likely given me the highest velocity with a one grain increase,followed by IMR4350 with it's half grain increase and A4350 staying the same charge.I don't know how my groups would have changed,but a little tweaking can make a difference in the results.
 

Wild_Bill

Well-Known Member
Joined
Sep 15, 2005
Messages
824
I would use 2 powders H4350 is good for the 243 and 338 win mag, the others would benefit to use H1000
You can load everything with 4350 but in the small bore magnums you will have low velocity at high pressure.
You need to optimise powders to the cartrige
 

emp1953

Well-Known Member
Joined
Sep 29, 2013
Messages
387
I use IMR4350 in my .243 Remington model seven. 35.4gr topped with a 100gr Nosler Partition. Dime sized groups all day long at 150yds. And an absolute deer slayer. When I needed more powder I could only find H4350 so I got two 8lb kegs. The H4350 burns a bit slower than the IMR I started 2gr below my IMR load and worked up. Never got the dime sized groups but it will shoot quarter sized groups at 150yds. If I had the patience to mess with bullet seating depth I bet I could have brought the groups tighter, or perhaps tried the 95gr NPT. Never tried the AA4350. Your goal of simplicity over a number of calibers will force you into the situation where you aren't quite satisfied with the performance of a certain caliber/rifle combo. Each rifle is its own animal and must be feed the proper diet to keep it and its owner happy.
 

skipglo

Well-Known Member
LRH Team Member
Joined
Jan 23, 2015
Messages
2,208
Location
Alberta
Ahoy Mates!
I have questions for the seasoned reloaders… I have 7 mid 50’s and early 60’s rifles that were Grandpa’s. He was a gunsmith. A .243 Win, a 264 Win Mag, a 7mm Mauser, a 7mm Rem Mag, 2 .308 Norma Mags, and a .338 Rem Mag. I am starting to do the reloading process, and after watching this forum, was hoping to keep things safe, yet simple. Powders listed for 5 of these calibers is the 4350. 1 powder, 6 calibers sounds like a win-win. Looking through the Lyman’s 50th bible, the mid weight bullets say IMR 4350 and it appears the heavy weights suggest H4350. It also claims that Accurate 4350 was created to compete against IMR 4350, but you can’t use the IMR data loads. I have Accurate and IMR 4350, been in the hunt for H4350 for a year,
Am I totally wrong wanting to try to use one powder for all? All of the belted calibers listed, Lymans say the IMR 4350 propellant is very accurate. Toss on the next challenge: wanting to get exclusive with hammer bullets because of CA. so load development is even less available…
Ideas? Thoughts? Other powders?
Hunting Whitetail, Antelope, Mule deer, wild boar, Elk and Bear. Not trying for Groupings of minimal MOA @ 1000yard stuff. Ideal range is <500
Thanks everybody
You are only totally wrong trying to use one powder for ALL....WHEN ITS NOT AVAILABLE! Throw few H1000s into your mix just in case
 

johnnyk

Well-Known Member
Joined
Dec 24, 2001
Messages
2,350
Location
Potters Hill, NC
"Am I totally wrong wanting to try to use one powder for all? All of the belted calibers listed, Lymans say the IMR 4350 propellant is very accurate. Toss on the next challenge: wanting to get exclusive with hammer bullets because of CA. so load development is even less available…
Ideas? Thoughts?"

No, nothing wrong with that thinking at all. The "4350" is a versatile burn rate, whether it's IMR, H or AA. I have used all of these at one time or another. The deer, bear, coyotes, crows, ground hogs and hogs never knew what propelled that bullet that either terminated them or scared (I do miss!) the be-Jesus out of them.

Some of my best accuracy, in several cartridges, has been with IMR4350. It rocks. Including some you mentioned. I love that powder, but "A man's just got to know his limitations". Use it as a tool or be used as a tool. Work up to your rifles max whether it's July or January.

Seems to me, with the current long range craze, a lot of new (and old) shooters are lead to believe that "Extreme" and other temperature stable powders are the only way to go. That's just not so and creates "niche" shortages within shortages. All good, dry powder goes BANG. It's our job as reloaders and responsible gun owners to find the best and safest combination of bullet, brass, powder and primer to fit OUR rifle(s).

I like and use a variety of powders. I probably have more than I'm allowed but that's another subject for another thread. I believe any rifle/bullet combo can be made to shoot sub MOA with the right amount of the proper burn rate powder. 50 years of reloading, shooting and hunting is good experience. :)
 

L.Sherm

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LRH Team Member
Joined
Jul 26, 2017
Messages
4,314
Theres abig difference in hunting season Temps on the east and west cost vrs the Rocky Mtn states. One day it could be 50 deg. 2 days latter -10 below. Alot of powders can have 1 deg per 1 fps or more difference so that can be 50-60 fps difference that can easily get you in an over pressure situation or crip an animal,
I'll stick with stable powders.
 

Huntfly

Well-Known Member
Joined
Jun 29, 2021
Messages
158
Location
Ga
Ahoy Mates!
I have questions for the seasoned reloaders… I have 7 mid 50’s and early 60’s rifles that were Grandpa’s. He was a gunsmith. A .243 Win, a 264 Win Mag, a 7mm Mauser, a 7mm Rem Mag, 2 .308 Norma Mags, and a .338 Rem Mag. I am starting to do the reloading process, and after watching this forum, was hoping to keep things safe, yet simple. Powders listed for 5 of these calibers is the 4350. 1 powder, 6 calibers sounds like a win-win. Looking through the Lyman’s 50th bible, the mid weight bullets say IMR 4350 and it appears the heavy weights suggest H4350. It also claims that Accurate 4350 was created to compete against IMR 4350, but you can’t use the IMR data loads. I have Accurate and IMR 4350, been in the hunt for H4350 for a year,
Am I totally wrong wanting to try to use one powder for all? All of the belted calibers listed, Lymans say the IMR 4350 propellant is very accurate. Toss on the next challenge: wanting to get exclusive with hammer bullets because of CA. so load development is even less available…
Ideas? Thoughts? Other powders?
Hunting Whitetail, Antelope, Mule deer, wild boar, Elk and Bear. Not trying for Groupings of minimal MOA @ 1000yard stuff. Ideal range is <500
Thanks everybody
Sound reasoning, I have used imr and accurate in 7mag and 270 both worked fine. I have found accurate to not be as clean as imr leaving alot of residue in my barrel. This did not seem to affect accuracy.

There is seldom one size fits all in the reloading game!
 

Roughrice

Well-Known Member
Joined
May 5, 2021
Messages
306
Location
Louisiana
Works me in all these hunting rounds... H4350 in 260, 6.5 Creed, 6.5 284, 284 Win, 280 + 280AI, 30-06 and 180 grain bullets in 300 Win Mag. All very accurate and within my satisfactory velocity range.
 

DWier

Well-Known Member
LRH Team Member
Joined
May 16, 2019
Messages
238
Location
Orlando, Florida
I started using IMR 4451 in my 6.5creed when I couldn't find H 4350. I used 41 gr IMR with Berger 130 OTM Hybrid rather than 43 gr H4350. Groups about the same (1/2") and IMR 10fps faster. Can't answer temp stability as I'm in Central Florida where it's always hot.
 

Mikecr

Well-Known Member
Joined
Aug 10, 2003
Messages
5,724
Location
NC, oceanfront
My I4350 is a bit slower than my H4350. I had to calibrate QuickLoad for this.
Anyway, it happens for me that my IMR is a better case fill, so I went that direction.
Bad case fill -forget the load -regardless of apparent results.
 
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