H4350 - am I doing it wrong?

[Wrench]

I load h4350 over a srp and have had zero problems. The one mile videos I did were done with that combo.

H4350 has held the 1k br record for quite a while.

 

[Mtndawger]

As I noted, this is across the number of different guns over a long period of time, so I don't really think so.

As an example, one of my Remington 700 30-06's will drill 30 rounds into a 1 inch hole when fed with Varget and 150 Accubonds seated at 3.340. I've tried 150, 165, and 180 Accubonds over H4350 in the same rifle, and yes I played with the seating depth, and it's never shot a five round group under 3 in with any of those experiments.

That example is pretty extreme, most of my rifles are not that dramatically worse with H4350, but other than my 7x57, that is the kind of results I usually get.

I was mostly trying to zero in on neck tension. Also have you read the Painless Load Development thread? Highly recommended.

Thread 'Painless load development (mine)'

Oct 25, 2021

I have had multiple people ask me to lay out how I do load development being that what I do is different. Since Shaen @Shooter71 just rebarreled a Tikka 595 in 6XC I thought it would be easy to show how I do it. It’s a Master Sporter with a T3 lite profiled 20” barrel- keep in mind it is a T3 LITE barrel. So by conventional “wisdom” it should be more picky and less accurate than a heavy barrel. His work is shoddy (), but I bet I can overcome it.

The rifle-


First was @Unknown Munitions factory load with 105gr Berger Hybrids. 5 rounds to zero, 5 for a...

• Formidilosus
• Replies: 1,060
• Forum: Reloading

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[fraz01]

I currently have 4 rifles using H4350. I'm running to different 8 LB lots of powder with 2 rifles and using up some 1# cans on a 2 other rifles. 30-06 AI and 6CM are on the 8# lots, powders were purchased when rifles were barreled. H4350 gives me good case fill and great consistency in velocity. I can usually get good velocity before pressuring out. Your swing in accuracy and pressuring up is definitely not the norm in my experience. I would move on

 

[NorthIdahoDude]

I was mostly trying to zero in on neck tension. Also have you read the Painless Load Development thread? Highly recommended.

Thread 'Painless load development (mine)'

Oct 25, 2021

I have had multiple people ask me to lay out how I do load development being that what I do is different. Since Shaen @Shooter71 just rebarreled a Tikka 595 in 6XC I thought it would be easy to show how I do it. It’s a Master Sporter with a T3 lite profiled 20” barrel- keep in mind it is a T3 LITE barrel. So by conventional “wisdom” it should be more picky and less accurate than a heavy barrel. His work is shoddy (), but I bet I can overcome it.

The rifle-


First was @Unknown Munitions factory load with 105gr Berger Hybrids. 5 rounds to zero, 5 for a...

• Formidilosus
• Replies: 1,060
• Forum: Reloading

• 

​

So basically, you are saying, seat the bullet to what's most convenient, pressure test to find max charge, and then load and shoot. To be fair, I agree in the sense that I have never had a gun that could not shoot a known good combo for squat that I ever got to shoot great with something else. But I have had more than a few that were 1.5 or so MOA that I could get down to 1 MOA by messing with seating depth and powder charge.

 

[NorthIdahoDude]

So basically, you are saying, seat the bullet to what's most convenient, pressure test to find max charge, and then load and shoot. To be fair, I agree in the sense that I have never had a gun that could not shoot a known good combo for squat that I ever got to shoot great with something else. But I have had more than a few that were 1.5 or so MOA that I could get down to 1 MOA by messing with seating depth and powder charge.

To follow up on that - for examples:

I have a a particular Rem 700 in 30-06 that will shoot a hair over 1 MOA all-day-every-day with Varget fueled 150 Accubond's seated at 3.340 OAL (which is still about .095 off the lands). At 3.30 OAL it shots near double that group size (and with H4350 and any depth, it's well over double that size).

My 7x57 likewise, seat it too far away from the lands, and it shoots like an accuracy problem, but get the bullet within about .050 of the lands, and it shoots pretty good. And this is my odd duck, in so far as I have only ever got H4350 to shoot well with this gun - nothing else is particularly good at all.