300 Holland and Holland

sharp shooter

sharp shooter

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Hi all,

I will be loading for 300 H&H soon. What is the deal with brass life with this round? I know it actually headspaces off the belt unlike most belted mags and that I should resize it as least as possible. How many loadings should I expect with minimal FL sizing and regular annealing of that ###y little neck and nimble shoulder?

Is a collet die worth it? How about a Larry Willis die?
 
I can not help with your other concerns, but have a bit of experience now with the Larry Willis die. It will resize about 1/8" or less of the case, immediately in front of the belt - that is all that it will do - where a normal Full Length die does not have much effect. I have several belted magnum rifles that I reload for - each has had factory ammo or new brass to start with - I never needed it for them. Until I bought some previously fired Norma 300 Weatherby brass. Fired at least once in somebody else's chamber. I full length sized them in an RCBS die - not a single one would chamber in my new-to-me 300 Weatherby rifle. Once that Larry Willis die showed up - one by one, every one of them failed that little built in gauge on top. So a tube of Extreme Pressure grease, and set to re-sizing them - they work perfect, now. So, as has been posted by others, maybe you will never need to use it. But when you do need to use it, I know of no other way to deal with the issue, except to discard the brass and buy new ones to replace.
 
Potashminer has it right. When you full length resize used brass from another rifle you most likely will need the Willis collet die because the brass is pulled down the case and gathers just above the belt and prevents the resized case from chambering in your rifle, The Willis die squeezes the portion above the belt enough past original that when relaxed it's spot on and will chamber.

I don't run my die all the way down when reloading for 300 H&H, fired from my rifle, and so far the cases have fared quite well.
 
I have the Larry Willis collet die and it's not meant to resize a brass case. The Willis die is used after the full length die is used on the case, only if it does not chamber after the full length die is used.
As for case life, traditional procedures apply when reloading: reduced case life is caused by many full length resizing, excessive powder charge and non-annealing.
 
I use 70gr of RE#22 /180gr Partition/Win brass/Fed LRM primer .292" 3 shot group at 100 yards out of a 26" pre 64 model 70.
 
sharp shooter said:
Hi all,

I will be loading for 300 H&H soon. What is the deal with brass life with this round? I know it actually headspaces off the belt unlike most belted mags and that I should resize it as least as possible. How many loadings should I expect with minimal FL sizing and regular annealing of that ###y little neck and nimble shoulder?

Is a collet die worth it? How about a Larry Willis die?
Click to expand...


All belted mags headspace off the belt unless you neck size after the first firing, only then will they headspace off the shoulder. I resize my H&H brass just like any other magnum and only size the neck. The difference with the H&H is that since it basically has no shoulder then you will want to check case length more often to ensure they don't get too long.
 
Buckmastr said:
Hornady brass is what I’m using. I’m not pushing it hard so it should last me.
Click to expand...

I've pushed that brass, as you know, with my 270 Winchester "Magnum"........a few got tossed. However, Peterson Brass was found, tested and proven to be a superior brass for accepting higher pressures along with other attributes, followed by Nosler. I'm using Nosler brass for my 300 H&H which is superb..........it truly is a custom brass! With only weighing them, (275 cases) they were only 0.8 of 1 grain of extreme spread in weight.
 
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Its impossible to absolutely predict case life or fit. Theres big chambers and small chambers, big dies and small dies. Set your die to the shell holder and back it off a turn. Eventually they might start chambering hard, screw your die in until it doesn't.

Anything else is a guess.
 
Dogleg said:
Its impossible to absolutely predict case life or fit. Theres big chambers and small chambers, big dies and small dies. Set your die to the shell holder and back it off a turn. Eventually they might start chambering hard, screw your die in until it doesn't.

Anything else is a guess.
Click to expand...

I lose cases due to loose primer pockets. You can predict that if your loading near or over max loads.
 
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