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Reloaders - top tips for gaining accuracy


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Consistancy, all they way :good:

 

Keep notes of everything that you do in the reloading room, seating depth, charge weight, bullet weight, targets, load count per case.velocity,neck tension, basicly keep a record of all you do.

 

As Dougy states record and store all your actions, note it all down.

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Good case prep can go a long way too.

Measure you chamber and your col on your rifle.

Most chambers a way over spec !

 

Good point, just checked mine in at 52.4 on my .243 but they are trimmed at 51.8 using a standard Lee tool. How much difference will 0.6mm undersize for my chamber make to accuracy?

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After finding your suitable powder and load, perhaps simply consistency is best.

I have heard that seating the bullet just off the lands gives a progressive rather than a start, stop, start to the progress of the bullet. That would seem to provide a better approach.

Type of bullet - I like the BC of Vmax.

Then theres twist rate.

I find my homeloaded rounds are more consistent than I am.

 

Then there's practice.

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Good point, just checked mine in at 52.4 on my .243 but they are trimmed at 51.8 using a standard Lee tool. How much difference will 0.6mm undersize for my chamber make to accuracy?

I don't have any figures but it's to do with having more neck length and the ability to set bullets further out. Whilst retaining enough baring surface in the neck wich should be about the diameter of the bullet. ish ;)

Plus not having to trim every 5 mins. ;)

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All of the above are worth considering but don't try to invent the wheel. Best tip I can give being member of gun club is to ask more experienced with same rifle as you what load they use for target or game. No two rifles of same make and calibre will shoot the same with same load (all down to barrel harmonics). Once you have your chosen load based on advise and loading manual, tweek the load (velocity) and jump (col) up or down and check groups till you get your sweet load for your rifle, takes time and patience but if you are anal about accuracy that's the best advice. Also don't forget lots of trigger time on the range will do wonders for your groups.

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You know Jump comes up more than it should when talking factory guns in my mind. I have become totally convinced in recent years that Jump in such rifles and hunting bullets is only likely to improve accuracy if deeper seating creates greater run out levels or effects the mental side of making a great shot ( I think many might be amazed at what their best load really is if shot as a blind test at a proper distance). The bullets often talked about don't even have the tolerance on the "curve radius" to maintain a set jump length using the easy to follow word rather than the correct name here..

Factory guns are made generous so people cant ram bullets hard into the rifling and create too high a chamber pressure, cant prove the accuracy thoughts can only offer up in evidence so many bullets that stand so far off the rifling and still shoot extremely well (thinking 55 -58 grn .243 etc). Some High BC target bullets are very Jump intolerant but these will rarely be shot from a mag fed factory hunting rifle anyhow

I know its a well worn theory but try it with an open mind, I did :good:

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don't buy cheap s**** and expect the world, the best brass and dies and primers etc all help.brass prep ,decent scope ,clean barrel.a collective group of many many things .i drive a cheap car and never go on holiday so i can get better kit :good: i'm that sad :ninja:

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ignore what everyone else loads in their rifle

your rifle, your loads, your components will respond totally differently to theirs

 

ignore the land kissing loads unless you are shooting benchrest with a custom barrel/chamber

all my loads start with a minimum seating depth of at least a calibre depth and they only get deeper!

 

neck tension!

doesn't matter how you achieve it

make it consistent

reaming, turning, crimping etc etc

 

don't over think it.

chances are these are hunting loads

most people can't recreate load testing accuracy on their part when in the field!

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don't buy cheap ***** and expect the world, the best brass and dies and primers etc all help.brass prep ,decent scope ,clean barrel.a collective group of many many things .i drive a cheap car and never go on holiday so i can get better kit :good: i'm that sad :ninja:

lol

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Consistancy, all they way :good:

 

Keep notes of everything that you do in the reloading room, seating depth, charge weight, bullet weight, targets, load count per case.velocity,neck tension, basicly keep a record of all you do.

 

Totally agree, read your manual from front to back, get the fundamentals right and get it right on the paper, sometimes we expect too much from off the shelf hunting rifles, it you decide you want more accuracy in the future then you will need a barrel ( and the skills ) that can do it.

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Best bit of kit you can get for accuracy is the lee factory crimp die .

 

Harnser

 

I can and cannot agree. You see I have a theory that the crimping die trues up the bullet in the case making it more concentric to the bore and I think Bench rest chamber type dies do this even better again. Always fancied setting up a Lee Crimp die and Std quality die then BR chamber type hand die and measuring the run-out with a DTI on a fair test to prove that one.

What I do not think is the crimp in itself helps via the grip though it is a think

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2.093 less than 0.5 inch groups tried tested too many times

2.083 shoots 0.75 inch groups again tried and tested.

2.073 over 0.75 inch again tried and tested

 

The proof is on the paper. Nothing more to add.

 

Dougy,

If we are talking std factory hunting bullets it might blow your "proof" apart even with a custom cut chamber if you actually took the real dimensions of the bullets through a box. 20 tho' is not unknown. I am not doubting your results on paper just why they occurred. I have stated many times on here and always get some amount of flack for it but 100 yards testing I haven't got a lot of faith in anymore, bullets can loose stability after that point some I have noticed very markedly so - I assume as you don't mention otherwise that these are at 100 as lets face it 1/8 of MOA at 200 aint shout about different and these groups shot at 300 are all darn good.

Seriously if you have capable measuring kit measure those bullets and see

Edited by kent
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