Copy A Factory Bullet?

waynewjw

waynewjw

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So after reloading for my Sako 270 and getting the process figured out (now fine tuning the gns) to which is the most accurate. Next up is fine tuning 140 gns for my Browning.

So can I cheat by taking the Federal 140 gr Accubond load, put it into my puller and then weigh the grns. I know the bullet, I've got the primers and I might be able to determine which pwdr. mfg. by the shape of the gns. i.e. if the weight of the gns. in the factory load is say....56.5 gns. is that a good starting point without loading 50 rounds in various combo's to find the perfect load????
 
waynewjw said:
So after reloading for my Sako 270 and getting the process figured out (now fine tuning the gns) to which is the most accurate. Next up is fine tuning 140 gns for my Browning.

So can I cheat by taking the Federal 140 gr Accubond load, put it into my puller and then weigh the grns. I know the bullet, I've got the primers and I might be able to determine which pwdr. mfg. by the shape of the gns. i.e. if the weight of the gns. in the factory load is say....56.5 gns. is that a good starting point without loading 50 rounds in various combo's to find the perfect load????
Click to expand...

Very bad idea.
You have no idea what type of powder they use in the factory loads, other than it will be slow burning.
 
H4831 said:
Very bad idea.
You have no idea what type of powder they use in the factory loads, other than it will be slow burning.
Click to expand...

+1.

Commercial loads will be right at SAAMI maximums and the manufacturers have access to powders that are not available to reloaders.

OP, the only way to develop a load is to start low and work up while looking for accuracy nodes. All rifles are different and yours may reach maximum pressures before a book maximum is reached. The only way to find out is to start from scratch with each gun and find out what it likes through testing.

Mark
 
The powder used in factory ammo may, in fact, be very close to a commercially available number, but will seldom be spot on.
The factories will buy lots of powder from the manufacturers that have been tested to the standards needed, but usually are not exactly the same as the stuff we have access to.
They simply test it, and adjust their charge to attain the SAAMI specs they want, then load it up till that lot is gone. The next lot they get will likely be slightly different again. Eagleye.
 
Follow my plan of eating at every KFC for next ten years and be friend with every employee so they will divulge the recipe. Eleventh year , I came too close but got minor heart attack - Lol
 
copying is possible in some cases (but not the best idea as previously explained)....the best example is Hornady's loading for 6.5 Creedmore....they actually published what they used and it was commercially available powder.....I believe it was one of the 4350's .

edit: from article: http://demigodllc.com/articles/6.5-creedmoor-260-done-right/

The recipe to exactly duplicate the factory loads would be printed on every box of ammunition from Hornady. The powder used in the factory loads is H4350 and the primer is the Federal 210M Match.
 
When Speer was selling Nitrex ammo (Grand slam bullets in nickel plated cases) I emailed them and they told me "how to very closely replicate" the load

Try emailing the manufacturer and see what they say.......
 
Good To Know

Who'd thunk, emailing the factory and finding out if they will provide the info. for a great reload. Definitely need to follow up on that suggestion.

I've got my favorite factory loads for a number of calibers and it would be great to, of course, replicate that load with a reload. I know that half the fun is trying out different things, but in powders alone a guy could spend a small fortune, find out it doesn't work well and never use it again.
 
Biggunners said:
Follow my plan of eating at every KFC for next ten years and be friend with every employee so they will divulge the recipe. Eleventh year , I came too close but got minor heart attack - Lol
Click to expand...

The shlubs at KFC don't know either. I had a friend who was a schlub at KFC, he told me, the secret spices, just come in a big bag marked "colonels secret spice."

Now if you could find the guy who puts it in the bag, you're golden.
 
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