.223 s.m.k 52 gn data

[sarge4318]

I don't think it'll matter too much if you keep to a similar charge weight and work from there.

But your assumption of a lighter bullet = lighter charge isn't necessarily the case. Most data I have suggests the lighter bullet has a heavier charge weight, all other things being equal. For example, with a 77gn bullet and CFE223 powder the suggestion is for around 22.5-24.5gn charge and a 53gn bullet is 27.0-28.5gn charge. I wouldn't go lower than the lowest 53gn suggested powder weight.

[kaboom]

From the info that is turning up it seems to keep the same as a low end 53 gn weight so think I will will do 10 x 52 gn at the same weight of powder as 53 gn.
27.5 gn of cff223 is the " optimal " weight for a 53 bullet and is bang in the middle

Will let you know the results

[DedIdick]

I doubt you'll notice much difference between the 53 & 52 gn load. I load 75 & 77 gn bullets with the same powder load. (both more accurate than me!)

[kaboom]

hope so with a £10 per 100 heads saving its going to be well worth it

[DedIdick]

Heads are the toilets in ships, bullets are the thingies that come fleeing out of the barrels of rifles.
Bullet, case, powder, primer. Case head is the bit that holds the primer and faces against the bolt. The case head usually has the headstamp imprinted in it.

[sarge4318]

Case head is the bit that holds the primer and faces against the bolt.

Which, oddly enough, is nowhere near the case shoulder.

[DedIdick]

Heads are the toilets in ships, bullets are the thingies that come fleeing out of the barrels of rifles.
Bullet, case, powder, primer. Case head is the bit that holds the primer and faces against the bolt. The case head usually has the headstamp imprinted in it.

Which, oddly enough, is nowhere near the case shoulder.

Or the neck...it's a topsy turvy world isn't it; this black art (I am allowed to say that am I?) of reloading!

[223AI]

Heads are the toilets in ships, bullets are the thingies that come fleeing out of the barrels of rifles.
Bullet, case, powder, primer. Case head is the bit that holds the primer and faces against the bolt. The case head usually has the headstamp imprinted in it.

Wrong.
The case head encompasses the base of the case, rim, extractor groove and up as far as the webb where it becomes the case body.

If you’re going to be a pedant at least get it right!

[DedIdick]

There's Pedants and then there's Pedantic Gits!