trouble with .17fb

[luke wady]

hi ,
i have been having trould with .17fb R-P brass ,
i had three brand new case's suffer case head separation,
is there a bad batch

thanks

[ab_bentley]

Too much headspace? Adam

[ab_bentley]

I should have elaborated, when you load your ammo do you FL size, and if you do how much are you pushing the shoulders back? When I has my first 17M4 I did just that, and it did just what you are describing. Especially with hot loads. Adam

[luke wady]

its new brass. full lenght sized for first firing,
30 gr berger ,h322 17.5gr and fed 205 primer,
head space is on short side( bolt just closes on go guage)
and it only been 3 case lost out of 35 and one with only 16.4gr of h322
no pressure signes

hope this shed some light on my problem

that for reply guys

[trotterlg]

Just because the head space of the rifle is correct doesn't mean the headspace on your brass is correct. Check how much head space your sized brass has when it is chambered. Larry

[luke wady]

Originally Posted by trotterlg

Just because the head space of the rifle is correct doesn't mean the headspace on your brass is correct. Check how much head space your sized brass has when it is chambered. Larry

thanks Larry
you hit nial on head the new brass is .024'' short at shoulder, than go guage.
i will set sizing die to only bump .003''
but look like ill have to loss a few till they fire formed,

next lot of case will be made form .223 lapua brass

[ab_bentley]

Originally Posted by luke wady

next lot of case will be made form .223 lapua brass

Don't waste your money, use Winchester or Lake City if you can find it. Adam

[luke wady]

Originally Posted by ab_bentley

Don't waste your money, use Winchester or Lake City if you can find it. Adam

i would use imi but not seen any in uk for last few years and there not much in it between lapua and winchester here only lake city here is once fired,
if iam forming case i like to use new ones

[night Stalker]

Luke Ian may have some 223 IMI brass in, I got mine from him. I'll ask him tomorrow.

Rick

[rick w.]

One could consider using the false shoulder approach. Expand the neck up a ways, and use the sizing die for a crush fit in the particular rifle for the initial fireform..