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155smk .308 help!!!!!
fl23in
Member Posts: 404 ✭✭✭
ok i am just now trying to load just off my L&G (.020) and i am having a small problem i need advise on.
1 time fired FGMM brass i trimmed 300 all to same length of 2.0065, and my Ogive for my rifle is 2.3695 w/155smk (with hornady comparartor set and OAL gauge and case set), and when i load to 2.3500 i can put pressure on bullet (side to side) and it pops right out of case. i know i can load them deeper but what would cause the issue of not being able to set .02 off L&G?
i am loading per hornady 8th edition
neck sized only, all fired from my bolt gun, i am reloading to, .002 neck tension.
i did not have this prob loading .020 off with my 155 scenars (lapua)
1 time fired FGMM brass i trimmed 300 all to same length of 2.0065, and my Ogive for my rifle is 2.3695 w/155smk (with hornady comparartor set and OAL gauge and case set), and when i load to 2.3500 i can put pressure on bullet (side to side) and it pops right out of case. i know i can load them deeper but what would cause the issue of not being able to set .02 off L&G?
i am loading per hornady 8th edition
neck sized only, all fired from my bolt gun, i am reloading to, .002 neck tension.
i did not have this prob loading .020 off with my 155 scenars (lapua)
Comments
Bearing surface, not counting boattail.
Sounds like you will have to seat deeper just to keep the bullet in the brass through normal handling and loading.
How deep are they seated in the case neck?
Bearing surface, not counting boattail.
Sounds like you will have to seat deeper just to keep the bullet in the brass through normal handling and loading.
i would be shocked if it is more than .007 give or take
If you feel it necessary or worthwhile to load to that specific length, you may need to use a flatbase bullet or go to a heavier/longer bullet. Possibly look for a bullet with a shorter boattail allowing a longer bearing surface.
yea as i said i dont have this prob with 155 lapua pills, but i dont like being set to 1 bullet/powder setup, and wanted to try smk, but i dont think i will be able to load any less than .040 off L&G to feel "safe". i do plan on doing more bullet weight, style, design over time
what is the OAL of your loaded round, when seated at .020" off?
SMK's tend to be, by my experience, shorter in the bearing surface dept, with a somewhat longer boat tail.
If you say that when you push them side to side, and they come out, that can be several things. 1 it is not seated deep enough (hence your question) 2 there is not enough neck tension (how much neck tension do you have?) and 3 you annealed the necks past the point where the brass becomes wayyy too soft (I assume since you didn't mention annealing, that this is not your issue)
Have you held a bullet up next to a loaded round to get an idea of how much bearing surface is in the case neck? I assume this is a factory barrel we are talking about?
One ragged hole doesn't happen all that often. I'd gather up lots of those components and be done looking for a load for that rifle.
not to be rude but it does happen ALOT, i have 5 loads now diff powders/bullets it likes, this is first 155 smk i am trying to load out.
i have 3 loads i can shoot 20+ rounds non stop only to reload single round at a time, all inside the size of a quater.
so are you saying that the bullet is seated into the case neck by only .007"?
what is the OAL of your loaded round, when seated at .020" off?
SMK's tend to be, by my experience, shorter in the bearing surface dept, with a somewhat longer boat tail.
If you say that when you push them side to side, and they come out, that can be several things. 1 it is not seated deep enough (hence your question) 2 there is not enough neck tension (how much neck tension do you have?) and 3 you annealed the necks past the point where the brass becomes wayyy too soft (I assume since you didn't mention annealing, that this is not your issue)
Have you held a bullet up next to a loaded round to get an idea of how much bearing surface is in the case neck? I assume this is a factory barrel we are talking about?
yes roughly only .007 AT BEST seated in the neck. off the top of my head the OAL seat at .020 was 2.9270 give or take .005 due to bullet inconsitancy. Neck tention is .0015 or .3065 ID at case neck. No i dont annel. Yes i have held up next to pill tto loaded case and it is roughly right above boat tail NOT BY MUCH. Yes factory barrel
Seat the bullets deeper
or pull the barrel and shorten the throat
you have a choice to make:
Seat the bullets deeper
or pull the barrel and shorten the throat
yea i seated them deaper, and the gun is going to SPR in naples FL in a few months for rebarreling, action trueing and whole 9 yards
I think I would shoot the five known good loads til the barrel wore out, THEN rebarrel with a shorter throat.
yea that is kinda what i am doing, but i have ot been loading close enough to L&G. basically i am almost getting over pressure due short seating because of long throat (flattened primmers), so i am trying to load out to lessen the PSI.