38-55 with 220 gr hornady fp issue ?

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Keithjohn

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I have found a small amount of info on this cartridge with the 220gr hornady flat point . I've an OLD win 94
That I want to shoot . So I want to be nice to it . I'm trying imr 3031 at 31.0 grains 3 shots tried seems all good but the primers came out maybe 20thou on all 3 . Thought maybe I dear loaded it so tried 1 @ 33.0 gr
Still shoots good but same result on the primer

These were one time fired brass from new factory load also fired in this gun

I don't like the primers sticking out , maybe I need new brass ? But fired once by me

Any other loads guys tried ?
 
Could be a slight headspace issue........nothing to worry about.In the Hornady book# 6th Edition with the 220gr OAL 2.620".............30.9gr of IMR3031 -1500fps. 32.8gr-1600fps. 33.7gr-1650fps and MAX 34.7gr-1700fps all from a 16" barrel carbine. Primer WLR
 
mbogo3 said:
Could be a slight headspace issue........nothing to worry about.In the Hornady book# 6th Edition with the 220gr OAL 2.620".............30.9gr of IMR3031 -1500fps. 32.8gr-1600fps. 33.7gr-1650fps and MAX 34.7gr-1700fps all from a 16" barrel carbine. Primer WLR
Click to expand...

Thanks for this . I'm kind of new to levers and old guns , I wondered about headspace , you say not to worry ?
 
Found my answer I think , same applies to 38-55 maybe ?

Anyone who makes workup loads starting at the suggested start load will have protruding primers. And the primers will protrude until the chamber pressure is great enough to push and stretch the case back into the bolt face.

Below is a photo posted in the British Target Shooter Magazine by Laurie Holland. And the cases were fired in a older Mauser rifle and have the primers protruding. The sentence below are Laurie Holland's own words.

(the loadings not being hot enough to fireform/stretch the brass fortunately).

[​IMG]

And since the 30-30 chamber pressure is not great enough to make the case stretch. The only way to measure and check the shoulder location is with a fired case measuring from the base of the primer to its shoulder. And not measuring from base of the case with the primer removed.

And since the 30-30 headspaces on its rim and the cases do not stretch to meet the bolt face the shoulder location is not critical.
 
Keithjohn said:
I have found a small amount of info on this cartridge with the 220gr hornady flat point . I've an OLD win 94
That I want to shoot . So I want to be nice to it . I'm trying imr 3031 at 31.0 grains 3 shots tried seems all good but the primers came out maybe 20thou on all 3 . Thought maybe I dear loaded it so tried 1 @ 33.0 gr
Still shoots good but same result on the primer

These were one time fired brass from new factory load also fired in this gun

I don't like the primers sticking out , maybe I need new brass ? But fired once by me

Any other loads guys tried ?
Click to expand...

hey mate i get this quite often in the 375 BB with 220 hornady or even the 245 cast, i thiiink it could be lightish loads per say?? im not too fussed about it though.. i use ADI AR2207 an about 30 gr for 220 an 28 for 245gr --- i kind of treat mine as a "Hot 38-55" , i sayt it alot, but its truth, it aint no full power 375 which could be around 2100 with the 220, instead im around 1800-1850 at best i rekon , both shoot to the same poi to use to 100, 150 and just plink 200 with peep sight
 
Keithjohn said:
Found my answer I think , same applies to 38-55 maybe ?

Anyone who makes workup loads starting at the suggested start load will have protruding primers. And the primers will protrude until the chamber pressure is great enough to push and stretch the case back into the bolt face.

Below is a photo posted in the British Target Shooter Magazine by Laurie Holland. And the cases were fired in a older Mauser rifle and have the primers protruding. The sentence below are Laurie Holland's own words.

(the loadings not being hot enough to fireform/stretch the brass fortunately).

[​IMG]

And since the 30-30 chamber pressure is not great enough to make the case stretch. The only way to measure and check the shoulder location is with a fired case measuring from the base of the primer to its shoulder. And not measuring from base of the case with the primer removed.

And since the 30-30 headspaces on its rim and the cases do not stretch to meet the bolt face the shoulder location is not critical.
Click to expand...

welll farkkk me..... il load em back up a bit then !!!!
 
Load some up a little warmer and see if the primers are still backing out.I knew a guy that had a 1894 in 30-30 that had backed out primers with factory ammo .
 
I'm not sure I agree with all the "it's all right" crowd here, any round that produces 15000 lbs of pressure should re-seat a primer and every load mentioned should exceed that easily.

I would do a rudimentary headspace test on the rifle to begin with...use an empty cartridge with a new primer in it and fire it. The case will have no back-pressure at all on it and the pressure of just the primer detonating will create enough pressure between the flash hole web & the primer itself to move it back as far as the bolt face will allow...if primer is more than the 20 thou. proud already stated, I would take steps to reduce headspace.
 
Keithjohn said:
I should have mentioned the factory loads did not have the issue

I'm going to up the load slowly ,, I'll update , might be a few days
Click to expand...

yeah , same story here..
an il be watchin for ya reply, im not really due to load any but im goin to keep it in mind for next loading time
 
Keithjohn said:
I should have mentioned the factory loads did not have the issue

I'm going to up the load slowly ,, I'll update , might be a few days
Click to expand...

comnig to think of it i would be intrested to know how much more it took until the primers start to look normal, i load mine as is dueto the sight setup, so i cant really go too much hotter, although pending your outcome, a few gr is minor, alot is diffeerent :)

ive been busy an not shot anything of late
 
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