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GatorTrapper

Well-Known Member
Joined
Dec 29, 2020
Messages
121
Location
Florida
275 H&H Magnum problem.

It uses .278 bullets. My pet load of Woodleighs and 4320 over CCI magnum LRPs always works fine.

Ran low on .278s and no one has them. Found a box of 154 gr .274 Hornadys and loaded same load.

"Click". Ejected case, no bullet in it. Case was full of charred 4320 some loose, some in lumps.

The bullet was stuck in the throat and easily knocked out with cleaning rod.

Mystery to me.
 

243winxb

Well-Known Member
Joined
Sep 9, 2016
Messages
567
Location
USA
Lack of or to little neck tension/bullet hold. This allowed the bullet to move out of the case when the primer fired. Powder did not burn correcty as pressure was low or missing.

If the case neck can be sized smaller and not use the expander, the smaller diameter bullet may work? The bullet will ride on the lands and allow blow by of the hot gas. Not good.

Best to find the correct diameter bullets. https://ammoseek.com/
 

243winxb

Well-Known Member
Joined
Sep 9, 2016
Messages
567
Location
USA
I would place a back order with Midwayusa. https://www.midwayusa.com/bullets/b...&Ns=p_metric_sales_velocity%7C1&Ntpc=1&Ntpr=1

Screenshot_20210108-201712_Chrome.jpg
 

Welderboy250

Well-Known Member
Joined
Apr 19, 2013
Messages
102
Location
PA
I’m confused by some of the numbers. Maybe they are typos? Either way agree still sounds like too little resistance holding the bullet.
 

243winxb

Well-Known Member
Joined
Sep 9, 2016
Messages
567
Location
USA
Contaminated powder? Liquid left in case from washing? Spray lube used for sizing, getting into the case? Tumbling media left inside the case? Just a few more guesses.
 

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