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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.375 Norma
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<blockquote data-quote="Swamplord" data-source="post: 931927" data-attributes="member: 2460"><p>All I did was run the 338 Norma Mag cases through a 375 expander and fire formed with a mild 375 Ruger load...... cases should not have been affected as the shoulder still needs to sharpen up a bit,</p><p>alternatively you can run the case neck up to .400" then size down to .375" far enough to create a headspace shoulder and use the cream of wheat fire forming method, I did not have an expander that size and did not want to work the case neck too much by expanding to .416" and back down again......</p><p></p><p>Just for reference I necked up the 338 NM and 338 LM cases up to 375 and checked for case water capacity...... the 375-338 Norma still leaves the 375 Ruger in the dust dragging arse...... fire forming to the 375 PRO gained 6.4 gr more, further widening the gap......</p><p></p><p>the 375-338 Lapua is identical in capacity to the 375 RUM, </p><p> ... note that these are new unfired cases just necked up to 375, fired cases would show slightly more.... improving the 375-338 Lapua case will yield about 8-12 gr more ...depending on body taper, neck length and shoulder angle.... but running the long high bc Cutting Edge bullets will have to be single shot as they are too long for the AICS cip length mags, seating the bullet deeper will reduce the capacity and bring it closer to the 375 PRO.... all this was taken into consideration and I went with the 338 Norma Mag over the 375 RUM and 338 Lapua for my wildcat...</p><p></p><p> Norma and Jamison make 338 Norma brass and if need be I can make brass from 338 Lapua cases by cutting the neck off and sizing down to .375" far enough to chamber and cow banging it then turning the neck down to proper dimensions...</p><p></p><p>theres numerous manufacturers making 338 Lapua Mag brass</p><p>the excellent Lapua stuff</p><p>Norma, Nosler, Jamison, Hornady all make the stuff and theres HSM and Horneber if ya can find it.... also available is Swedish RUAG once fired brass and Lapua made Military brass .... all you need to do is PAY for it, lol!</p><p>........</p></blockquote><p></p>
[QUOTE="Swamplord, post: 931927, member: 2460"] All I did was run the 338 Norma Mag cases through a 375 expander and fire formed with a mild 375 Ruger load...... cases should not have been affected as the shoulder still needs to sharpen up a bit, alternatively you can run the case neck up to .400" then size down to .375" far enough to create a headspace shoulder and use the cream of wheat fire forming method, I did not have an expander that size and did not want to work the case neck too much by expanding to .416" and back down again...... Just for reference I necked up the 338 NM and 338 LM cases up to 375 and checked for case water capacity...... the 375-338 Norma still leaves the 375 Ruger in the dust dragging arse...... fire forming to the 375 PRO gained 6.4 gr more, further widening the gap...... the 375-338 Lapua is identical in capacity to the 375 RUM, ... note that these are new unfired cases just necked up to 375, fired cases would show slightly more.... improving the 375-338 Lapua case will yield about 8-12 gr more ...depending on body taper, neck length and shoulder angle.... but running the long high bc Cutting Edge bullets will have to be single shot as they are too long for the AICS cip length mags, seating the bullet deeper will reduce the capacity and bring it closer to the 375 PRO.... all this was taken into consideration and I went with the 338 Norma Mag over the 375 RUM and 338 Lapua for my wildcat... Norma and Jamison make 338 Norma brass and if need be I can make brass from 338 Lapua cases by cutting the neck off and sizing down to .375" far enough to chamber and cow banging it then turning the neck down to proper dimensions... theres numerous manufacturers making 338 Lapua Mag brass the excellent Lapua stuff Norma, Nosler, Jamison, Hornady all make the stuff and theres HSM and Horneber if ya can find it.... also available is Swedish RUAG once fired brass and Lapua made Military brass .... all you need to do is PAY for it, lol! ........ [/QUOTE]
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.375 Norma
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