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Rifles, Reloading, Optics, Equipment
Reloading
New to the forum, 6.5-284 question
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<blockquote data-quote="Greyfox" data-source="post: 693031" data-attributes="member: 10291"><p>I own the same rifle and know three other people that own it as well. With the exception of extreme spreads and a small velocity difference you shouldn't see a material difference in pressure or accuracy using Lapua new vs fired and resized brass. Unless the gun fir some reason is out of spec, you should be able to shoot 53gr of 4831sc without pressure issues, for sure at 51.5 gr. The OAL cartridge length using 140 Berger VLD's, touching the lands should be 3.18"-3.29". I have found best results seating .075" off the lands. Also, neck OD should be .292". With new brass the neck should be expanded since new Lapua is .290", too tight and the seater may deform the bullet due to seating pressure. I have found that Federal 210 Match primers work best with H4831sc. You didn't mention what FL sizing dye you are using. I use a Redding competition dye and size .001- .002" under the fired case length. The expander in this dye brings the Lapua neck to .292" which is perfect for Berger 140 Hunting VLD's. I use a .292" bushing as well. A fired cas should be around .296" on the neck.these spects appear to be consistant with other LRH's I have seen. If it's radically different, I would suspect the rifle to be out of spec.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 693031, member: 10291"] I own the same rifle and know three other people that own it as well. With the exception of extreme spreads and a small velocity difference you shouldn't see a material difference in pressure or accuracy using Lapua new vs fired and resized brass. Unless the gun fir some reason is out of spec, you should be able to shoot 53gr of 4831sc without pressure issues, for sure at 51.5 gr. The OAL cartridge length using 140 Berger VLD's, touching the lands should be 3.18"-3.29". I have found best results seating .075" off the lands. Also, neck OD should be .292". With new brass the neck should be expanded since new Lapua is .290", too tight and the seater may deform the bullet due to seating pressure. I have found that Federal 210 Match primers work best with H4831sc. You didn't mention what FL sizing dye you are using. I use a Redding competition dye and size .001- .002" under the fired case length. The expander in this dye brings the Lapua neck to .292" which is perfect for Berger 140 Hunting VLD's. I use a .292" bushing as well. A fired cas should be around .296" on the neck.these spects appear to be consistant with other LRH's I have seen. If it's radically different, I would suspect the rifle to be out of spec. [/QUOTE]
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Reloading
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