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Rifles, Reloading, Optics, Equipment
Reloading
reloading 300wm questions
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<blockquote data-quote="gspman" data-source="post: 646843" data-attributes="member: 26636"><p>I have just started reloading again after 25 years, So Iam esentially a newby again.</p><p>I have a rem700 xcr w/26in tube - 300 wm. I would like to start shooting LR in the future with this rifle as well as western big game.</p><p>Factory ammo grouped 1.25" to 2in and i was never happy with that.</p><p>I measured my chamber with a hornady O.A.L gauge and found it to be 2.968",</p><p>I measured a fire formed case and set up my sizer die (RCBS)to set the shoulder .002" back. Cases chamber in the rifle w/almost no bolt torque when camming over.</p><p> </p><p>I seated the accubond 180 to 2.40...just sort enough to work thru the magazine reliably.</p><p>Started my loads at 71.5gn of H4831SC thru what my hornady book stated as a max load of 74.3gn.</p><p>I got a nice 3/8" grouping at 73 gns. My measured velocity is only avg 2860fps. avg dev of 12 fps over a 5 shot string.</p><p>Isn't this avg velocity low for that much powder? measured with my master chrony 10ft from the muzzle.</p><p>I have no signs of overpressure at all even after a 2nd reloading of the same load with same amount of powder.</p><p>If i decrease the jump to lands distance, will this increase my velocity? I know it should increase the pressure some?</p><p>Should just increase my powder charge until another sweat spot is found with out causing pressure signs?</p><p>I am not sure which direction I should follow at this point. I want this round to be right around 3000 fps to allow easier scope dialing.</p><p>Also i do not have any type of special crimping on the bullet. Just neck tension at this point. A buddy told i should put a roll crimp on and that will increase pressure and increase velocity??? t/f</p><p> </p><p>Apoligies for the long post </p><p> </p><p>Regards</p><p>gspman</p></blockquote><p></p>
[QUOTE="gspman, post: 646843, member: 26636"] I have just started reloading again after 25 years, So Iam esentially a newby again. I have a rem700 xcr w/26in tube - 300 wm. I would like to start shooting LR in the future with this rifle as well as western big game. Factory ammo grouped 1.25" to 2in and i was never happy with that. I measured my chamber with a hornady O.A.L gauge and found it to be 2.968", I measured a fire formed case and set up my sizer die (RCBS)to set the shoulder .002" back. Cases chamber in the rifle w/almost no bolt torque when camming over. I seated the accubond 180 to 2.40...just sort enough to work thru the magazine reliably. Started my loads at 71.5gn of H4831SC thru what my hornady book stated as a max load of 74.3gn. I got a nice 3/8" grouping at 73 gns. My measured velocity is only avg 2860fps. avg dev of 12 fps over a 5 shot string. Isn't this avg velocity low for that much powder? measured with my master chrony 10ft from the muzzle. I have no signs of overpressure at all even after a 2nd reloading of the same load with same amount of powder. If i decrease the jump to lands distance, will this increase my velocity? I know it should increase the pressure some? Should just increase my powder charge until another sweat spot is found with out causing pressure signs? I am not sure which direction I should follow at this point. I want this round to be right around 3000 fps to allow easier scope dialing. Also i do not have any type of special crimping on the bullet. Just neck tension at this point. A buddy told i should put a roll crimp on and that will increase pressure and increase velocity??? t/f Apoligies for the long post Regards gspman [/QUOTE]
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Reloading
reloading 300wm questions
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