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Rifles, Reloading, Optics, Equipment
Reloading
Reloading for a Browning BAR 300 Win Mag
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<blockquote data-quote="blvette75" data-source="post: 1989334" data-attributes="member: 72440"><p>I don't reload your bullet weights but a bit heavier 180-200 grain. But if you post what you wind up with will give it a try.</p><p></p><p>Due to shortage of H1000 been playing around a bit, have found although you may be able to effect the accuracy with the BOSS tuning, found that my BAR 300 win mag likes a COAL of between 3.310 and 3.325, I don't have a BOSS on mine. I found for ejection and feeding I keep my Brass between 2.6050 and 2.6150. I neck size with a Lee and use a Redding body die and have moved away from my Lee seating die now use an RCBS comp die. I may go back to full sizing but currently this appears to work for me. When I purchased my BAR I had stopped reloading for a while and had compared box ammunition when I bought the rifle a few years back. Had recorded COAL and velocity on these different ammo to see what fed and ejected well, and what gave me the best accuracy tried 9 different brands some times multiple weights and types of bullets. For whatever reason my BAR prefers the Remington green 180 grain Core-lokt stuff was consistently shooting about 0.5" 3 shot groups at 100 yards, three different boxes. The Remington Green box were all below COAL target about 3.320 or less none above 3.325. Only three gave consistent sub MOA three shot groups, the Remington, the Nosler ammo in the following paragraph and Federal Premium180 grain accubond. Had old boxes Red box Winchester 150 grain Deer ammunition was also sub-MOA but only shot one group saving these boxes for whitetail, very old boxes(about 20 years old).</p><p></p><p>Had bought some custom Nosler 200 grain accubond ammunition that my BAR shot well the COAL measured 3.310-3.320 on those and grouped about 50-.75 inches at 100 yards, trying to get better using H4831 and H4831SC not 100% decided but H4831- target looks best at like 69 grain targeting 2800 fps like the Nosler custom. The BAR did not shoot well the Hornady Precision Hunter 200 grain ELD-x, at a COAL of 3.340- speed at-2860 +/- 30 fps grouped about 1.5" and above. For my current loads I am using the federal 215 primers, brass is Federal Prime hunting and trying my blue box federal brass that was a bit of work to size it to match the Prime hunting brass will see how the primer pockets hold up. The next loads will use the Nosler Brass and Hornady Brass.</p><p></p><p>Also loading 180 grain partition bullets had good luck with these in my Savage the BAR replaced the Savage, original load was 78 grains of H1000 same Brass as above, primers are now with WLRM but may switch back to federal 215. Had two of these old rounds left. When I shot those through the BAR they were touching and hit dead center after scope setup was completed. Currently trying the (cannot find H1000) H4350 and IMR 4350 targeting the Load for 180 grain bullet at a 2980fps velocity had with H1000 out of the Savage. So far best H4350 was 69 grains, and IMR4350 was 68.5-69 grains weighing in grams so converting back to grains for this blog. IMR seemed more accurate but could be me. Will try the Remington green box Brass next, for the next group of loads, so Far accuracy hovering at 1 MOA, a better shooter would probably do better the BAR trigger is heavier than I am used to mine measures about 4,5lbs, I typicaly use a 3.5-3 lb trigger or less on my rifles.</p><p></p><p>Had my barrel threaded to 5/8 x24 a BOSS is a different thread found out recently since I finally found a vendor that carries the BOSS so looking for a tuner brake with the 5/8 x 24 thread.</p></blockquote><p></p>
[QUOTE="blvette75, post: 1989334, member: 72440"] I don't reload your bullet weights but a bit heavier 180-200 grain. But if you post what you wind up with will give it a try. Due to shortage of H1000 been playing around a bit, have found although you may be able to effect the accuracy with the BOSS tuning, found that my BAR 300 win mag likes a COAL of between 3.310 and 3.325, I don't have a BOSS on mine. I found for ejection and feeding I keep my Brass between 2.6050 and 2.6150. I neck size with a Lee and use a Redding body die and have moved away from my Lee seating die now use an RCBS comp die. I may go back to full sizing but currently this appears to work for me. When I purchased my BAR I had stopped reloading for a while and had compared box ammunition when I bought the rifle a few years back. Had recorded COAL and velocity on these different ammo to see what fed and ejected well, and what gave me the best accuracy tried 9 different brands some times multiple weights and types of bullets. For whatever reason my BAR prefers the Remington green 180 grain Core-lokt stuff was consistently shooting about 0.5" 3 shot groups at 100 yards, three different boxes. The Remington Green box were all below COAL target about 3.320 or less none above 3.325. Only three gave consistent sub MOA three shot groups, the Remington, the Nosler ammo in the following paragraph and Federal Premium180 grain accubond. Had old boxes Red box Winchester 150 grain Deer ammunition was also sub-MOA but only shot one group saving these boxes for whitetail, very old boxes(about 20 years old). Had bought some custom Nosler 200 grain accubond ammunition that my BAR shot well the COAL measured 3.310-3.320 on those and grouped about 50-.75 inches at 100 yards, trying to get better using H4831 and H4831SC not 100% decided but H4831- target looks best at like 69 grain targeting 2800 fps like the Nosler custom. The BAR did not shoot well the Hornady Precision Hunter 200 grain ELD-x, at a COAL of 3.340- speed at-2860 +/- 30 fps grouped about 1.5" and above. For my current loads I am using the federal 215 primers, brass is Federal Prime hunting and trying my blue box federal brass that was a bit of work to size it to match the Prime hunting brass will see how the primer pockets hold up. The next loads will use the Nosler Brass and Hornady Brass. Also loading 180 grain partition bullets had good luck with these in my Savage the BAR replaced the Savage, original load was 78 grains of H1000 same Brass as above, primers are now with WLRM but may switch back to federal 215. Had two of these old rounds left. When I shot those through the BAR they were touching and hit dead center after scope setup was completed. Currently trying the (cannot find H1000) H4350 and IMR 4350 targeting the Load for 180 grain bullet at a 2980fps velocity had with H1000 out of the Savage. So far best H4350 was 69 grains, and IMR4350 was 68.5-69 grains weighing in grams so converting back to grains for this blog. IMR seemed more accurate but could be me. Will try the Remington green box Brass next, for the next group of loads, so Far accuracy hovering at 1 MOA, a better shooter would probably do better the BAR trigger is heavier than I am used to mine measures about 4,5lbs, I typicaly use a 3.5-3 lb trigger or less on my rifles. Had my barrel threaded to 5/8 x24 a BOSS is a different thread found out recently since I finally found a vendor that carries the BOSS so looking for a tuner brake with the 5/8 x 24 thread. [/QUOTE]
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Reloading for a Browning BAR 300 Win Mag
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