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Rifles, Reloading, Optics, Equipment
Reloading
Ran into signs of pressure sooner than expected with .300WSM. Need input
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<blockquote data-quote="Dentite" data-source="post: 1003685" data-attributes="member: 84845"><p>Hey gang,</p><p> </p><p>I've been a bit of lurker and finally registered. First post.</p><p> </p><p>I got a Browning X bolt in .300 WSM recently I just shot it for the first time this weekend. I picked loads below published data limits and was surprised to see some signs of overpressure.</p><p> </p><p>I loaded two batches, all with new Win brass, CCI magnum primers, Barnes 168 TTSX. Loaded to just fit in the magazine (which happened to be 0.020 off the lands).</p><p> </p><p>I loaded some sighters and then some increasing powder charges to find out when I ran into pressure signs so I could know my upper limit and start developing an accurate load.</p><p> </p><p>First batch was H4350. Hodgdon lists 61.0 as a start with a velocity of 2908 and a max of 64.5 and velocity of 3034 with a 168gr sierra HPBT.</p><p> </p><p>I loaded up some sighters at 63.5gr H4350 and that was the only charge I ended up shooting as I started to get light ejector marks. No flattening of the primers or heavy bolt lift, but a light ejector mark on all but two of the 7 rounds fired.</p><p> </p><p>My velocities: 2979, 2972, 2978, 2961, 2977, 2958, 2983.</p><p> </p><p>Very happy with the consistency but I didn't expect ejector marks on the brass at that charge or velocity.</p><p> </p><p>Next batch was RL17:</p><p> </p><p>64.0gr sighters</p><p> </p><p>3060, 3068, 3049. All with ejector marks with no other signs of overpressure.</p><p> </p><p>85 degrees, 1200ft elevation.</p><p> </p><p>So what do you guys think? I would appreciate any input, especially from those that reload this caliber with those powders. Of course I realize that each chamber and barrel can vary but I am curious what others are getting.</p><p> </p><p>Thanks,</p><p> </p><p>John</p></blockquote><p></p>
[QUOTE="Dentite, post: 1003685, member: 84845"] Hey gang, I've been a bit of lurker and finally registered. First post. I got a Browning X bolt in .300 WSM recently I just shot it for the first time this weekend. I picked loads below published data limits and was surprised to see some signs of overpressure. I loaded two batches, all with new Win brass, CCI magnum primers, Barnes 168 TTSX. Loaded to just fit in the magazine (which happened to be 0.020 off the lands). I loaded some sighters and then some increasing powder charges to find out when I ran into pressure signs so I could know my upper limit and start developing an accurate load. First batch was H4350. Hodgdon lists 61.0 as a start with a velocity of 2908 and a max of 64.5 and velocity of 3034 with a 168gr sierra HPBT. I loaded up some sighters at 63.5gr H4350 and that was the only charge I ended up shooting as I started to get light ejector marks. No flattening of the primers or heavy bolt lift, but a light ejector mark on all but two of the 7 rounds fired. My velocities: 2979, 2972, 2978, 2961, 2977, 2958, 2983. Very happy with the consistency but I didn't expect ejector marks on the brass at that charge or velocity. Next batch was RL17: 64.0gr sighters 3060, 3068, 3049. All with ejector marks with no other signs of overpressure. 85 degrees, 1200ft elevation. So what do you guys think? I would appreciate any input, especially from those that reload this caliber with those powders. Of course I realize that each chamber and barrel can vary but I am curious what others are getting. Thanks, John [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Ran into signs of pressure sooner than expected with .300WSM. Need input
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