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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm rem and 180 bergers...again
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<blockquote data-quote="brentc" data-source="post: 625508" data-attributes="member: 16938"><p>Did you figure out a load yet? I shot a bit today and settled on two loads. I've found that my barrel has picked up some speed now that I've put a few rounds through it. The first load is 68.8 grains of H1000 with a CCI 250. Velocity is 2956. The next load is 70.0 grains of Retumbo with a CCI 200 for 3035 fps out of a 28" tube. When I had this barrel chambered I had it reamed to a 168 loaded with the top of the boat tail seated to the bottom of the neck so it will probably be a little different for your chamber and barrel velocity wise. The gun prefers 180s over 168s, as do I since my primary use for this gun is hunting.</p><p> </p><p>The H1000 carries a single digit ES with 3 of 4 shots duplicating. The Retumbo load is around 25 for ES. Both loads produced 1.5" groups at 325 yards off the bipod. Neither load produced excess pressure according to bolt lift and pressure signs. The POI between the two loads is nearly identical. I could almost interchange them to 350. I need to stretch them out a little to see how they compare at longer range.</p><p> </p><p>I really need to bed this rifle into a stock. I have it in an aluminum blocked M40 style B&C with a Manner's MCS-T on the way in a couple weeks. I really feel it still has something to prove. Once the Manners comes in, I'll bed it up and get back at it. At least I have a good idea of what too expect from this 7mm when it's all said and done.</p></blockquote><p></p>
[QUOTE="brentc, post: 625508, member: 16938"] Did you figure out a load yet? I shot a bit today and settled on two loads. I've found that my barrel has picked up some speed now that I've put a few rounds through it. The first load is 68.8 grains of H1000 with a CCI 250. Velocity is 2956. The next load is 70.0 grains of Retumbo with a CCI 200 for 3035 fps out of a 28" tube. When I had this barrel chambered I had it reamed to a 168 loaded with the top of the boat tail seated to the bottom of the neck so it will probably be a little different for your chamber and barrel velocity wise. The gun prefers 180s over 168s, as do I since my primary use for this gun is hunting. The H1000 carries a single digit ES with 3 of 4 shots duplicating. The Retumbo load is around 25 for ES. Both loads produced 1.5" groups at 325 yards off the bipod. Neither load produced excess pressure according to bolt lift and pressure signs. The POI between the two loads is nearly identical. I could almost interchange them to 350. I need to stretch them out a little to see how they compare at longer range. I really need to bed this rifle into a stock. I have it in an aluminum blocked M40 style B&C with a Manner's MCS-T on the way in a couple weeks. I really feel it still has something to prove. Once the Manners comes in, I'll bed it up and get back at it. At least I have a good idea of what too expect from this 7mm when it's all said and done. [/QUOTE]
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7mm rem and 180 bergers...again
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