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Long Range Hunting & Shooting
1st Range Day with SAUM
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<blockquote data-quote="Okanogan" data-source="post: 1904931" data-attributes="member: 90397"><p>I'm still working up loads for the new GAP 6.5 SAUM I got last week. Also followed their break-in recommendations and could only get 10 shots in the first session so you got further than I did. It got better from that point on as the copper fouling dropped off pretty quickly afterward. I'm now just under 100 rds and can run a 25 shot string with little copper fouling.</p><p></p><p>Your velocities look very close to what I was getting with 143 ELDX and similar charge weight in ADG brass. Never could get the 143 ELDX to shoot well as the bullet shape/ gap reamer forces me to seat the ELDXs too deep.</p><p>If you haven't already, I would suggest using the Wheeler method to determine distance to the lands for whatever bullets you hope to shoot. The 140 Berger Elite hunters look like I could seat them out to right about my mag limits. The 156 Berger EH have me starting back a little farther but the range session with them yesterday looked promising with 1/2 moa at 0.060" OL.</p><p></p><p>H1000 didn't start showing good ES/SD until I got about 60.5 grains with the ELDXs. Velocities were still below 2950 at that point with my 23" barrel. I started with 57.0 grains of RL26 for the 156 EH which put me about 2830 fps. No signs of pressure yet on anything I've shot. I still have a ways to go on the load development journey for this rifle but the range is less than 5 miles from the house and I've got enough components to keep me running despite the covid semi-lockdown and run on reloading supplies.</p><p></p><p>I'm pretty sure you'll like your new GAP rifle. This last one made 4 for me.</p></blockquote><p></p>
[QUOTE="Okanogan, post: 1904931, member: 90397"] I'm still working up loads for the new GAP 6.5 SAUM I got last week. Also followed their break-in recommendations and could only get 10 shots in the first session so you got further than I did. It got better from that point on as the copper fouling dropped off pretty quickly afterward. I'm now just under 100 rds and can run a 25 shot string with little copper fouling. Your velocities look very close to what I was getting with 143 ELDX and similar charge weight in ADG brass. Never could get the 143 ELDX to shoot well as the bullet shape/ gap reamer forces me to seat the ELDXs too deep. If you haven't already, I would suggest using the Wheeler method to determine distance to the lands for whatever bullets you hope to shoot. The 140 Berger Elite hunters look like I could seat them out to right about my mag limits. The 156 Berger EH have me starting back a little farther but the range session with them yesterday looked promising with 1/2 moa at 0.060" OL. H1000 didn't start showing good ES/SD until I got about 60.5 grains with the ELDXs. Velocities were still below 2950 at that point with my 23" barrel. I started with 57.0 grains of RL26 for the 156 EH which put me about 2830 fps. No signs of pressure yet on anything I've shot. I still have a ways to go on the load development journey for this rifle but the range is less than 5 miles from the house and I've got enough components to keep me running despite the covid semi-lockdown and run on reloading supplies. I'm pretty sure you'll like your new GAP rifle. This last one made 4 for me. [/QUOTE]
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