Slowpoke Slim
Elite Member
- Joined
- Jan 6, 2017
- Messages
- 3,733
- Location
- Bismarck, ND
- Tractor
- Husqvarna YTH24V48 riding mower, Branson 3725CH
Pulled out my reloading notebook:
Load 1: Sierra 150 gr bullet, 32.5 grs IMR 3031, Win Lg Rifle primer, Winchester brass. The bullets are seated to 2.890"
The bullets are seated much longer than book over all length (OAL). My barrel has a large jump to the throat. Seating these "long" gave me a big jump in accuracy. Play with your seating depth. The "book length" in the Sierra manual was 2.770". When I set mine out to their current OAL, the difference was night and day. They are sitting .010" off the lands on my barrel.
Load 2: Sierra 125 gr bullet, 39.0 grs W-748, Win Lg Rifle primer, Winchester brass. The bullets are seated to 2.720". Seating them out any further and I felt like I didn't have enough bullet sitting in the case neck. These are hunting rounds, not target range rounds, so they were going to be stuffed into shirt, coat or pants pockets and travel over hill and dale that way. I didn't want bullets getting pulled out of the case necks. Sierra still listed the OAL as 2.770" (at least in my Sierra manual-5th Edition). If these were "range rounds", like some of my target/competitive ammo, I wouldn't have been as concerned.
Load 3: Nosler 150 gr bullet.
I can't find my page from my notebook that has this load on it. Most concerning, as I have no idea why I would have taken it out (3 ring binder). So I won't try to "guess" the load. If I locate it I'll send you the data. I believe it was W-748 on the powder, but it "could have been" IMR-3031. It was one or the other. The bullets were also seated .010" off the lands, which was much longer than "book" length.
Quite a few of my factory T/C barrels came to me with long throats. Seating the bullets "long" has made some terrific improvements. Sometimes, like my 22 Hornet barrel, the improvement was stunning. But even my 35 Rem barrel improved greatly.
Load 1: Sierra 150 gr bullet, 32.5 grs IMR 3031, Win Lg Rifle primer, Winchester brass. The bullets are seated to 2.890"
The bullets are seated much longer than book over all length (OAL). My barrel has a large jump to the throat. Seating these "long" gave me a big jump in accuracy. Play with your seating depth. The "book length" in the Sierra manual was 2.770". When I set mine out to their current OAL, the difference was night and day. They are sitting .010" off the lands on my barrel.
Load 2: Sierra 125 gr bullet, 39.0 grs W-748, Win Lg Rifle primer, Winchester brass. The bullets are seated to 2.720". Seating them out any further and I felt like I didn't have enough bullet sitting in the case neck. These are hunting rounds, not target range rounds, so they were going to be stuffed into shirt, coat or pants pockets and travel over hill and dale that way. I didn't want bullets getting pulled out of the case necks. Sierra still listed the OAL as 2.770" (at least in my Sierra manual-5th Edition). If these were "range rounds", like some of my target/competitive ammo, I wouldn't have been as concerned.
Load 3: Nosler 150 gr bullet.
I can't find my page from my notebook that has this load on it. Most concerning, as I have no idea why I would have taken it out (3 ring binder). So I won't try to "guess" the load. If I locate it I'll send you the data. I believe it was W-748 on the powder, but it "could have been" IMR-3031. It was one or the other. The bullets were also seated .010" off the lands, which was much longer than "book" length.
Quite a few of my factory T/C barrels came to me with long throats. Seating the bullets "long" has made some terrific improvements. Sometimes, like my 22 Hornet barrel, the improvement was stunning. But even my 35 Rem barrel improved greatly.
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