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Rifles, Reloading, Optics, Equipment
Reloading
Load development? 300rum, 230gr, RL33
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<blockquote data-quote="Wachsmann" data-source="post: 972540" data-attributes="member: 10429"><p>The rifle is a custom build with a 30" Bartlein barrel throated for maximum mag length in my Seekins DBM (3.900") COAL is about 3.850"</p><p> </p><p>Catfur....Not to be rude but his mag and cartridge length is no where near sammi specs or anything close to a regular ultra mag length. I have one and I'm single feeding it. My 230 berger load want fit in the mag. I'm at or I think I'm somewhere around 3.79 for my COAL. With that long bullet it almost usless to try and fit in the mag. I wished Remington would of made the mag a lot longer. </p><p> </p><p>But on another note I'm really interested in what the R33 brings to the table. I like the retumbo only because my load seems to be spot on. Well at 200yards so far. I have not streched it legs out. But it shot about a .3 inch group at 200. I was able to crono 2 loads and was getting 2960 and 2970 on the 2. I have read some post where the R33 was giving some good results up in the 3100ish fps also. Probablly the same ones you read. I been thinking that with a 28 inch barrel I may be able to get to 3050 with the same load. 89.4 grns of retumbo and yes brass, bullets, and powder is like tring to find gold well expecially the powder. I have not been able to score any retumbo in 8 to 10 months. I bought 4 boxes of reduced recoil loads just for the brass. I have had a hard time paying for the high priced stuff that is supposed to be ready to load. its like getting the taste slapped out of you mouth when you see the price on that stuff.</p><p> </p><p>So was the 30 inch barrel just a thought are is there some good research behind the length, with maximum powder burn and optimum velocity? Reason I ask it seems like the RUM with that large powder charge could really benefit from a longer barrel. I've read a lot of post on custom RUM's and it seem a lot usually have 28inch barrels. My gun is a stock Rem Sendero 26 inch barrel with a side ported brake. Trigger been tuned and it's been bedded. </p><p> </p><p>One more quick note about the ladder test. Instead of powder I worked on seating depth first and then the powder. It brought my load development in a lot quicker. I was using increments of 15 thousands in between loads. I found a sweet spot with about 18 rounds. Next time I went out I set up for .005 on either side of the sweet spot to see if I could obtain a tighter group. This was 9 more rounds. I also had loaded almost all the charges at 1 grain off max book charge. The next time out was to increase powder in 1 or .5 grain increments. So now I am at 89.4 grains of retumbo which is 1 grain over the berger manual. I think the 89.4 is 100% of load density for the 230 berger. There is another shooter on here that made an almost to goog to be true group at 1000yrds. It is so freaking unreal but that gun and the shooter can shoot. Well anyway enough bla bla bla...Hope the R33 works out well.</p></blockquote><p></p>
[QUOTE="Wachsmann, post: 972540, member: 10429"] The rifle is a custom build with a 30" Bartlein barrel throated for maximum mag length in my Seekins DBM (3.900") COAL is about 3.850" Catfur....Not to be rude but his mag and cartridge length is no where near sammi specs or anything close to a regular ultra mag length. I have one and I'm single feeding it. My 230 berger load want fit in the mag. I'm at or I think I'm somewhere around 3.79 for my COAL. With that long bullet it almost usless to try and fit in the mag. I wished Remington would of made the mag a lot longer. But on another note I'm really interested in what the R33 brings to the table. I like the retumbo only because my load seems to be spot on. Well at 200yards so far. I have not streched it legs out. But it shot about a .3 inch group at 200. I was able to crono 2 loads and was getting 2960 and 2970 on the 2. I have read some post where the R33 was giving some good results up in the 3100ish fps also. Probablly the same ones you read. I been thinking that with a 28 inch barrel I may be able to get to 3050 with the same load. 89.4 grns of retumbo and yes brass, bullets, and powder is like tring to find gold well expecially the powder. I have not been able to score any retumbo in 8 to 10 months. I bought 4 boxes of reduced recoil loads just for the brass. I have had a hard time paying for the high priced stuff that is supposed to be ready to load. its like getting the taste slapped out of you mouth when you see the price on that stuff. So was the 30 inch barrel just a thought are is there some good research behind the length, with maximum powder burn and optimum velocity? Reason I ask it seems like the RUM with that large powder charge could really benefit from a longer barrel. I've read a lot of post on custom RUM's and it seem a lot usually have 28inch barrels. My gun is a stock Rem Sendero 26 inch barrel with a side ported brake. Trigger been tuned and it's been bedded. One more quick note about the ladder test. Instead of powder I worked on seating depth first and then the powder. It brought my load development in a lot quicker. I was using increments of 15 thousands in between loads. I found a sweet spot with about 18 rounds. Next time I went out I set up for .005 on either side of the sweet spot to see if I could obtain a tighter group. This was 9 more rounds. I also had loaded almost all the charges at 1 grain off max book charge. The next time out was to increase powder in 1 or .5 grain increments. So now I am at 89.4 grains of retumbo which is 1 grain over the berger manual. I think the 89.4 is 100% of load density for the 230 berger. There is another shooter on here that made an almost to goog to be true group at 1000yrds. It is so freaking unreal but that gun and the shooter can shoot. Well anyway enough bla bla bla...Hope the R33 works out well. [/QUOTE]
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Load development? 300rum, 230gr, RL33
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