I am still on my first set of brass for the RUM. I probably have 10 firings on each case. I know this is a lot and I know I need new brass in the worst kind of way. Money has been tight (only 21 and just bougth a house [img]/ubbthreads/images/graemlins/ooo.gif[/img]) and I have only been neck sizing since the first firing, so i'm not too worried about a case head seperation just yet. Although it's comming soon if I don't get new brass.
The primer pockets are loose, however this started probably 3 firings back. I will back this load off a few grains and see what the chrono says. It was accurate though, which makes me happy as can be! I've been struggling to find a load that will work in this gun, and will hold together on an animal at 3200-3300FPS velocities.
It doesn't like TSX's, Siroccos, or Interbonds so I guess I need to check out Noslers bonded lineup .
I was wondering how the SST's compare? I was under the impression this was a psuedo varmint round, or would at least act like one in a 300 RUM at close ranges?
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if you can get ahold of some barnes 180gr MRX's try them. they are a~kin to the triple shocks with a poly tip, and an improved profile. im testing some right now. the initial results are promising out of my Sendero 300WM.
I've been getting right around 3400 FPS with my 300 RUM and 180 Grain TSX.. using 96.5 grains of Retumbo and thats about half a grain below what I felt was a safe pressure point because at 98-100gains I found you better have deep pockets for new brass after each firing :P
An interesting read though since I first used RL-25 for my first run through reloading then switched to Retumbo, but never did Chrono the RL-25... interesting.
I have been having the same results in a custom 300 RUM built on a Rem 700 action. It has a 27 inch Lilja with a three groove, one-in-twelve twist rate. Good enough to stabilize the 180 gr. bullets, but nothing higher. More a hunting rig than a 1000+ longrange paper puncher.
I fired over 200 test rounds before I found one that would work. I used H1000, Retumbo and RL22. In my warm weather climate, the RL22 was too eratic. The Retumbo would produce decent velocities, but then would spike every so often to scary velocities. I stuck with H1000. I couldn't get the 165 gr. or 168 gr. TSX bullets to group well at any velocity, but I finally got the 180 gr. TSX to group inside .5 inch. However, to get there, I had to load 98.0 gr. of H1000 behind the 180 gr. TSX. The chrony ave. says 3,450 fps with a variance of 20 fps on either side. No signs of pressure yet, but I know I'm close. No sticky bolt, loose primer pockets or bright ejector markings. Primers are somewhat flat, but not much. No cratering of firepin hole. I would love to back off this some, but I've gone as low as 95.5 gr. and have not yet been able to get a sub MOA group. Can't find the next lower nodule on my ladders.
I want someone to hold my hand and tell me the load is OK and that these nagging doubts are unjustified. If not, then the next grouping will be at velocities easily obtained from a 300WM, which defeats the whole purpose of having the 300 RUM to begin with. The other alternative is to trash my TSX load data and start over again using 180 gr. or 165 gr. AB. Any advice for me?
I have been having the same results in a custom 300 RUM built on a Rem 700 action. It has a 27 inch Lilja with a three groove, one-in-twelve twist rate. Good enough to stabilize the 180 gr. bullets, but nothing higher. More a hunting rig than a 1000+ longrange paper puncher.[Quote
I have a 300 Rum with a 1 in 12 twist Krieger barrel and it shoots 200 grain Accubonds quite accurately..............
I am going to try some 210 Wildcats in it next...........
range it,check the wind, dial in correction, aim and only one shot
How was the rifle put together? Was the receiver accurized before the barrel fitting?
The reason I ask is because I have fitted around 200 Lilja barrel in the last couple years or so and I have yet to have one as finicky as the barrel you discribe. Many on this board are using Lilja barrels for 300 RUMS and getting very good results right off the bat.
Just curious why your rifle is so finicky, something seems off to me there. Is it a light weight rifle?
Just curious [img]/ubbthreads/images/graemlins/grin.gif[/img]!!
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