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RL-22 & 140 Noslers BT

 
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  #1  
Old 01-31-2009, 09:46 AM
WRG WRG is offline
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RL-22 & 140 Noslers BT

Good-day all,

Would anyone have a good starting load for 7MM RM 26" barrel using the Reloader - 22 & 140 gr Nosler BT. I will be using WLRM primers & Norma cases. Looking for 3000 - 3100 fps which should be achievable. I always check both bullet & powder companies reloading manuals but neither list this combo.

Rifle is a New Browning X-Bolt with a Leupold VXIII 4 x 10.5 x 40mm for now. Plan on putting either a Nikon laser IRT 4 x 12 x 42 or Bushnell LRF later this spring.

Also if you could comment on temp stability on this powder that would be must helpful. The work - up will consist of 2 other powders as well. Retumbo & H4831sc and may try some Varget as I have plenty on hand. 2 other bullets in the work-up will be Barnes 140 TTSX & 140 Scirocco II. Maybe throw in some Berger VLD as well. Any information on this work-up would be most appreciated.

Thanks Bill
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Old 01-31-2009, 10:53 AM
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Re: RL-22 & 140 Noslers BT

WRG,
Hey man, love the 7Mag. Been shooting it for years. For some reason I've always felt/thought the 140 was too light in the big 7's (7Mag, STW & RUM) and was better suited for the 7mm-08 and 7X57. I would employ the 140gn TSX however, because of it's monolithic design. That's just me though.
With all that outta the way, I used to shoot the 150gn BT with 67gn of RL22, and a CCI BR2 primer in my first Sendero. That was a one-hole tack driving load. My latest 7Mag (700P) doesn't like that load as much and seems to prefer 63.5gn (over book max by .5gn) of IMR4350 with a 9.5M primer and the 150gn. OAL is 2.80". Getting 3211fps (avg) and sub 1/2" groups with this.
I found in my reloading journal that on 5/22/07 I loaded the 140gn TSX with 68.5 and 69.0gn's of RL22 with a 9.5M. OAL was 2.740". With these components for 68.5gn I average 3234fps and accuracy was .4525", with 69.0gn I got 3297fps and .9570". On the 68.5gn load the first two shots grouped at .1835", third shot opened it up to .4! Darnit! This has really been an accurate bullet for me in my rifle. I'm not sure of it's long range potential. Maybe some else has some experience with them.
I have both Nosler's #5 & 6 and for the 140gn they show 67.5gn (3340) as max and 63.5 (3160) as min. They don't list either Retumbo or H4831SC. Hodgdon does "conservatively" list both with the 140gn Partition. Cartridge Loads - Hodgdon Reloading Data Center - data.hodgdon.com
I haven't found RL22 to be temperature sensitive. I shoot it in temps that run from 30 - 95 deg and have not experienced problems. Swift Scirocco: for .284, they only make it in 150gn. Accuracy is right there with the Ballistic Tip. Not sure about the Varget as I've never tried it in this caliber. JohnnyK.
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Old 02-02-2009, 07:46 PM
WRG WRG is offline
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Re: RL-22 & 140 Noslers BT

Thanks JohnnyK, that was very informative to say the least. I appreciate it for sure!

From what I understand the 7mm RM was developed around the 140 gr bullet and is a great bullet choice for CXP2/CXP3 game. Actually any bullet weight from 130-160 gr are all good choice. Anything over that and your looking at CXP3/CXP4. Anything under and we are talking about Varmint hunting.

Barnes Tipped TSX bullet "IMO" is the best bullet out there as far as controlled expansion / terminal impact is concerned. You won't find a better bullet out there that will retain the amount of mass as the TSX. Nearly 100%.
I shoot the 168 gr Tipped TSX in my M700P/ .308 cal with great accuracy. 0.4220 MOA @ 100 yards.

A long time friend of mine hunts Africa twice a year with his 20 year old Winchester Model 70 in 7mm RM and uses a 150 gr Scirocco II, with 68 gr H4831sc, Norma cases, WLRM primers. With nearly 3000 rounds through it. I asked him if he ever lost an animal and he said "never"! He has taken Kudoo, Water Buffalo, Wilderbeast, Warthogs, Zebra's and so on. All thick skinned animals. The weight retention on the bullets he retrieved were 60% at best.

My intentions for the 140 gr is strictly for Whitetails / Mule deer. I am hoping the TSX will perform in this X-bolt. If not, I want a back up i.e. Nosler, Scirocco, Berger.... and you rite, the Scirocco II doesn't come in 140 gr. I will have to use the 150's.

I am also glad to hear there is no need to worry to much about the temp stability of the RL-22. I think I will start @ 65.0 and work it up until the velocities level out. My original thought was that would be around 66.5 - 68.0. I shouldn't have any problem reaching 3100 fps and will most likely reach up wards of about 3200 fps. Which I hope is a good thing!

Thanks again for all your information.

Bill
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Last edited by WRG; 02-03-2009 at 08:01 PM.
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Old 02-02-2009, 09:46 PM
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Re: RL-22 & 140 Noslers BT

WRG,
Amen on the TSX's! They are awesome bullets. Sometimes I feel kinda guilty using them. They are so darn accurate and they slam anything they come into. I used the 100gn TSX in my .25-06 Sendero and only recovered one bullet. That was from a NC 6pt, Texas heart shot at 200yds and recovered the bullet in his chest, just under the hide. I wrote two review's for it (.257 100gnTSX)on MidwayUSA back in 9/30 and 10/23 of 2003. The recovered 100gn bullet weighed 99.805gn and was a picture perfect mushroom. JohnnyK.
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Old 02-03-2009, 04:52 AM
WRG WRG is offline
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Re: RL-22 & 140 Noslers BT

The 25-06 is a awesome cal and in fact I have a Weatherby MarkV SV in that cal on order. I just hope it won't take as long to get in as the Browning took. I waited nearly 5 weeks. Though I was told 10-14 days.

I am planning on setting this rifle up as my Coyote eliminator! What type of velocity can I expect with the 100 gr TTSX?

I thought I read somewhere that Barnes would be coming out with a 90 / 100 gr Varmint Grenade for the .257 cal. If thats the case I would try those as well. Thats one bad ***** bullet from what I'm hearing if set up correctly! I also have read they have been known to pass right through so more research will need to take place before I commit to those. Barnes hasn't disappointed me yet!
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Old 02-03-2009, 09:40 AM
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Re: RL-22 & 140 Noslers BT

I know what 'cha mean. Tom Petty did too, although he wasn't singing about rifles and such. The .25-06 is a great round and should give you great service at its intended purpose of ridding the world of vermin. Good luck with those coyotes, they are fart smellers.
You know I looked back through my reloading journal and couldn't find where I ever chrono'd the 100gn TSX's. I was also shooting the 100gn NBT at the same time and was getting 3300fps with the same powder charge/primers. This was from a 26" barrel, which I think your Weatherby will have also.
I have heard anything about the Grenades. I will keep an ear to the ground for them though..JohnnyK.
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Old 02-04-2009, 12:15 AM
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Re: RL-22 & 140 Noslers BT

140g NBT, 68.5g RL-22, Rem case, Fed 215, OAL=3.350" Velocity is 3250fps, and accuracy is 1/4-1/2 MOA from my Rem 700 BDL 7 mag. This is probly THE most consistently accurate load in this rifle. It shoots 1"-2" groups at 400 yards with the factory tube. Easily one of the most accurate factory sticks I"ve owned.

It is a warm load though so work up with caution. I think I've got at least 5 firings on the rem brass though even with this load.

I'm afraid to change anythign with this load but it looks like I"ll have to try a WLRM instead of the F215 since I have less then 50 of them.
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