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Just finalized a load today.
LaRue PredatOBR 7.62 18 inch barrel 168 grain Sierra Matchking 41.9 grains Reloder 15 Federal Brass Federal 210 M Primer COAL 2.805 CBTO 2.218 Shot a 5 shot group with this today of 0.658 inches. Would've been tighter but I pulled the fifth shot slightly. They say 42 gr Reloder 15 is the FGMM clone but I couldn't get that load to group as well as the 41.9 grain loads. Will try to post a picture later when I have time to figure out how. |
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Quoted: Just finalized a load today. LaRue PredatOBR 7.62 18 inch barrel 168 grain Sierra Matchking 41.9 grains Reloder 15 Federal Brass Federal 210 M Primer COAL 2.805 CBTO 2.218 Shot a 5 shot group with this today of 0.658 inches. Would've been tighter but I pulled the fifth shot slightly. They say 42 gr Reloder 15 is the FGMM clone but I couldn't get that load to group as well as the 41.9 grain loads. Will try to post a picture later when I have time to figure out how. View Quote |
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Did you by chance chrono that load? I have gotten very good accuracy with RL 15 but I have also chronoed almost every load I have shot with multiple different lots and there is a likelihood that your load will chrono substantially slower than you hope. Possibly as much as 100 FPS slower than other powders. To get the same vel from RL15, I have found, requires 1-2 grains more than 4064, 4895. YMMV. I have also heard the rumor that FGMM is RL15 but if you ever pull a loaded FGMM bullet and look the powder that resides in that case is definately not RL15. If you get a chance to chrono that load let us know where it was Vel wise. Hope this helps some, best luck. View Quote View All Quotes View All Quotes Quoted:
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Just finalized a load today. LaRue PredatOBR 7.62 18 inch barrel 168 grain Sierra Matchking 41.9 grains Reloder 15 Federal Brass Federal 210 M Primer COAL 2.805 CBTO 2.218 Shot a 5 shot group with this today of 0.658 inches. Would've been tighter but I pulled the fifth shot slightly. They say 42 gr Reloder 15 is the FGMM clone but I couldn't get that load to group as well as the 41.9 grain loads. Will try to post a picture later when I have time to figure out how. I don't currently own a chronograph (it is on the list of things to get soon) so I don't know the velocities at this time. This load has shot consistently for me out to 300 yards, which is the max distance I intend to use it for. I've got some Varget and 4064 I intend to work up loads with in the future for possible longer range use and I will definitely be using chrono before finalizing those loads. |
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Quoted: I don't currently own a chronograph (it is on the list of things to get soon) so I don't know the velocities at this time. This load has shot consistently for me out to 300 yards, which is the max distance I intend to use it for. I've got some Varget and 4064 I intend to work up loads with in the future for possible longer range use and I will definitely be using chrono before finalizing those loads. View Quote View All Quotes View All Quotes Quoted: Quoted: Quoted: Just finalized a load today. LaRue PredatOBR 7.62 18 inch barrel 168 grain Sierra Matchking 41.9 grains Reloder 15 Federal Brass Federal 210 M Primer COAL 2.805 CBTO 2.218 Shot a 5 shot group with this today of 0.658 inches. Would've been tighter but I pulled the fifth shot slightly. They say 42 gr Reloder 15 is the FGMM clone but I couldn't get that load to group as well as the 41.9 grain loads. Will try to post a picture later when I have time to figure out how. I don't currently own a chronograph (it is on the list of things to get soon) so I don't know the velocities at this time. This load has shot consistently for me out to 300 yards, which is the max distance I intend to use it for. I've got some Varget and 4064 I intend to work up loads with in the future for possible longer range use and I will definitely be using chrono before finalizing those loads. |
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16" OBR with SDN6 can
Nosler brass CCI 200 42 Gr 8208 XBR 165 Gr Nosler B-tip 2.810 COAL Light crimp using a lee factory crimper picked up 2 bottles of IMR 4166 at bass pro yesterday for the ridiculous price of $34/lb. Going to try that out since I'm low on XBR and can't find it anywhere... |
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Quoted:
Just finalized a load today. LaRue PredatOBR 7.62 18 inch barrel 168 grain Sierra Matchking 41.9 grains Reloder 15 Federal Brass Federal 210 M Primer COAL 2.805 CBTO 2.218 Shot a 5 shot group with this today of 0.658 inches. Would've been tighter but I pulled the fifth shot slightly. They say 42 gr Reloder 15 is the FGMM clone but I couldn't get that load to group as well as the 41.9 grain loads. Will try to post a picture later when I have time to figure out how. View Quote Edit: Still can't seem to get the actual picture to post, only the link. Anyone that has any tips for posting images would be greatly appreciated. I've posted the link below for the time being. The chronograph has been ordered so hopefully I will have it by this weekend to get some velocity data. http://i1360.photobucket.com/albums/r647/andrewouzts/Larue%20PredatOBR/IMAG0342_zpscpidy2qy.jpg Edited again to add velocity data. Using Magnetospeed V3 chronograph, my average velocity of this load on a 10 shot string was 2451 fps. For comparison, FGMM 168 gr came in at 2528 fps. Accuracy is great out to 300 yards which is the max I will use this for most likely. |
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SO I was reloading for my OBR 7.62 on my Dillon XL650, but now I'm leaving that set up for pistol and switching the .308 over to my RCBS Rock Chucker single stage.....
I'm still using the Dillon resizing die but this is my first time setting it up on the Rock Chucker. I've got Once-fired Lapua brass. How far should I be soft bumping back? 0.002? |
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Quoted: 16" PredatAR 7.62 Vortex 2.5-10x32 mil/mil LT158 SPR/S Mount Atlas bipod sandbag rear 175gr Nosler Custom Competition <------- 42.5gr Varget <---------- Federal Brass <----------- Fed210 primer 2.851" OAL <--------- (had to use the LaRue mag. It's the John Holmes of magazines!) 93m .490" 5-shot .369" 5-shot .321" 5-shot avg 2428 fps (this is over 15 shots) SD 12 ES 39 This is the same load that got over 2500 fps with each type of brass in my brass test. The difference is that those rounds were loaded a lot shorter than these ones. So, the accuracy is better here, but I get a lot less MV. I'm not sure that quibbling over .1" is worth the 100 fps. I'd rather have the MV than the extra .1" in a group, especially at this level. http://i994.photobucket.com/albums/af70/thebelly925/Mobile%20Uploads/20150403_161221_zpsnpewohjz.jpg http://i994.photobucket.com/albums/af70/thebelly925/Mobile%20Uploads/20150403_161238_zps0zmmxzjp.jpg I'll squish a couple of these rounds down a bit and double check that I get more MV (I probably will) and a group that's slightly larger (it probably will be) with these rounds at 2.805"~ish View Quote |
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Looking forward to this one- I have a ton of Nosler 175s and varget... I'd probably drop it down a bit to stay consistent with my GM loads i have stocked up though. View Quote View All Quotes View All Quotes Quoted:
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16" PredatAR 7.62 Vortex 2.5-10x32 mil/mil LT158 SPR/S Mount Atlas bipod sandbag rear 175gr Nosler Custom Competition <------- 42.5gr Varget <---------- Federal Brass <----------- Fed210 primer 2.851" OAL <--------- (had to use the LaRue mag. It's the John Holmes of magazines!) 93m .490" 5-shot .369" 5-shot .321" 5-shot avg 2390 fps (this is over 15 shots) <---------- THIS IS THE CORRECT MV, BASED ON TESTING AT 1K Yards. SD 12 ES 39 This is the same load that got over 2500 fps with each type of brass in my brass test. The difference is that those rounds were loaded a lot shorter than these ones. So, the accuracy is better here, but I get a lot less MV. I'm not sure that quibbling over .1" is worth the 100 fps. I'd rather have the MV than the extra .1" in a group, especially at this level. http://i994.photobucket.com/albums/af70/thebelly925/Mobile%20Uploads/20150403_161221_zpsnpewohjz.jpg http://i994.photobucket.com/albums/af70/thebelly925/Mobile%20Uploads/20150403_161238_zps0zmmxzjp.jpg I'll squish a couple of these rounds down a bit and double check that I get more MV (I probably will) and a group that's slightly larger (it probably will be) with these rounds at 2.805"~ish I seated ten of these rounds down to 2.804" OAL. The accuracy wasn't any better (damn) but wasn't any worse (yay). The velocity DID increase. 175 gr Nosler Custom Competition 42.5gr Varget Fed Brass Fed 210 Primer 2.805" OAL 2414 fps avg SD 13 ES 41 *********I had to correct the initial MV readings based on what teh bullet was actually showing me.************ The SD and ES increased a bit. Also, 3 of the 10 rounds had a slight ejector swipe on the brass, but nothing to be concerned about. If I were to use this load for accuracy at longer range (and I DO) then I'll leave them long, try to stuff more powder in there and get a bit more MV. This next weekend I have two competitions. One of them I'm going to use the PredatAR in just because I said I would. It MAY be a little rough going against purpose built long range rigs, but whatever. I'll learn a TON!! **The Chronograph used was a Shooting Chrony F1. It has since been proven to have inaccurate results** |
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SO I was reloading for my OBR 7.62 on my Dillon XL650, but now I'm leaving that set up for pistol and switching the .308 over to my RCBS Rock Chucker single stage..... I'm still using the Dillon resizing die but this is my first time setting it up on the Rock Chucker. I've got Once-fired Lapua brass. How far should I be soft bumping back? 0.002? View Quote I am loading on 223 Lapua brass. My dies are adjusted to give the shoulder .002" setback. I have not run into any feeding or pressure issues. Accuracy is as good as I have seen. Hth |
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Quoted: I seated ten of these rounds down to 2.804" OAL. The accuracy wasn't any better (damn) but wasn't any worse (yay). The velocity DID increase. 175 gr Nosler Custom Competition 42.5gr Varget Fed Brass Fed 210 Primer 2.805" OAL 2414 fps avg SD 13 ES 41 *********I had to correct the initial MV readings based on what teh bullet was actually showing me.************ The SD and ES increased a bit. Also, 3 of the 10 rounds had a slight ejector swipe on the brass, but nothing to be concerned about. If I were to use this load for accuracy at longer range (and I DO) then I'll leave them long, try to stuff more powder in there and get a bit more MV. This next weekend I have two competitions. One of them I'm going to use the PredatAR in just because I said I would. It MAY be a little rough going against purpose built long range rigs, but whatever. I'll learn a TON!! View Quote View All Quotes View All Quotes Quoted: Quoted: Quoted: 16" PredatAR 7.62 Vortex 2.5-10x32 mil/mil LT158 SPR/S Mount Atlas bipod sandbag rear 175gr Nosler Custom Competition <------- 42.5gr Varget <---------- Federal Brass <----------- Fed210 primer 2.851" OAL <--------- (had to use the LaRue mag. It's the John Holmes of magazines!) 93m .490" 5-shot .369" 5-shot .321" 5-shot avg 2390 fps (this is over 15 shots) <---------- THIS IS THE CORRECT MV, BASED ON TESTING AT 1K Yards. SD 12 ES 39 This is the same load that got over 2500 fps with each type of brass in my brass test. The difference is that those rounds were loaded a lot shorter than these ones. So, the accuracy is better here, but I get a lot less MV. I'm not sure that quibbling over .1" is worth the 100 fps. I'd rather have the MV than the extra .1" in a group, especially at this level. http://i994.photobucket.com/albums/af70/thebelly925/Mobile%20Uploads/20150403_161221_zpsnpewohjz.jpg http://i994.photobucket.com/albums/af70/thebelly925/Mobile%20Uploads/20150403_161238_zps0zmmxzjp.jpg I'll squish a couple of these rounds down a bit and double check that I get more MV (I probably will) and a group that's slightly larger (it probably will be) with these rounds at 2.805"~ish I seated ten of these rounds down to 2.804" OAL. The accuracy wasn't any better (damn) but wasn't any worse (yay). The velocity DID increase. 175 gr Nosler Custom Competition 42.5gr Varget Fed Brass Fed 210 Primer 2.805" OAL 2414 fps avg SD 13 ES 41 *********I had to correct the initial MV readings based on what teh bullet was actually showing me.************ The SD and ES increased a bit. Also, 3 of the 10 rounds had a slight ejector swipe on the brass, but nothing to be concerned about. If I were to use this load for accuracy at longer range (and I DO) then I'll leave them long, try to stuff more powder in there and get a bit more MV. This next weekend I have two competitions. One of them I'm going to use the PredatAR in just because I said I would. It MAY be a little rough going against purpose built long range rigs, but whatever. I'll learn a TON!! |
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Quoted:Interesting. I was getting 2430ish with fed 175 a few years ago. Have to try again with the chrono and see where it's now and work with this load! Thanks! View Quote The competition today was cancelled due to lightning. Tomorrow is still a go. I'm still using teh 16" PredatAR....bc why the heck not. I have a 20" .308, and I'll see what the velocity of FGMM 175 is out of it. that should be in about a week or so. I'll also be able to get verified MV based on drop tomorrow. |
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OK, so here's what a 175 FGMM looks like: Product number: GM308M2 Lot: U37M273 These are the average over 40 rounds of the same lot. base-to-ogive: 2.226" neck diameter (factory loaded: 0.339" Neck thickness (once fired): 0.015" OAL: 2.801" With the standard of 59*F and 29.92 inHg, this load gives a 1.82 in teh Miller Stability formula. Normal folks say that anything over 1.0 is good. Realists know that at LEAST 1.5 is the way of the future. With those same environmentals, my Ballistics AE machine says that the load will stay supersonic until 880 yards. For all you hunters, using a 7" vital zone radius (normal deer heart + lungs, right?) the Max Point Blank is out at 234 yards. Using the same program, that hits at 2030 fps with 1598 lb.ft of energy. Yeah, it'll put a hurting on a critter. NECK TENSION!!!!! If I want to figure out the perfect neck tension, here's how I do it: [(width of neck wall x 2) + diameter of bullet] - 0.002" = 'proper' neck tension Here's what the loaded FGMM shows us: [0.339 - 0.308 - (2 x 0.015)] = 0.001" left of neck tension. That means that if we want to duplicate that neck tension we need to get ourselves a bushing/bump die and get ourselves the right die to put THAT neck tension on there. Normal folks don't really care about this, but I'm not afraid of going semi-full retard about the loading. And Mark told me that this wasn't a bench gun..... well, that's not going to stop me from trying!! View Quote I tried another 40 rounds of FGMM 175 through the PredatAR yesterday, and I got very similar results: avergae MV 2404 SD of 29 ES of 77 DA was 2715 Temp was 72.4 *sigh* I guess I'm going to have to make my own if I want any consistency. **The Chronograph used was a Shooting Chrony F1. It has since been proven to have inaccurate results** |
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175 gr Nosler Custom Comp
43.6 gr Varget Fed Brass <------ note: This brass has been previously fired from this chamber. It has been FL sized with a .002" shoulder bump. WLR Primer <----- change: I normally use federal primers 2.226" Base-to-Ogive ........... note:This gave a 2.815" OAL with the Noslers, requiring use of the factory LaRue mag, which allows a longer OAL. AVG: 2490 SD: 10 ES: 33 Chronograph: MagnetoSpeed V3 <--------Change from last time 16" LaRue PredatAR 7.62 Vortex PST 2.5-10x FFP LaRue Mount LaRue Magazine <----- change: see above This is the first load that I used with my fancy new chrono, the MagnetoSpeed V3 with rail mount. I created a thread with pics for folks to look at. I was partly to blame for the poor groups on this test; it shot about 1.5"-2.0". I think that by playing with the seating depth a bit, I can make this work, maybe get it into the 0.8" - 1.0" range. This load showed only slight pressure signs in the form of flattened primers and very small ejector swipes. Seeing as the Winchester primers are half-a-pube hair smaller, I figured this would be where I saw something like a leaky primer. I like this speed, but I don't think the gun will end up liking it. The gun LOVES Varget and it LOVES to have the 175 pushed about 2400-2420 fps. I'll still give it a go for groups, just to see if it can work. |
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175 gr Nosler Custom Comp 43.6 gr Varget Fed Brass <------ note: This brass has been previously fired from this chamber. It has been FL sized with a .002" shoulder bump. WLR Primer <----- change: I normally use federal primers 2.226" Base-to-Ogive ........... note:This gave a 2.815" OAL with the Noslers, requiring use of the factory LaRue mag, which allows a longer OAL. AVG: 2490 SD: 10 ES: 33 View Quote I found a very similar load for my 18 inch PredatOBR. I'm using Lapua brass, 175 grain Sierra Matchking, and 43.6 gr Varget with Federal 210M primers loaded to a length of 2.23 base to ogive. I'm getting excellent groups, 2520 fps on average (per my Magnetospeed V3) with a standard deviation of 5.1 and extreme spread of 11 (only a 10 shot group for that initial velocity test). No pressure signs surprisingly with this load. Actually got up to 43.9 and showed mild ejector swipes and mild primer flattening with SOME but not all rounds at 43.9, but these were more pronounced at 44.2 grains so my max load would be 43.9 but I think I'll stick with 43.6. So far, my LaRue seems to like the 175 SMK pushed in the 2490-2530 range (currently finalizing an IMR4064/175 gr SMK load that seems to want to be pushed 2490-2500). |
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175 gr Nosler Custom Comp
43.0 gr Varget LCLR Brass Fed 210 Primer Avg: 2433 SD: 8.2 ES: 25 Very accurate load, maybe around 0.5-0.75 MOA. 175 gr Nosler Custom Comp 43.0 gr Varget LCLR Brass WLR Primer <------ Change Avg: 2446 SD: 12.1 ES: 36 This was just as accurate, but a little hotter. This also showed a little bit of pressure signs, mostly in the form of slightly flattened primers but also once or twice in an ejector swipe. I was not interested in the standard 100 yard grouping today. I was mostly just trying to see how it worked at distance, so I shot at 250, 500, and 750 yard steel. During a cease fire, the range officer went out and re-painted teh steel. Seeing a group was pretty easy when they were bright orange and had no other shots on them. I wanted him to get out and paint the 500 just to see, but whatever. Environmentals: DA: 3125 Temp: 81.8 Gun: 16" PredatAR 7.62 Vortex Viper PST 2.5-10x42 LT158 (SPR-S) Mount Other: Chrono: Magnetospeed V3 <-------- I used to use the Chrony F1. Weather: Kestrel 4000 Computer: Ballistics AE (iPhone version) Any other questions, please ask. |
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In accordance with my own 'rules' governing testing (I semi-ranted about chronographs in ML's 'ES help' thread), I've added which chronograph was used for each test that I've submitted here.
There are only two options, as I only own two: Shooting Chrony F1 or MagnetoSpeed V3. |
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Rifle: LaRue Tactical OBR 7.62 16" Scope: Bushnell Elite Tactical 6-24x50 FFP G2DMR Cartridge: Bullet: 155 grain Palma HPBT Sierra Match King Brass: Lapua .308 Primer: CCI #200 Large Rifle Powder: IMR XBR 8208 42.6 grain OAL: 2.775" 3-Round Group Result: .316 MOA http://i1291.photobucket.com/albums/b555/Hollywood_Shooter/OSS1_zps4b036672.jpg ETA: I'm off to post in "Outshoot the Shootist" View Quote Was this palma bullet the Sierra model 2155 or the 2156? (I think they're both Palma bullets, but the 2156 has a longer OAL IIRC) |
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