Campfire Regular. Even though the heavier 7mm bullet is rated at a high BC it doesn’t have the initial velocities to maintain the energy and speed down range. Since its introduction in 1962, the 7mm Remington Magnum (7 Rem Mag) has developed a strong following, becoming the most popular metric hunting cartridge in the United States. I had a Remington 7 in 7mm SAUM. I have a new 7mm SAUM I’m planning to run 180 Scenars or Bergers in. So a 30" barrel may get me to around 3050fps. So velocity wise it will run with a SAUM but should require less trimming, and is made by ADG brass which from all reports is very uniform and strong. COAL of 2.900-2.930 depending on bullet. Max load 2980 fps My current load is 180 Hybrids / Retumbo @ 65.9grs 2900 fps. 7mm Rem Mag vs 300 Win Mag: Cartridge Sizes. 7mm SAUM in S/A best expected velocities. Most of them are shooting 150 and 160 Accubonds. Winchester's 300 WSM and 270 WSM are solid rounds that sell well. Also ADG will be coming out with 7mm SAUM brass later this year. #24 Post by BRETT B » Mon Nov 09, 2015 5:19 am I think 2209 gets its Barrel Burn reputation from people pushing the Velocity envelope with certain cartridges!! I'm running a 180 at 2900fps from a 24" Barrel. I’ve got a factory Rem 700 SA 7mm SAUM with 24” sporter barrel. Ct. L. lhead71 OP. OP. But the more I look into the 7mm SAUM the more I want to start organizing a parts list for building one. Alpha (ADG) seem to be pretty good, however they don't have enough case capacity to really get velocity without pressure. I,m thinking of building up a 7mm RSAUM (or possibly 7 WSM) strictly for 1000yd BR heavy gun. 7mm SAUM Cartridge Information. The load manuals also showed that the SAUM would out-perform the 280 Ackley Improved with almost identical charges. Not sure why, but it's different than Norma/Nosler 7mm. However, to achieve its small velocity advantage, the larger 7mm WSM had to burn 7-10% more powder than the 7mm SAUM. I shot a lot of 139gr SST with RL-17. The SAUM line of cartridges are on life support and long term success doesn't look good The difference in velocity between the 7mm SAUM cartridge and the 7mm Winchester Short Magnum (WSM) is less than 50 … Posts: 855. You can see some of the differences between the .300 Winchester Magnum and 7mm Remington Magnum cartridges in the photo below. (The 7mm WSM has 81.0 grains of capacity vs. 73.6 grains for the 7mm SAUM.) It was designed specifically for the Remington Model Seven Magnum rifle, and intended primarily for long-range hunting use. A cartridge DESIGNED to fling long, sleek, .277 cal 175gr hunting bullets (about the equivalent of 180gr 7mm bullets) at the same velocity the 7 SAUM shoots 7mm 175gr bullets is very intriguing. This seems to shoot well and holds up longer. It also looks like the Reloader 17 powder was designed for the short action mags and should provide great velocity for the Berger 180g bullets. I'm helping a buddy build a mid-range all around mountain rifle in 7mm SAUM. Remington countered with the SAUM line. Remington introduced the 7mm Short Action Ultra Magnum (SAUM) cartridge in 2002 to compete with the 7mm Winchester Short Magnum cartridge. 0.408 COAL: 2.750" Barrel Length: 24" Case: R-P Twist Rate: 1:9.25" Charge Velocity Charge Velocity Load Powder (grains) (fps) (grains) … They are very similar in performance. I have new ADG brass and a ton of R22 that I had planned on using here. We were surprised that the chrono confirmed the velocity we estimated. However, to achieve its small velocity advantage, the larger 7mm WSM had to burn 7-10% more powder than the 7mm SAUM. I'm thinking this could be a nice mountain rifle. are you shooting your mouse gun? 7mm SS vs 7 SAUM. The 7mm WSM is on the fence, it might be a succcess, it might die. Is 1500 rds about right? 7mm Bullets . lhead71. Re: 7mm SAUM + 180 Berger Hybrids We ran some rounds through LVMikes chrono with my 6.5 CM match rifle, Dane's 7mm SAUM and LVMikes AI tight bore .308 Win. I have have two 7mm SAUM's, both short actions, and if you chamber a round and decide not to fire, you'll end up pulling the bolt. After hearing/reading so many positive reviews on the 7mm 120 grain NBTs, I tried them out last year. Larger velocity differences are however seen when comparing the 22” barreled Model 7 to the 24” barreled Winchester M70. Tell me about your 7mm SAUM's. Even though the heavier 7mm bullet is rated at a high BC it doesn’t have the initial velocities to maintain the energy and speed downrange. Load data seems all over the place on this one, wondering if anyone here is running the same. The SAUM cartridge works great at pushing these 6.5mm 140 grain high BC bullets at great speeds with lots of energy. How low have the velocity spreads been? However, to achieve its small velocity advantage, the larger 7mm WSM had to burn 7-10% more powder than the 7mm SAUM. I'm thinking of going with the 7 SAUM instead of 6.5 SAUM for a new build. I shot 3 bucks last year and had great performance on all of them. 6-8 grs. That being said, my eye is firmly on the new 6.8 Western. Any othe rinfo or tips on building a 7mm 1000yd gun? With the heavier, I used some W780, but did so much hunting on whitetails with lighter bullets, never really settled on something. Posts: 855. 7mm Remington Magnum (7 Rem Mag) Barrel Length Versus Velocity. For a visual: 7mm SAUM with 180 Berger hybrid at 2.950 OAL. Re: 7mm SAUM any issues? I was wondering what guys are getting for velocities. I look forward to the even smaller targets NOT! Ct. 2209 can burn a Barrel QUICK in over bore cartridges if you start squeezing for a bit more velocity ( eg , 284 @ 2900+ or 6.5x47 at 2900+) . Putting it in a Manners SL that’s inlet for M5 DBM, and will use APA RTG DBM and Accurate Mag 3 round WSM mags, which allow 2.96-2.98” OAL. It is a Rem 700 with 24 " barrel. Best bet seems to be Norma 300 SAUM necked down to 7mm. more powder than a 284 I'm thinking it will be between a 284 and a 7mm WSM. I have just started some more load development for my 7 mm SAUM that has been a safe queen for rather too long. See you there. Shop Nosler Products. The SAUM is a very efficient case. This is why necking the 7mm SAUM cartridge down to make 6.5 mm makes so much sense. Trying to get some real world feedback on bullet performance on mule deer, elk, sheep, antelope, bear etc. This is why necking the 7mm SAUM cartridge down to make 6.5 mm makes so much sense. I know some users on hunting forums report better barrel life but that's not a major concern. The SAUM is a very efficient case. I did not look for velocity only accuracy. 7mm Remington: SP: 160: 2961: 2887 . Looking back through some of my loads I have had very good luck with IMR-7828 with different bullet weights from 154 Hornady SST's, Sierra 168 Match to Berger 180. I just got mine and it seems to be 100-125fps slower than advertised. What is the real world velocity's you get with 140 and 160 grain bullets and in what barrel length. Muzzle Velocity ft/sec. These are shot out of short actions using Wyatt’s boxes. Campfire Regular. Had Remington initially introduced the .300 SAUM in a 24 or 26” barrel, the initial launch and marketing campaign may well have had a different result. 7mm SAUM Velocities question #8218444 11/03/13: Joined: Mar 2011. Being new, it can expect some support, as well. The 63.9 grains of H1000 gave me what I was looking for with both accuracy and velocity. The selection of high BC bullets is much better for 7mm. RIFLE BALLISTICS. I have a factory Remington 700 BDL in 7mm Saum. In short, like the 7mm Rem Mag, the .300 Win Mag is an excellent cartridge that packs more performance than the .30-06 Springfield into a comparably sized package. But what is done is done. I have a few heavy 7mm barrels laying around, not being used. In fact, the difference in published velocity is often smaller for the 300 WSM vs 300 Win Mag than the 7mm WSM and 7mm Rem Mag. RL-19 or 22 may be good. IMO- If your shooting past 1000 yards the 7mm is a better choice. 7mm Mashburn Super Magnum and 7mm-.300 Weatherby (both based on the belted-magnum case and required 3.600-inch length actions) failed to gain widespread acceptance. John Skowron HANDGUN BALLISTICS. I’ve chambered several 7 SAUM’s with 20-22” barrels for myself and others for hunting rigs. I will be there, Saum in tow first baptism in a formal comp. My personal SAUM 22” Proof Barrel gets 2990 with 63 GR RL26 and 150 Accubond. The rifle is a Remington 700 Sendero aquired in 2004. I'm looking at one real hard with a 22" barrel but also found one with a 24" barrel. But I'd say the heaviest 28-30" barrel you can use. According to the load manuals, the 7mm WSM offered a bit more velocity than the 7mm SAUM. Who has been using a 7mm RSAUM for 1000yd comps? Hopefully you're using a long action, I'm using a short and I would almost have to single load to use the 195's. (The 7mm WSM has 81.0 grains of capacity vs. 73.6 grains for the 7mm SAUM.) The 7mm SAUM has a reputation for being easy to load using medium to slow burning powders. EDUCATION 101. BuzzH and his wife kill so many elk with their 7-08s and 140 grain Accubonds, that I'm thinking about taking my 7-08 this year instead of my 7 SAUM. 7mm Reloading Components. According to the load manuals, the 7mm WSM offered a bit more velocity than the 7mm SAUM. (The 7mm WSM has 81.0 grains of capacity vs. 73.6 grains for the 7mm SAUM.) The SAUM cartridge works great at pushing these 6.5mm 140 grain high BC bullets at great speeds with lots of energy. When I had my 7 SAUM with 24" barrel: Either Rem or Norma 7mm SAUM brass 162 Amax / H4350 @ 59.0grs Max load 2995 fps 162 Amax / H4831 @ 60.5 grs mild load 2850 fps 168 VLD / H4350 @ 58.4grs. 0.266 Bullet Style: TSX BT Primer: Fed GM215M B.C. Remington 150 grain factory loads shoot really well and deliver around 3,070 feet per second. 7mm RSAUM Bullet Weight: 150 gr Case Trim Length: 2.025" S.D. I was very happy with the velocity I'm getting with my 6.5 CM and 139 Scenars. Not a insurmountable problem, but a pain none the less. The gun has a Lawton SA 7500 dual port, 30" McGowan barrel. It printed groups of .2 to .3 MOA and a conser- vative 2,920 fps with standard deviation (SD) at 6 fps. Thread starter Willow; Start date Apr 6, 2020; Willow. 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