survivalshop

The 18" was my first choice , but not crazy about the Mid length gas system in an 18" , nor do I want a Carbine length gas system of the 16" . My trouble with the 16" is , velocities are with in the 300 BLK range or close to it , so why bother ( with my 110 gr. Loads , that is )

Also look closely at the Base of the spent cases , looks like pressure ring at the web.

.25-45 Sharps, LOAD DATA, AR-15, 16.5" barrel, by Ken Kempa Reduce all loads by 5%, then work up slowly. All loads use Federal brass, Winchester small rifle primers. CED M2 chrongraph for velocities. Bullet Grains Charge (gr.) Powder OAL inches FPS ft. lbs. 3-shot Ave @100yd Barnes TTSX BT 80 23.0 Alliant RL-7 2.250 2,365 993 0.94 22.5 IMR 4198 2.250 2,505 1,115 0.84 22.4 Hodgdon H4198 2.250 2,467 1,081 0.92 Nosler Ballistic Tip, Varmint 85 26.5 Hodgdon H335 2.250 2,468 1,150 1.49 22.8 Alliant RL-7 2.250 2,267 970 0.88 26.5 Accurate 2230 2.250 2,406 1,092 0.98 22.4 IMR 4198 2.250 2,415 1,101 0.95 22.3 Hodgdon H4198 2.250 2,402 1,089 0.86 Speer SP 87 27.9 Ball, Factory Load 2.230 2,673 1,348 1.24 26.0 Hodgdon H322 2.250 2,693 1,369 0.77 Factory Ramshot X-Terminator 2.250 2,602 1,278 1.33 Barnes TSX BT 100 24.3 Hodgdon H335 2.250 2,233 941 0.93 23.5 Ramshot X-Terminator 2.250 2,108 839 0.69 24.7 Accurate 2460 2.250 2,204 917 0.94 25.2 Winchester 748 2.250 2,075 813 0.69 20.4 IMR 4198 2.250 2,246 952 0.82 23.0 Hodgdon H322 2.250 2,257 961 0.84 Nosler Ballistic Tip, Hunting 100 24.6 Hodgdon H335 2.250 2,230 938 0.53 23.9 Ramshot X-Terminator 2.250 2,106 837 1.03 24.5 Accurate 2230 2.250 2,214 925 0.71 20.7 IMR 4198 2.250 2,175 893 0.91 25.3 Accurate 2460 Quote: But we discourage loading bullets heavier than 87 grains. Bullets of 117-120 grains have a steep ogive, which do not provide a good "neck weld" in the chamber. Plus you lose significant powder capacity in the case with heavier bullets. The .25-45 Sharps, at reasonable distances, offers killing power and respectable velocity. But it is not a long range cartridge. We load our factory ammo with a maximum OAL of 2.250" in order for it to fit in the magazine of an AR. PLEASE DO NOT EXCEED THESE LOADS! Load #1 - CCI 400 small rifle primer and Sierra 70 grain Blitzking .257 bullet, Powder H335 - Maximum load 30.0 grains - expected velocity of 3100 fps (needs a powder drop tube) Load #2 - CCI 400 small rifle primer and Sierra 75 grain Hollow Pnt .257 bullet, Powder Western X-terminator - Maximum load 30.0 grains - expected velocity of 3100 fps (needs a powder drop tube) Load #3 - CCI 400 small rifle primer and Speer HotCor 87 grain .257 bullet, Powder H322 - Maximum load 26.0 grains - expected velocity of 2850 fps Load #4 - CCI 400 small rifle primer and Speer HotCor 87 grain .257 bullet, Powder H335 - Maximum load 28.0 grains - expected velocity of 2900 fps Load #5 - CCI 400 small rifle primer and Speer HotCor 87 grain .257 bullet, Powder Western X-terminator - Maximum load 28.5 grains - expected velocity of 2950 fps The Ramshot X-Terminator powder comes the closest of all of the commercial powders we've tested to the velocities achieved with our factory loadings in which we use factory OEM powders. We have heard from some shooters who have found that AA2250 yields promising results, but we have not yet tested it. I think I want a 20" Barrel , not my normal thinking but for this hunting Rifle Build , I think so .

What other twist rates are available & I'm wondering , which way to go, as far as twist rate ? 1-11, 1-8 ? Interesting , now more to look up or at . I also will build one , if I find the right Barrel & its twist rate ( all I need is a Barrel , 98 ). I also think that 100 gr, Bullet for Hunting , is more to my liking & the BC , but the 300BLK performs well with a low BC , so why not the 25-45. So much to investigate , there are plenty of Forums whee they are talking about this cal. back into 2014 . There is also , so many who say why , there was the same for the 300BLK & its a great cal. conversion for the AR . SRC has a 1-9 in a 16" , out of stock , but seems the 1-10 isn't the only one . https://store.srcarms.com/product-p/src25x45-1-9.htm

I'm also wondering why the 1-10 twist Barrel, why not something a little slower ?

I agree .

Looks like its showing high pressure signs , cratered primers around firing Pin strike .Could be just hot ammo , but its hard to tell , it also looks like the Primers are showing unseating , which if they are , is another sign of High pressure . They should reseat when case is forced back when fired , high pressure will not let that happen . This effect could be caused by a Head Spacing issue or just hot loaded ammo , COL or case too long .

My question is , why didn't they just say what was going on , with or with out the firearm being drawn ? From the story , it seemed they had plenty of time to say , we are apprehending a patient from such & such facility . You can't say there isn't precedence that people are being assaulted by anti Trump supporters , just by being white & the attackers are taking for granted , because of the color of his skin , that he voted for Trump . You pretty much read about it every day ! I'm not saying he did right or defending him , but there is a lot here , just like all the other BS we read from the news , that a lot is left out . I agree with the above , rule to live by .

Interesting read from Black Hole weaponry & the Sharps Barrels , like who makes them . http://blackholeweaponry.proboards.com/thread/1648/25x45

I just looked at Bullet availability & BC , big range of bullets & Manufacturers , 75,90,& 100 gr. are available , as is the 87 gr. soft tip , even a Swift Bullet co. with a Scirocco of the 100 gr. verity , with the highest I have seen in BC , .429 . I can see a lot of load development . Some of the Bullets we showing lower BC's then some lighter ones , but was not across the board for all manufacturers . I liked Nosler also , Game King 's looked good . I was mostly looking at Polymer Tips , because I don't like exposed lead on Bullets for auto feeing rifles . Have not even looked at Powers yet . Might wait for their new heat treated barrels , Robocop is speaking of . I would be willing to invest in one of Sharps new Barrels , if they need a Evaluator

Sharps has the RCBS Die set. http://store.srcarms.com/product-p/rcbs-dies.htm

The way I look at it is commonality of components with the AR 15 , mags, Bolt ,Brass . The Barrels all have to be changed to the new Caliber , some of cartages need special Mag's to work properly, limiting mag. capacity , not something you would worry about in a Hunting rifle , but commonality of Mags , is a good thing . , Larger faced Bolts different then the 5.56 cartridge , so I would be looking for something with the most commonality , much like the 300BLK . The issue I see with the 300BLK is Hunting range , as far as longer range , I love the 300BLK , but because of its .30 Diameter Bullet , it slows down pretty fast , sure you can hit with it out to some good range , but that doesn't mean its got good knock down power at that range . Your 6.8 SPC, 6.5 Grendel & many others need a larger Bolt face & changed mag or altered or reduced capacity , as with others . I suppose , ammunition availability would also be an important feature . The 25-45 Sharps is an interesting hunting caliber & I or we need to see how it stacks up to the others . I my self have some parameters , only thing I want not compatible with AR 15 components is the Barrel , like the 300BLK . I also have to look at Bullet configuration , ever with the 110gr. Bullet , the 300BLK is no speedster , not that its really needed , but the 300BLK was designed for a special purpose , big bullets , & very quit , all good & we know the 300BLK will hunt well , thats been proven , but its Ballistics do have limitations . I for one want to see what this 25-45 Sharps has going for it also .I like its speed & BC . http://www.gunsandammo.com/tactical/best-ar-15-cartridges-right-now/

Not showing up on the RCBS web sight .

They show Barrels for sale on their sight , are the ones you talking about different ?

Is it threaded in the Lower Receiver , to accept a threaded pin ? Or is it a split pin type ?

Did you watch the one video in there , that he had a RCBS three Die system for forming the Brass with an Expander first, then Sizing for forming the Case idea . Also he was using new , Annealed 5.56 Brass , easier on the Brass .

You won't wait long . Photo's of this Gas Block & its fitment ?

Wow , that was good . I wish more manufacturers would give interviews like that . Do you or can you make a 25-45 Sharps Barrel ? or is that their proprietary Chambering .

Interesting or is this just another 6.5 . Six part series on the Cartridge , AR15 by Sharps to shoot it & reloading it . I may have to look into this one a little more , I still have not picked a Barrel or Maker for my BRO build . (Click on the headers of the individual topics ) http://ultimatereloader.com/category/25-45-sharps/ Here is an article from the American Riflemen https://www.americanrifleman.org/articles/2014/4/17/the-25-45-sharps-a-new-old-cartridge/

None of this is new , but some may find it interesting. AMMUNITION, AR-15, RELOADING, RELOADING CORNER AR15 GAS SYSTEM ENHANCEMENTS, PART 2 MARCH 17, 2017 GLEN ZEDIKER 1 COMMENT Reducing the influence of excessive AR15 gas system pressure is most directly done reducing the pressure itself. Here’s how! Glen Zediker This is the second of two articles on ways to tame down an “over-functioning” AR15 gas system. Aside from running more reliably, reducing the evil influence of an overly-rapidly unlocking system improves cartridge case condition, which means longer case life. The first article talked about ways to increase the time the bolt stays locked, or delay its unlocking, however you want to see it. Going more directly to the “source,” there are also ways to reduce the actual amount of gas that gets to the bolt carrier key and that’s up now for this one. Here’s an adjustable gas manifold. It’s a way to restrict the flow of gases through the system. Don’t get too greedy! Make sure to err on the side of function. These are probably the single most effective means to tame over-function. Check this one out HERE. An adjustable gas manifold or “gas block” is an effective means to restrict the amount of gas that gets into the system. This device attaches at the port location, replacing the existing manifold (or front sight base if it’s a standard-configuration build) and will have some manner of valving function whereby propellant gases allowed to pass through the gas port in the barrel, through the manifold, and into and through the gas tube are restricted. Some incorporate a valve that regulates the passage dimension. Others provide a vent, more or less, to expel excess gas. I prefer the “valve-type” over the “bleed-off-style” devices. Installation is straightforward, and these are available from a wide array of sources, so it shouldn’t be hard to find one that will fit even a custom-profile barrel. Standard for this area is 0.750-inches diameter. What matters is that the inside diameter of the manifold matches the outside diameter of the barrel at the connecting position. There are different approaches to using this device but it’s really pretty simple. Figure out the minimum gas flow necessary to function the action and then open the flow-control screw adjustment a half turn more to give a little safety margin. Don’t get greedy. I shut one down all the way (minimum flow) and then open it up until the rifle functions. The only foible on an adjustable manifold is that it has to fit in with the architecture of the setup you have. A retro-fit requires removing any muzzle device that might be installed and, of course, removing and later reinstalling the gas tube (make sure you check that it isn’t binding). I have used other products that provide alternate means to do the same thing, like a gas tube with a valved adjustment mechanism. Sometimes something like that is best for anyone wanting to run a more standard gas manifold system. They work just fine, and dandy. There are other means for softening the system, and this adjustable gas tube is an example. Others include the “pig-tail” gas tubes that spiral around the barrel to increase tube length/volume. They all work… Other gas tube modifications that work have been those formed in a spiral that wraps around the barrel, and I’ve seen tubes with expansion chambers (area of larger volume) along the span of the tube. What’s happening with these isn’t reducing the amount of gas, it’s just giving it more distance or room to weaken its presence. The best solution I’ve yet encountered is fairly new and is an adjustable bolt carrier key. This requires no modification or labor about the barrel, and also works with virtually any AR15. Remove the old carrier key and replace it with the adjustable key. Here’s fairly new: an adjustable bolt carrier key from Sun Devil. David Beatty hit a long ball with this device, the ADIGS. I like it because it can be added to virtually any AR15 out there, even one that needs to maintain outwardly stock appearance. Works great. See more HERE. A good while back I talked about gas port pressure and propellant burning rates and cautioned against using a propellant on the slower-burning side of “suitable propellant chart” center. To reiterate, I don’t think any propellant faster than Hodgdon 4895 should be used, but I know full well I can safely extend that range one more step to say something like Varget or RE15 is the limit. Slower propellants create more gas port pressure because they peak farther down the barrel, nearer the gas port location. Related: I recommend to anyone who’s going to do a longer custom barrel to request that the builder relocate the gas port another inch forward. There’s more gas contained in a longer barrel for a longer time: more pressure hits the carrier key as a result. It’s common for an NRA High Power Rifle to get its gas port relocated forward another inch, or even two. The reason is because the 24-inch+ barrels we run “trap” more gas inside, which increases the pressure available at the gas port. The port farther forward gives more time and room (all the gas goes out when the bullet exits the muzzle). No doubt, if you load up an AR15 with a heavy carrier and related parts then combine that with a gas restriction device, the range of propellants can move one or more steps slower-burning. In any of my full-blown across-the-course race guns, I can construct and successfully deploy loads that would wreck a rack-grade AR15. Don’t mess with that. Enjoy smoother and “softer” function and the assurance that you can run closer to a maximum load without fear of the odd and inevitable “pressure spike” causing problems. That’s why to do it. The preceding was adapted from Glen’s newest book, Top-Grade Ammo, available here at Midsouth, click HERE to order. For more information on this book, and others, plus articles and information for download, visit ZedikerPublishing.com

Same here

I don't run any adj. gas blocks ,308AR's or AR 15's , the only one thats has adjustability is my Superlative Piston system AR 15 & that came that way , not that it needed it , but I don't run any Suppressed , that is a different ball game . They are not needed for action function , seems what I read ,most want them for reduced recoil , which in doing so can cause other issues . I could write a Chapter here on the pro's & Con's of them or the reasons why you might need one .

With all the new gadgets for the AR platform, you can probably make any AR ambidextrous , as said above , purchase one you can afford & swap the components out you want for your shooting style . Building a specialized Rifle will cost a bit more .

Your probably more then correct with that assessment . I would still contact them , maybe they have something in the works or can alter your for use in a 308 powered rifle .

My 300 BLK is a 16" , 1-8 Light weight , Wilson Combat barrel & shoots great with every bullet weight I have loaded for it .