98Z5V Posted September 20, 2015 Report Share Posted September 20, 2015 (edited) The "if you dare" is the pertinent part of my post above ^^^...You are, after all, the guy that claimed an accuracy improvement from a 0.60"-something group, to a 0.18" group. With two rounds...Your proof was two rounds... Edited September 20, 2015 by 98Z5V Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted September 20, 2015 Report Share Posted September 20, 2015 Breast, shoot a 10-round group @ 100 yards. Post the picture. Normal cyclic rate, not 3 hours on the range waiting for cold-bore shots. Put that pic up, if you dare, and you'll have my interest. Video of it would be preferred. :)That would be a "productive" way of showing us how all this light weight stuff performs............... Quote Link to comment Share on other sites More sharing options...
planeflyer21 Posted September 20, 2015 Report Share Posted September 20, 2015 Heck, I'd build one that light if it would group a repeatable 2 MOA at 100 yards! Quote Link to comment Share on other sites More sharing options...
breastroker Posted September 27, 2015 Author Report Share Posted September 27, 2015 Only one 10 round dump using 168 grain Federal SMKs. this was before barrel started shooting better. Still under 2 MOA at 100 yards. This rifle likes 175 grain SMKs much better. Since there were 10 rounds in magazine a couple went through same holes. This group was about 50-60 seconds, not super fast but not slow either. About as fast as this ole man could get the point of aim back. Recoil was actually pretty hard as I hadn't adjusted the gas block yet. Rifle is at 84.85 ounces right now, getting my titanium carrier with new bolt next week. So will be about 5.1 pounds without scope, still using my Vortex scope so add another 24.5 ounces, total with scope 106.1 ounces or 6.63 pounds. Looking hard for a 30 mm tube scope with at least 14 power and weight under 16 ounces. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted September 27, 2015 Report Share Posted September 27, 2015 Looks like that's not a 0.18" group, right there. My point exactly. I'm seeing 8 holes in that target, myself, but what are the black stickers for? Those really widen the group out... Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted September 27, 2015 Report Share Posted September 27, 2015 I think I can see ten there, a little more weight would help get back on target faster. More weight would help with the recoil as well, then you could leave the gas up a bit and maintain reliability. Pretty good for a lightweight shoulder bruiser though, just don't develop a flinch ;) Quote Link to comment Share on other sites More sharing options...
planeflyer21 Posted September 27, 2015 Report Share Posted September 27, 2015 2 MOA...very acceptable IMO!I think I can see ten there, a little more weight would help get back on target faster. More weight would help with the recoil as well, then you could leave the gas up a bit and maintain reliability. Pretty good for a lightweight shoulder bruiser though, just don't develop a flinch ;)I'd like to see a similar setup in 6.5 Creedmore. That may help with the shoulder serving as an anvil. Quote Link to comment Share on other sites More sharing options...
blue109 Posted September 27, 2015 Report Share Posted September 27, 2015 I'm happy with 2moa at a steady pace. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted September 27, 2015 Report Share Posted September 27, 2015 Same here... Quote Link to comment Share on other sites More sharing options...
breastroker Posted October 3, 2015 Author Report Share Posted October 3, 2015 (edited) Look, I just don't see the need for 10 shot groups, besides that's $15 worth of ammo. That 10 shot group was with ammo that is NOT the most accurate in my barrel, and the barrel was NOT broken in at that point. I think those were #30-39. Got much more accurate after #61. With my 11.80 ounce titanium carrier and bolt group rifle now weighs 5.1 pounds. I was really surprised at the kick when the gas block was open. After 4 adjustments kick more like a 6.8 SPC with a flash hider instead of a muzzle brake. NO flinching, no huge kick. That was the whole purpose of cutting half a pound off the BCG. A hundred pound person could fire this one without a problem. Also zero failures to feed, zero failures to fire, zero failures to eject.I put a JP Enterprise titanium firing pin into the BCG, wanted to see the accuracy difference from my other lower with SSA-E trigger and if the polymer hammer had enough oomph to fire the round with half the weight of the titanium firing pin. Group size just a tenth to quarter MOA more than the SSA-E trigger and zero failures to fire, or any problems.I admit to being cheap, splatter targets are close to $1 each, so if I see a splatter target on a frame I use that one, heck I even dig in the trash barrels to get the dots people throw away. The target was on the First of October, about 90 degrees with winds 15 to 20 with gusts to 30. They shut down the range when over 25 so I knew time was limited. That was a semi cold barrel shot as there is a break of about 15 minutes for people to put targets out. Kind of hard to call cold bore shot when ambient temp was 90 degrees. Edited October 3, 2015 by breastroker Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted October 3, 2015 Report Share Posted October 3, 2015 Here are a couple articles right up your alley Breastroker; http://www.recoilweb.com/preview-bentwood-gunsmithing-oip-carbine-pound-for-pound-73217.htmlhttp://www.recoilweb.com/preview-roll-your-own-lightweight-ar-15-73205.htmlYou have to buy the magazine to get the whole article though...........With your posts, d. wilsons lightweight BCG coming out, and now these articles I'm feeling myself pulled into a lightweight AR15 build...... Quote Link to comment Share on other sites More sharing options...
breastroker Posted October 4, 2015 Author Report Share Posted October 4, 2015 I have to laugh as my AR 15 in 6.8 SPC weighs less that both of those rifles, with a legal 16.1 inch barrel. No super light 223 round, I shoot the Hornady 120 SST and the Berger 140 VLD.Just got the Bad Ass titanium 0.750 gas block @ 0.60 ounces and put in a lighter hand guard. New weight is 3.426 pounds. I have to admit with a rifle that weighs LESS than the Ruger 10/22 takedown it does have more kick than a stock 6.8. But I have a bad shoulder, kind of gimpy. I let veterans at the range shoot it, brings huge smiles to their face when they see the size of the bullets and how accurate it is. This one wears a Leupold with mount adds one pounds so 4.4 pounds with scope. Magazine weighs 2 ounces and 5 with 5 rounds.This was a pretty fast group, maybe under 30 seconds for the first 9 rounds. Point of aim was the X, last shot I moved point of aim about 1.5 inches left. Wind was 15 MPH from 270 degrees and temp was 100 degrees. Yeh I should have been half an inch lower but I am old. Quote Link to comment Share on other sites More sharing options...
breastroker Posted October 4, 2015 Author Report Share Posted October 4, 2015 It is easy and fairly low cost to build an AR 15 under 6 pounds. We are starting to see manufacturers advertise 6 pound AR 15's, they do call them SCR or scope ready rifles.I love that stock because it has NO AR TWANG, and is over a pound lighter that most buffer tubes with stocks.That one weighs a huge 3.5 ounces!Add just about any 6.5, 6.8, 270 Wolverine etc barrel that isn't bull barreled and under 2 pounds. Faxon makes some great light weigh barrels that shoot great, and Wilson Combat makes a true match grade 6.8 barrel that weighs 25.8 ounces. My barrel weighs 21.9 ounces.Add just about any receiver set that isn't hugely over weight. Put a carbon fiber or Bravo KMR hand guard on. Use a light weight carrier, such as JP LMOS or better the $140 stripped Young National Match lite carrier. It weighs about 0.1 ounces more than the JP LOMS but costs half.Actually if you use either aluminum or titanium lower parts and gas blocks you pay about the same or less than Novesky but cut many ounces. Actually it isn't hard to get to 5 pounds. But it is a PITA to get below 4 pounds. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted October 4, 2015 Report Share Posted October 4, 2015 [New weight is 3.426 pounds.Post full pics of it at that weight... Quote Link to comment Share on other sites More sharing options...
breastroker Posted October 4, 2015 Author Report Share Posted October 4, 2015 (edited) Since I had to remove the scope to put the new lighter hand guard on, I used the time to measure the rifle at the new lighter weight. Edited October 4, 2015 by breastroker Quote Link to comment Share on other sites More sharing options...
breastroker Posted October 4, 2015 Author Report Share Posted October 4, 2015 Since I had to remove the scope to put the new lighter hand guard on, I used the time to measure the rifle at the new lighter weight. Quote Link to comment Share on other sites More sharing options...
breastroker Posted October 5, 2015 Author Report Share Posted October 5, 2015 Just up on their web site, the first titanium AR 308 BCG for sale.Just listed by JL Billet a titanium bolt carrier group for sale @ $395 with bolt. Usually good bolts are nearly $200 so this is a very good price. The JP Enterprise 308 LMOS costs $470.95 and is much heavier.http://www.jlbillet.com/308-titanium-bolt-carrier-group/Biillet Titanium 308 Bolt Carrier Group with Black Nitride BoltMachined from 6AL-4V billet titanium to strict tolerances and PVD coated with Tribobond to increase surface hardness, ensure a long service life all while increasing lubricity.Ionbond’s Tribobond™ 43 DLC, a-C:H, is one of the most well proven DLC coatings for tools, industrial and automotive components. It combines excellent running-in properties with a good wear resistance and low friction properties. Tribobond™ 43 DLC shows excellent performance on industrial components in aerospace, transmissions, wind energy and roller bearing applications.Technical Specs 6AL-4V TitaniumIonbond-Tribobond CoatingMPI 9310 Tool Steel BoltBlack Nitride Coated Bolt4140 Machined Gas KeyGrade 8 FastnersMADE IN THE USA Quote Link to comment Share on other sites More sharing options...
planeflyer21 Posted October 5, 2015 Report Share Posted October 5, 2015 Titanium! Must...resist...the...power! Quote Link to comment Share on other sites More sharing options...
breastroker Posted October 5, 2015 Author Report Share Posted October 5, 2015 Just found the first company on the web selling my AR 308 titanium 11.90 ounce BCG.Just listed by JL Billet a titanium bolt carrier group for sale @ $395 with bolt.Usually good bolts are nearly $200 so this is a very good price. The JP Enterprise 308 LMOS costs $470.95 and is much heavier.http://www.jlbillet.com/308-titanium...carrier-group/I spoke with Andy of JL Billet, not shown on the web site but they will give a LEO and military discount. You might have to call in to get it on the first order. Remember this BCG does not come with a titanium firing pin and the POF roller cam pin. Quote Link to comment Share on other sites More sharing options...
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