survivalshop

Looks well made & I can see how the trigger works , some what . Theres seems to look like a trip lever at the back of the disconnector. Interesting .

I was wondering when some one would notice the primer difference , interesting performance between the two . The WW 's are older, so that may be the difference between the two. Those numbers in relation to the primers is why I always use different primers when working up a load , be it for a hunter's ammo or for my use. One other thing to consider is case weight , all the ones in the test ammo were with under two grains in weight of each other , so I had as much of a control test as I could & of course all powder charges were hand weighed with my Pact digital scale . You can also notice that every barrel/chamber has a sweet spot in load development , for a particular bullet , powder & primer combo's can make a round shoot very well @ a particular Velocity, not to mention COL , which we are kinda stuck with Magazine fed rifles for max COL. Go one way or the other, with charge weight & or Primer & you can lose that sweet spot & grouping ability . I'm already making loads to see if I can fine tune what I have . If you wondered why I didn't test the 40 gr. of WC 846 with the CCI primer out of the 20" , its because I only had three left & all my testing was done with five shot strings & wanted all testing to be the same .I will add them to my next testing . Just for those who don't know what barrels are on these rifles , 16" & 20" are both Krieger Criterion HB's 1-10 twist, rifle length gas systems. I also found it odd that two different powders in two different barrels , produced close to the same ES & SD .

Thanks , I was having a wonderful day till you brought that up .

Nice , I like how its not Aluminum , though I have some that work fine , I'm a steel gas block kinda guy . I'm sure you will give a full report here .

Put some Chrono Data in the reloading section today from both rifles. Interesting results , I didn't do any Barnes Bullets .

If you have Firearms , a Safe is a must , for a lot of reasons . Nice score , I have to get a BCG for my BRO AR 15 build , so they will get some profits shortly to help pay for your safe <thumbsup>

I went to the range today to test some reloads & it was kinda windy , so I didn't try to compare groups , they both shot about the same with the 20" having a little better results , but I was not trying too hard in the wind . Four different loads two different powders , two different Primers & of course two different bbl. lengths.& all 168 gr. SMK's. . COL approximately 2.795", Shot @ close to 100 Yrds. Temp. 80 deg. BARREL POWDER/CHARGE AVERAGE VELOCITY ES SD Primer # 1- 16" bbl. - 40 gr. WC 846 2351 fps 18 fps 7 fps CCI #2- 16"bbl. - 40 gr. WC 846 2368 fps 44 fps 16 fps WW # 3 - 16" bbl.- 42.5 gr. IMR 4064 2476 fps 46 fps 15 fps CCI # 4 - 16 " bbl.- 43.5 gr. IMR 4064 2576 fps 48 fps 18 fps WW # 5- 20 " bbl.- 40 gr. - WC 846 2473 fps 38 fps 13 fps WW # 6 - 20 " bbl. 42.5 gr. IMR 4064 2606 fps 19 fps 7 fps CCI # 7 - 20" bbl. 42.5 gr. IMR 4064 2632 fps 36 fps 12 fps WW # 8 - 20 " bbl. 43.5 gr. IMR 4064 2701 fps 39 fps 16 fps WW The WW primers are on the old side , twenty years old , could be more . The CCI 's are a year or two old .I had no problem putting bullets in the same holes , even with the wind with # 1 in the 16" barrel & # 6 with the 20 " barrel. I had slight primer cratering with the 43.5 gr. IMR 4064 in the 20 " bbl. but none showed up on the ones shot out of the 16" bbl. . another thing with the 20" bbl. , the brass with the 43.5 grs. of 4064 were ejected to the 2 o'clock position . all the 16 " & all other 20" brass were all ejected @ 3:30 position. With the WC 846 , I can maybe go up another grain in powder , but even that may show some signs of excessive pressure & may degrade grouping . We will see because I have to do some tweaking to squeeze the most out of the loads & I haven't got any 175 gr. Bullets yet .Can't wait to see how they shoot .

That's why I roll my own. I think once , if ever , the ammo curse we are going through , eases up , all of it will come down in price . The 300BLK has become so popular , its supply is nowhere near demand .

Ask someone there to measure the Upper Receiver ,the measurements are on this sight , I think there is a Sticky on it .

Ya , what's with that ?

Not sure what receiver height this is ,but maybe you could contact them & see, they are in stock. http://www.brownells.com/rifle-parts/receiver-amp-action-parts/receivers/upper-receivers/ar-308-upper-receiver-prod64581.aspx

Brownells has the 220 & 125 gr. in stock http://www.brownells.com/ammunition/rifle-ammo/300-blackout-prod60494.aspx

Nice !

From what I have been reading , the Barnes bullets don't do well at longer ranges , so I may be leaving them out of any testing , for now ,that is . I still have to Chrono them though .They say its some thing about the groves on the bullet , disrupts air flow ?

AN M16 Bolt Carrier also . Its a Full Auto Sear Trip & pin. I wasn't going to open my mouth , even though I knew he was talking about you , 98.

Papst Blue Ribbon

The POF rifle is AR15 , I used it to show that the rail height on the JP hand guard is the same for both the AR 308 & the AR 15, its the DPMS 308 Upper is a lower rail height. I can tell you the TM 10 from Tactical Machining is the same as the low DPMS , its in the top photo. I had a SI Defense Billet upper that is the old height & swapped it for the TM. & came up with a lower Upper rail with the JP hand guard. I think it would be an easier time finding & changing out the hand guard . Finding a 308 Upper may be a problem & I also like the JP hand guard & will use another one on my BRO build . You can use my SI Defense Gen. II, Upper till you find one , if you want , its just sitting here .I have no Plans for it at the moment .

I think I got Sun burnt washing my truck today. This is one behind my house. He's fishing .

SS should be treated no differently , I would imagine . Good advice is to follow the manufactures instructions . I just clean & shoot and that's fun.

Seems like you don't have to worry about the BATFE thinking its an NFA weapon , its got the firing rate of a bolt action <lmao>

See if Sig sells different upper assemblies . Its probably proprietary, would be my guess.

Might be a protected Owl ? Its getting in some where , close it up .( after he's out , that is )

I believe that third position is going to put this trigger system in the NFA category , BATFE letter or not , wouldn't be the first time the agency changed its ruling after roll out .

Trigger finger cold <dontknow>

I've been doing some research on long range shooting & I was going to (& have been ) make the same load up for both rifles . I no longer believe I will be getting the most out of the platforms by doing that & will be making the best shooting load for each rifle , if that's the way it turns out I already think the shorter barrel likes the WC846 better than the IMR 4064 . ( might have some thing to do with burn rate/barrel length ?) The 20" doesn't seem to mind ether Powder so far , I believe . My testing tomorrow will give me some better info . Check this one bullet type, I have a few left , shoots very well from the 20". Its a stepped boat tail design, 170 gr. left to right ,168 Hornady,168 SMK, 170 Stepped BT & 168 Barnes Tac X