survivalshop Posted November 3, 2017 Report Share Posted November 3, 2017 2 hours ago, bfoosh006 said: PSA sells the 6.5CM upper with a small FP and hole ... it is on the webpage and was confirmed by PSA on another forum. The PSA webpage says.... on the very bottom of the description ... Includes: High pressure/ small diameter firing pin bolt I will post photos of the differences later, the firing pin is different shaped, towards the tip..... as well as other info. That said... I believe I will try the .308 bolt. I have seen the difference , as you said , it should have came with one . Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted November 3, 2017 Report Share Posted November 3, 2017 58 minutes ago, Jsnake711 said: Right, but the other mags will not work correct? I will have to defer to those that have PSA rifles. With no set spec it can vary from rifle to rifle what works and what doesn't. Quote Link to comment Share on other sites More sharing options...
bfoosh006 Posted November 5, 2017 Author Report Share Posted November 5, 2017 My PA10 GenII works with ( in order of most consistent function as well as drop free ) Magpul 25rd, 20rd, and 10rd mags... and D&H 20rd and 10rd ( a tie between those 2 ) , Lancer 20rd and 10rd.. the .308 bolt kinda drags at times in the .308 uppers, but not as "bad" in the 6.5CM PSA upper ?! The IMI 20rd works well. The C-Products and Brownells ... while feed ok... are less reliable. And the Brownells spread the feed lips so bad, that when loaded with 20rds... insertion is frustrating ( as in slap the hell out of the base ) and drop free is never going to happen. Quote Link to comment Share on other sites More sharing options...
bfoosh006 Posted November 10, 2017 Author Report Share Posted November 10, 2017 I should be able to get to the range this weekend to try the OEM 6.5CM upper and the .308 Criterion at 200-300 yds. Sorry about the delays... fecking tons ( literally ) of leaves are now at the recycle depot.... Quote Link to comment Share on other sites More sharing options...
bfoosh006 Posted November 12, 2017 Author Report Share Posted November 12, 2017 (edited) A few other ammos tried... Federal 130gr Varmint HP ... big HP, I was worried it might not feed well, but no issues Creedmoor Sports 165gr SGK Edited November 12, 2017 by bfoosh006 Quote Link to comment Share on other sites More sharing options...
bfoosh006 Posted November 12, 2017 Author Report Share Posted November 12, 2017 PRIME 175gr BTHP... BTW the biggest .308 box of ammo ever... and 2 groups, different POA And the rifle as it will remain configured. Quote Link to comment Share on other sites More sharing options...
Jsnake711 Posted November 20, 2017 Report Share Posted November 20, 2017 (edited) I got a question about ballistics. I've looked And looke at ballistics tables. In using hornady black 168gr a max. And on the box it says a 1 inch drop at 200yds. In a few calculators it says around a 4 inch drop. I'm using a ar308 bushnell optics scope with a bdc reticle that is made for 168gr bullets. And it shows different bullet drop then both of them. Edited November 20, 2017 by Jsnake711 Quote Link to comment Share on other sites More sharing options...
392heminut Posted November 20, 2017 Report Share Posted November 20, 2017 Probably get a quicker response if you post your question in the Ammo forum. If you have the muzzle velocity for that round I can tell you what the tables in my Sierra reloading manual show for bullet drop. Quote Link to comment Share on other sites More sharing options...
shepp Posted November 20, 2017 Report Share Posted November 20, 2017 2 hours ago, Jsnake711 said: I got a question about ballistics. I've looked And looke at ballistics tables. In using hornady black 168gr a max. And on the box it says a 1 inch drop at 200yds. In a few calculators it says around a 4 inch drop. I'm using a ar308 bushnell optics scope with a bdc reticle that is made for 168gr bullets. And it shows different bullet drop then both of them. 2 hours ago, 392heminut said: Probably get a quicker response if you post your question in the Ammo forum. If you have the muzzle velocity for that round I can tell you what the tables in my Sierra reloading manual show for bullet drop. 100% Quote Link to comment Share on other sites More sharing options...
Jsnake711 Posted November 21, 2017 Report Share Posted November 21, 2017 23 hours ago, 392heminut said: Probably get a quicker response if you post your question in the Ammo forum. If you have the muzzle velocity for that round I can tell you what the tables in my Sierra reloading manual show for bullet drop. Would it be different in a bolt gun? because I see 2526fps on that round from a18"barrel. Quote Link to comment Share on other sites More sharing options...
392heminut Posted November 21, 2017 Report Share Posted November 21, 2017 (edited) The action type should have very little if any difference on the ballistics. My Sierra tables show a 12.36" drop at 200 yds. for a 165 grn, hollowpoint boattail and 12.01" drop at 200 yds. for a spitzer boattail, both at 2500 f.p.s. 2600 f.p.s. is about an inch less drop for both bullets. This is actual drop from the muzzle, what you are probably looking at is the drop at 200 yds. for a 100 yd. zero. The 4" drop at 200 yds. is about right for a 100 yd. zero with that bullet at the velocity you stated. Edited November 21, 2017 by 392heminut Quote Link to comment Share on other sites More sharing options...
Jsnake711 Posted November 22, 2017 Report Share Posted November 22, 2017 thank you heminut for that information. Quote Link to comment Share on other sites More sharing options...
bfoosh006 Posted December 10, 2017 Author Report Share Posted December 10, 2017 Atlanta Arms 175gr TMK Atlanta Arms 168gr BTHP Atlanta Arms 168gr AMAX Creedmoor Sports 150gr SMK Quote Link to comment Share on other sites More sharing options...
bfoosh006 Posted December 12, 2017 Author Report Share Posted December 12, 2017 (edited) Truing / Lapping the receiver face. I want to show how little material is removed. This first photo is from the internet... It was trued with a lathe, and he used a dye to monitor the progress... you can image how little thickness a dye would add. You can image how going deeper with the cut , by just a few thousands will alter the receiver face. Allowing it to be truer. Edited December 12, 2017 by bfoosh006 Quote Link to comment Share on other sites More sharing options...
bfoosh006 Posted December 12, 2017 Author Report Share Posted December 12, 2017 When you have completed the Lapping / Trueing it will look like this... ther is nothing to be gained by going deeper with the lapping. ( My completed receiver face, is the first photo ) The next photo is mine as well.. it is hard to see, but you can just make out the beginning of it at about the 8 o'clock position. With no lapping at the opposite side. Quote Link to comment Share on other sites More sharing options...
bfoosh006 Posted January 7, 2018 Author Report Share Posted January 7, 2018 Soooo.... I bought another complete PA10 lower.... is has a longer carbine buffer tube, a regular AR15 length buffer, and a longer buffer spring then my first PA10 lower. I haven't measured them yet... but is sure looks like a Armalite .308 length buffer system. So... prior to any purchasing of buffer parts, I strongly suggest you post photos of what actually came with your rifle. The "new" longer length buffer tube is marked "PA10" with the PSA "Logo" as well ... the buffer is AR15 length ( no markings ) as hand compared to a spare AR15 carbine buffer I have laying around. Here are some side by side photos for comparison...the "New" sized buffer system is on the left. The older "DPMS" style buffer systems is on the right. I am now wondering how many times the different ones have been used... and how many times it may have caused mayhem and confusion.... even through this thread. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted January 7, 2018 Report Share Posted January 7, 2018 Update in your other thread, on the specific issue... Quote Link to comment Share on other sites More sharing options...
bfoosh006 Posted January 7, 2018 Author Report Share Posted January 7, 2018 27 minutes ago, 98Z5V said: Update in your other thread, on the specific issue... Thank you updated response as well. Quote Link to comment Share on other sites More sharing options...
GoodByNAair Posted March 28, 2018 Report Share Posted March 28, 2018 @bfoosh006 and all others that added to this thread. Just read this font to back. Awesome right up and great info. My father just put together a PA10 gen 2. His is already up and running, am working mine right now. I will use this thread for all its great tips and tricks. Thank you for all the time and Brass you spent making this very useful thread! I will test my gun in its stock forum, but that ajd gas block is on my to do list. I will also add a thread to the PSA sub forum when we have more data on both guns. Quote Link to comment Share on other sites More sharing options...
bfoosh006 Posted April 2, 2018 Author Report Share Posted April 2, 2018 You are welcome from all of us !! Quote Link to comment Share on other sites More sharing options...
bfoosh006 Posted April 15, 2018 Author Report Share Posted April 15, 2018 FYI, I will be adding the results from a PSA 20" Hvy profile barrel complete rifle , Rifle length gas system soon ... and including any improvements added by PSA. Quote Link to comment Share on other sites More sharing options...
Jsnake711 Posted July 5, 2018 Report Share Posted July 5, 2018 Bfoosh, Where did you pick up your barrel? Quote Link to comment Share on other sites More sharing options...
bfoosh006 Posted July 5, 2018 Author Report Share Posted July 5, 2018 (edited) 11 hours ago, Jsnake711 said: Bfoosh, Where did you pick up your barrel? Which one ? The PSA 20" HBAR from here... https://palmettostatearmory.com/psa-20-rifle-length-308-win-1-10-stainless-steel-barrel-516446237.html The 18" Nitrated SS Hybrid Criterion from MSR Arms... via here... at the bottom of the link..http://criterionbarrels.com/barrels/.308_AR/ar-10-hybrid I kind of wish I had bought a 20" or 22" Nitrated SS Hybrid... just for the added velocity, but the 18" is a very nimble package. Edited July 5, 2018 by bfoosh006 Quote Link to comment Share on other sites More sharing options...
Jsnake711 Posted July 8, 2018 Report Share Posted July 8, 2018 Well, I got some good groups from the psa ss barrel using varget, and SST 165gr bullets. Before i was using hornady sp 165gr, and imr4064. And was getting 1.5" groups. I must say I'm still thinking about a criterion barrel lol! Here's the 4064, 42.5gr And then the varget 44gr... big difference. Quote Link to comment Share on other sites More sharing options...
Jsnake711 Posted July 8, 2018 Report Share Posted July 8, 2018 (edited) Nor sure why the images are flipped. Edited July 8, 2018 by Jsnake711 Quote Link to comment Share on other sites More sharing options...
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