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GTNMUDY

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Everything posted by GTNMUDY

  1. GTNMUDY

    308 win reloading questions

    Ain't that the truth. Tomorrow is going to be the day that ends it all. I recrowned the barrel (factory crown really didn't look right to me) Going to the range tomorrow, with factory ammo (Serria match 168), different scope, new 3 lb drop in trigger and re-crowned barrel. If it don't shoot right it's going away. Cluck, cluck
  2. Who is reloading the 308 for the AR10 platform? I'm not new in reloading been doing it since the 70's, but I also don't consider me a expert. I have the following: 1:10 twist, 18" barrel. H4895 powder CCI primers Cronograph Tried 150 gr factory and reloads and the groups a 200 yds are all over the paper. Loaded up some 180 and the groups are better at 200 yds. but not what I am looking for. Bought some Hornady 168 BTHP, loaded upp 43gr of H4895. My first 2 shots were touching at 200 yds then all went to heck. Measured about 2800 fps (+/- 40 fps) through the reloads. Tried cleaning and letting the barrel cool down still my groups were 2-4" MOA. Came back reloaded the 168 gr with 40 gr of H4895, ( each load was weighed and trickle grained to be exactly the same), 2400 FPS, again first 2 shots were touching and then the started to spread. I know it is not my scope (Vortex PST gen II, 5-25 x 50 ffp) because the 100 yd groups are right on. Was talking to another guy at the range that also reloads and shoots 308 in the AR10 platform. He was suprised that my groups were that far off using a 168 gr bullet. He suggested using Alliant 2000-MR ball powder. He uses it and he claims that with that powder, my bullet and twist rate he can drive tacks at 200 yds. Does anyone have a pet reload for their 308?
  3. GTNMUDY

    308 win reloading questions

    Well i have exceeded the 100 round mark some time ago. I realize that PSA is not the best out there. However for the price I paid for it I guess a $300 barrel would then make it a still favorite price.
  4. GTNMUDY

    308 win reloading questions

    Ok, guys. I give up... Scrubbed my bore before going to range. First 2 shots at 100 yds were touching.Second shot low right about 4 inches. Third shot low left 4 inches. Cleaned bore let cool down. 4th shot right of first 2 shots. 5th shot left high. Using new rest setup (coldwell bench bags) Took out my 30 yr old Rem 700, 7mm Mag. first shot ." high at 100 yds, next shot touchting first shot. went to 200 yds, first shot low right, adjusted second shot low of bulles eye.3 and 4th shot right next to the 2nd one..Looked about a 1-2" MOA. So I know it was not me this time. Thinking of ditching this barrel and either going with another 308 or 6.5 creed moore. Anyone have a favorite manufacture? Looked at BCA, faxon, Brownells. Also, what is hand lapped boring? I know what lapping is and by hand, but the bore?
  5. GTNMUDY

    308 win reloading questions

    Hope you figure it out. I used ball powder because it would compact better that rod type powder. Know that a liquid would be better but your close. If you really really want a liquid, I guess I could measure it out. Was in a hurry last night getting ready for the range today.
  6. GTNMUDY

    308 win reloading questions

    Ok, just because you asked. Winchester nickle case: case weight 162.8 grs, volume 3.845 Grams Federal: Case weight 182.0 grs, volume 3.835 Grams I used H335 ball powder . Don't know what this means and I may not really care. But you asked for it so you can figure out the what, why and how come it is what it is
  7. GTNMUDY

    308 win reloading questions

    Ok, guys looks like I sparked some interest. Anyway, got some Varget so I'm reloading several powders and weights. Once I get something dialed in my next step would be to measure inside case volume. Going to the range tomorrow. Hope something good come my way.
  8. GTNMUDY

    308 win reloading questions

    well, I know that's the way to tell, but I did not want to measure each case with water or other liquid. I just dont have the time or patience or tools to do that. I thought I would just try the weigh first and see if it made a difference and it looks like it did for me. I guess my question to you is. Do you know how it's done? I know how to CC racing car heads but dont have a clue on brass cases
  9. GTNMUDY

    308 win reloading questions

    That's a slower burning powder that I have been using. Might make the difference.
  10. GTNMUDY

    308 win reloading questions

    Well, I have been collecting range brass for about 30 years now. Got about 5k cases. I just went through about 1k to find enough same size brass to reload for testing. 308 cases again the bulk of them are Federal but also collecting range brass and the Winchester nickle plated cases has the highest volume 163 gr compaired to FC at 181 gr.
  11. GTNMUDY

    308 win reloading questions

    Well, took a step in the right direction last night. I weighed my empty brass for 308 and 223. You would just think that brass is brass and all the same size. Boy was I wrong. I found that most my brass was either 181gr or 182gr. found some other stuff that was over and under but got enough of these 2 weights for testing. Also weighed my .223 brass. Had stuff from 110 gr to 93 gr. Sorted out a bunch of 96 gr and reloaded some H4895. My god I found the magic bullet. 4 shots at 200 yds you could put a quarter over them all. Never dawned on me that case size matters. Yeah, I have read about it and case pressure, but it really didn't effect my shoot at 100 yds and less. Since I have started getting into long range shooting I understand this stuff matters. Will be taking more caution on powder weight, case size and bullet size and BC. Been reloading since the 70's and still learning...
  12. GTNMUDY

    308 win reloading questions

    Rice bags. I got some 335 on the shelf. might load up some. Any suggested starting loads? Hodgdon web site say's 39.0 to 42.0
  13. GTNMUDY

    308 win reloading questions

    According the the Alliant website the max charge is 48.5 and Hornady manual states 50gr is MAX for 168 gr bullets. Alliant data states 52gr of powder for a 150 gr bullet is MAX. I did not see and issues with primers or cases damage on any of the loads. Maybe some out there has some info for me. Thanks for the response's.
  14. GTNMUDY

    308 win reloading questions

    OK, long range and reloaders. Just got back from the range after loading up some 150's and 168's. AR10, 308, 18" stainless barrel, 1:10 twist. 200yds range Hornady 168, Match, 47gr, 2000-MR, Avg 2458 fps, Hornady 168 Match, 48gr, 2000-MR, Avg 2680 fps Hornady 168 Match, 49gs 2000-MR, Avg 2714 fps *BEST GROUPS* Hornady 168 A-Max, 47gr 2000-MR, Avg 2522 fps Hornady 168 A-Max, 48gr 2000-MR, Avg 2657 fps *BEST GROUPS* Hornady 168 A-Max, 49gr 2000-MR, Avg 2703 fps Nosler 150 Ballistic tip, BT, 50gr 2000-MR, Avg 2803 fps *BEST GROUPS* Nosler 150 Ballistic tip BT, 50.5 gr, 2000-MR, Avg 2824 fps May problem today I think was high blood pressure because every time my heart beat I would move off bullseye. My groups were not what I expected from the 168 gr bullet that everyone says is the weight to use. My question is just how fast can I push the 168gr before accuracy degrades? This 2000-MR ball powder is much better than the H4895 I was using last week. The groups are much better with the 2000-MR. Is there a website that has reloading data for the Hornady bullets (I have been on there website), or some place else to look for data?
  15. GTNMUDY

    308 win reloading questions

    Sounds good, but I think I found my issue. Loaded up some loads last night using 2000-MR powder. 168 gr, 47 gs of powder, avg FPS = 2522 150 gr, 50 gr of powder, avg FPS = 2580 The groups on the 168 tightened up a lot better at 200. The biggest suprise was the 150 gr nosler's. the grouping was excellent. 1 MOA at 200 yds. Best grouping ever with this gun, bullet and powder. It made me feel good that it was not the gun. Going to work on the 168 loads to get 1 MOA at 200. I think I'm on the right track now. Wish i could post a pic.
  16. GTNMUDY

    308 win reloading questions

    My overall length in 2.8" No crimp Brass prep, I try to use the same head stamp cases (Federal mostly). Full length resize, trim case to 2.015" (when necessary) Factory 150 (federal) shoots worse than the reloads Barrel is stamped PSA ( Palmetto state armory) You bring u a subject that I have been trying to measure, the bullet lead or jump. I can easily figure it out on a bolt action but with the CBG it's a little more difficult. I tried seating bullet out further than normal (2.9") and used a black marker to blacken the tip.. Dropped it into the chamber then closed the BCG. Upon removal I didnt see a ring around the bullet to tell me that it hit the rifling. Is there a better way? Another thought I had was to just load 3 rounds at 2.8 then the next 3 rounds seat 2.81, 2.82 and so forth and see if accuracy improves. The only issue would be the mag not liking the longer bullets.
  17. Well, I read up on the .223 wylde before ordering a pistol upper for my new build. From what I have read it is the best of both worlds. On my trip to the rang with the pistol, everything seemed to go good until the 3 rd round did not fire and if could not eject it. After banging on the charging handle the round came out. did not see anything wrong with it, rechambered it and it fired and ejected. Then again on my second mag same issue different order of fire (somewhere around 10 rounds). Ok, these are reloads using .223 RCB dies. I always full case resize and keep the OCL at 1.74 and overall bullet length 2.2. I have a older Colt H bar, 5.56 and never really had issues with my reloads. When I looked at mt spent brass i noticed bright marks on the cases on all spent brass and in the same locations on the brass. (if I knew how to upload .JPG I would). I also noted small brass shavings inside the chamber and locking bolt areas and head of bolt. Tonight I cycled some loaded ammo through the upper and the marks were present (without firing the bullet). Now I have a question, I think the ramp on the stainless chamber needs polishing to feed without cutting into the brass as it is inserted and ejected from the chamber. If this will help, is there a tool to do this or is it just elbow grease time with 600-1200 grit wet sand paper. This is my first stainless barrel and never had scratching issues. Looking for some advise.
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