Search results

Search the forum Search Articles
  1. S

    Help from the 175 SMK/I4064 Loaders

    I have found none of it loaded with 41.7 .... again.. that is ONE govt build sheet .. that may be a typo or more probably it was a hot batch of 4064 that was not canister grade.... when federal/lake city goes to work up a new lot. they don't load to a set powder weight spec.. they load for a...
  2. S

    Help from the 175 SMK/I4064 Loaders

    another thing I will add is that depending on use (single shot hunting vs string fire ) if you need a load that will always place the cold bore in the exact same spot without heating up the barrel (hunting) vs a somewhat in the same spot cold bore but the groups don't open up as the barrel...
  3. S

    Help from the 175 SMK/I4064 Loaders

    Here is a great article that does a pretty nice job of explaining optimal barrel time OBT .. optimal charge weight OCW is a concept that is very hard to put on paper as its 'internal ballistics' and how powders perform with pressure, heat, volume, etc that even Aberdeen proving grounds and the...
  4. S

    Help from the 175 SMK/I4064 Loaders

    now that we have some of the magneto speed variable explained lets get to the OPS question .. about an actual 4064 load... loading for 308 is by some peoples accounts. .. very easy.. its a forgiving caliber with inherent accuracy.. however since 308 is ubiquitous there are millions of...
  5. S

    Help from the 175 SMK/I4064 Loaders

    I disagree and agree... let me explain I have a couple threads here on the hide, or possibly weighed in on existing threads about magnetospeed... while there are reports of people using this device that see no change in POI shift or group size that is not statistically the norm.. group size...
  6. S

    6.5 PRC in Remington 700 Long Action?

    sorry... late to the party and I understand that the op went in another direction.. but just for future reference and to add to the thread about 6.5 PRC vs 6.5-284 conversion I will add my experience .. experiment I took possession of a "assumed" shot out 6.5-284 hunting rifle that a guy was...
  7. S

    New Magnetospeed Mounting option

    after contacting the author of the research paper.. most of the testing was done over a completely parallel / level surface but some smaller samples and computer modeling definitely suggest that the angle of incidence of the aerodynamic body (bullet) shockwave contacting the interferncace...
  8. S

    Gunsmithing button rifle barrel mystery.. anyone want to weigh in

    @__JR__ don't think that this is an RDF issue 'completely' since the mfg did index loads using a different bullet and it shot crazy for them too.. dimensionality and melanite may be playing a part but at this point I am willing to be that it either wasn't heat treated right or the steel is...
  9. S

    Gunsmithing button rifle barrel mystery.. anyone want to weigh in

    still testing.. but no, given the gauging and measurements and testing done to date, nothing tells them the barrel should not be a shooter. the index loads evidently not my load, he didn't tell me exactly what it was other than it was not what I was using.. and not unusual since R26 and RDF are...
  10. S

    Gunsmithing button rifle barrel mystery.. anyone want to weigh in

    will do.. likely not for 6 weeks at least.. ugh.....
  11. S

    Gunsmithing button rifle barrel mystery.. anyone want to weigh in

    well the mfg shot some index loads through the barrel in a known action and fixture, and it shot like shit for them as well... oddly, the first 3-5 rounds from the cold/clean barrel grouped at .5" then opened dramatically over the next rounds.. he offered his personal apology as given the...
  12. S

    Magpul AICS 10 round mags??

    If I got to the point where I needed or thought I needed 100 rounds in a gunfight, I would quickly figure out I was on the wrong weapon system and grab my carbine.. or M110, or disengage with my bolt gun and DD by round 100 you are throwing as much rifling at them as bullet.. hehe @CavScout85...
  13. S

    Magpul AICS 10 round mags??

    @wigwamitus leaving out why you would need 120 LOADED in to mags with the exception of being in Fallujah during the push... how the hell do you carry 12 mags on your person... hehe
  14. S

    Magpul AICS 10 round mags??

    the is until @wigwamitus calls and orders 100 for his vegas op... hehe kidding..
  15. S

    Gunsmithing button rifle barrel mystery.. anyone want to weigh in

    the RDF were 100+ fps slower in the old barrel than some 140AMAX bullets that I got with the purchase of the rifle.. loaded them with the same load of r-17 so even in the tighter bore they shot noticeably slower..
  16. S

    Gunsmithing button rifle barrel mystery.. anyone want to weigh in

    I am betting that those that are having issues with the 140 RDF might be stemming from the .2638 diameter vs .264 to .2642 diameters of hornadys and berger.. my hunting weight barrel that shot it well was noticeably tighter with a bronze brush than the current 4 tens over of the current...
  17. S

    Gunsmithing button rifle barrel mystery.. anyone want to weigh in

    I will say.. in full disclosure that I absolutely agree with you on the RDF in 308.. I bought 2K and they are terrible.. in one lot.. there are a mix of bullets that have misshaped ogives.. if you check the base to 308 ogive they look about right.. but if you take gradually smaller caliber...
  18. S

    Gunsmithing button rifle barrel mystery.. anyone want to weigh in

    same barrel mfg, my old barrel from the same company, just in a much lighter profile, same twist (supposedly) just tighter bore.. shoots these into .25" bugholes... satterlee uses RDF bullets as well with R26 in his accuracy addiction 6.5 with equally impressive results... slapped the old...
  19. S

    Gunsmithing button rifle barrel mystery.. anyone want to weigh in

    well if I can go from 2880 all the way up to 3150 and not find a node where 2 bullets get within a 1/2 inch I would say the barrel is a non-starter
  20. S

    Gunsmithing button rifle barrel mystery.. anyone want to weigh in

    I don't have a mic that is accurate below a thou.. but over on another board a guy mic'd a couple berger, hornady and the RDF.. the RDF was the only bullet below .264.. at .2638.. so the bore is over by 4 tens and the bullet under by 2 tens.. so stacked that is 6 tens which is actually over a...
Top Bottom
Back
Home
Forums
Merch
Alerts