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  1. MarkyMark007

    Bushing or mandrel or both?

    I can see you can undersize quite a lot with decaping-expander-mandrel insert, and you buy them in 0.0005' increment for target tension.
  2. MarkyMark007

    Bushing or mandrel or both?

    all dies do the same thing as mandrell does, but they does it in the UP stroke with ball or with long mandrell - SAC die. now we must see, if it is better to do this in DOWN stroke in another step, or it can be also done with SAC mandrell inside the die with UP stroke; what can be the biggest...
  3. MarkyMark007

    Bushing or mandrel or both?

    thank you very much! so SAC did think of this. very very good. can you tell, how much you can undersize neck or how much are dimensions on those two places of the mandrell?
  4. MarkyMark007

    Bushing or mandrel or both?

    Why did SAC make mandrell the same dimension in whole dimension? This way you cant undersize neck with bushing and expand it with this mandrell in stoke ''up''.
  5. MarkyMark007

    SD's in .223 /5.56

    cratered primers and flattened are two different things. cratered primer is from large hole around firing pin - those are non-custom bolt heads. you ~wont see cratered primer from good custom bolt head. flattened primers are from higher pressure or thin primer cup. and after that there are...
  6. MarkyMark007

    Varget vs N140

    not EXACTLY. or yes EXACTLY. I am saying that Laurie Holland is getting those velocities:https://www.targetshooter.co.uk/?p=3856 with 223REM and 77gr bullet. you MUST understand AND REMEMBER, that powder burn rate or velocity is VERY CARTRIDGE and maybe BULLET dependent. you cant say if you...
  7. MarkyMark007

    Beam scale… am I out of my mind?

    the best new balance reloading scale is RCBS M500.
  8. MarkyMark007

    Varget vs N140

    https://www.wlcastleman.com/equip/shoot/t223/index.htm
  9. MarkyMark007

    Varget vs N140

    only N555 ~ H4350 ~ ReloadSwiss62. not N550 N550 is slightly faster than RS60 = Re17, and ReloadSwiss60 = Re17 is ~ S-065 = Shooters World ‘Long Rifle’ ~ Re16. N160 is slower than N555 for at least 1gr. N140 will probably be a little faster than Varger. N150 can be like Varget. and so is...
  10. MarkyMark007

    ES inverse of accuracy

    because you have hunting rifle, with hunting cartridge, with hunting bullet, with hunting powder, with small sample size, with bad precision. that's why your data are not worth much.
  11. MarkyMark007

    Hornady on Load Development

    you have inferior cartridge designs and excelent ones. those who are excelent are the most popular in precision disciplines and are ''inherently'' better, and others are good only for PRS and hunting... there is THE REASON why some cartridges dominate in BR, long range etc...
  12. MarkyMark007

    SD's in .223 /5.56

    in 223 you should try all useless things in other cartridges like sizing with mandrell, lubricating bullets and inside neck. i'm right now at lubricating bullets and inside necks, and I think it is better...
  13. MarkyMark007

    Post Your AMP Press Plots

    it's normal. in firearms, when you lube something or polish things, this will generate less friction and consequently less pressure and therefor less speed. it's just the opposite what people thinks.
  14. MarkyMark007

    VVN 550 & 555

    ''possible powder'' and ''best suitable powder'' are 2 different things. and i talked about that. if you have N550 and N555 for 140gr CreedMoor available, everybody would choose N555.
  15. MarkyMark007

    SD's in .223 /5.56

    you can get single SD digits, but it is sometimes frustrating and harder to get than in all other popular cartridges. my goal is get less than 1 MOA water line at 1000m for 20 shots WITHOUTH flyers. I am maybe close, but not there jet. my Shotmarker keeps telling me, that 95% of higher and...
  16. MarkyMark007

    VVN 550 & 555

    N550 and N555 are quite far apart at burning rate. i would not use N550 in CreedMoor.
  17. MarkyMark007

    Hornady on Load Development

    ledzep; why do you allways stick to your inferior cartridges designs like 6 ARC and 6.5 CreedMoor for the most precise testings? there are better cartridges and better bullets to get better velocity spread and better precision on target... ;(
  18. MarkyMark007

    Hornady on Load Development

    ehehehehhehehe, ledzep stir the pot again !! he just cant help himself :DDDDD did you get AMP press jet?
  19. MarkyMark007

    Secret Life of Brass: Part 2

    Hi Bryan. Yesterday I observerd funny thing with seating force when I was seating bullets. I got smooth seating pressure when I was lubing inside the case necks, and I also got smooth seating pressure when I didn't applied lube to inside necks but when I only brushed case neck with dry brush or...
  20. MarkyMark007

    Sorting primer velocity with the Garmin Xero

    thx for the test. like all testers see; primer weight IS corelated to velocity. no doubt. it's just cartridge choice, if this is more or less visible. with your choice of bad little cartridge: 22Nosler; and Staball powder (and maybe AR rifle), every variable is bigger than in bigger and more...
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