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Hobbit

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Everything posted by Hobbit

  1. Hi I just wanted peoples thoughts on the impact of case fill percentage - particularly low 90's in percentages I am experimenting with two new calibers (for me) 300 win mag and 7x64 I tend to stick to the RS and Vhit powders given they have a range to do a job and can be got hold off I am using high BC/heavy for caliber bullets (225gr ELD-M and 162.175gr ELD-X respectively and have found some good, sub Pmax loads that give me good ES/SD, velocity flat spots and accuracy with typical 20 thou jump. However - the urge to tinker is always there and a youtube video has made me aware of the 123 button on quick load so now I am aware of other possibilities including other RS and Vhit powders Questions 1, Does a low fill percentage (90-97%) give you uneven burn and higher SD/ES's? or any other issues? 2, If you go the other way - how far over 100% can you typically go with a sensible crush - I have heard up to 105% typically depending on powder and die (redding competition micrometer dies not being guaranteed with any crushed loads) Thanks
  2. Hobbit

    Implications of case fill percentage

    I think Laurie voiced his skepticism of the suggestion that the short fat cartridges were more accurate/consistent than the longer ones - 284 vs 280 on another blog thought i’d Get an empirical draw vote on the fill percentage
  3. Hobbit

    Implications of case fill percentage

    Fair enough - So it’s not proven or even generally accepted? I personally just do a load ladder and look for the low SD and velocity flat spot with an easily available powder that suits the caliber but then I found that 123 button in quick load and wondered if it was a better way to choose a powder and if so should I care about fill%age as well as P and V??
  4. Hobbit

    .357 lead

    I use ramshot zip - around 6.5 gr under a 158 grain lead bullet - I really would get a load book and work up in 0.2 gr increments - so 6, 6.2, 6.4, 6.6. 6.8 and 7 for the 158 gr / zip combination I mention so you tune your load to the rifle I have also heard it suggested that mixing jacketed and lead bullets is bad for accuracy but have not seen it myself - I am not that accurate with my marlin
  5. Hobbit

    QD mount return to zero

    Hi, I am wondering about getting one piece mounts with Quick detach for my rifle scopes as a way of avoid safe damage and getting the full rifle capacity out of my safes is there any experience out there on how reliably they return to zero? I am talking quality, monolithic units such as spuhr, AD or the new Tier ones? Thanks
  6. Hobbit

    QD mount return to zero

    Got it Is that a tubb gun? Is there a POI shift between calibers? do you need to re-zero?
  7. Hobbit

    Borden Alpine .308

    Got it, thanks
  8. Hobbit

    Borden Alpine .308

    Great looking rifle - quick question - "I wanted a tight unbedded fit" what is the advantage of an unbedded action versus bedded? Thanks
  9. Hobbit

    QD mount return to zero

    Is your 6.5x47 / .338 Norma Mag two rifles that share the scope or a switch barrel job?
  10. Hobbit

    QD mount return to zero

    Catch as ever - really helpful - I'll have a look Cheers
  11. Hobbit

    Implications of case fill percentage

    Agree on accuracy point but I have seen long rage reloaders suggest that you manipulate load charge to find a low ES/SD node that is also stable with regard to small variations in charge (velocity/charge weight flat spot) and then vary distance to lands for accuracy Given that ES/SD is a direct contributor to accuracy (vertical spread) at long range by question would be does fill percentage have any effect?
  12. Hobbit

    Implications of case fill percentage

    Using RS62 for 7x64 given I had it for the creedmoor and it works well and N165 for the 300 WM - got a 30 inch barrel so can get mid level velocities
  13. Hobbit

    GGG brass - case quality and capacity

    Michal I accumulated quite a lot of GGG brass by shooting the NRA match ammo that GGG makes and is sold at Bisley - it is stout brass and, I have found with the 308, very uniform in weight although it does need primer pockets to be uniformed. I have just measured a bunch of necks - not so uniform - get between 13.5 and 15 though with a proper thickness micrometer - how did you measure the necks? Don't know case capacity but weight may indicate lower than usual (again 308) - I would do a load test and work up Not that helpful but thats what I have
  14. Hobbit

    Accuracy International

    True I now put a light smear of bore tech extreme grease or generic copper grease on the threads (of all my barrel/mods including AI) every time I change from mod to thread protector and back again seems to help
  15. Fair play - As a Marlin owner - that is a very good looking example and a great package at a great price
  16. Hobbit

    Custom dies - body die

    Does any body have any experience on getting custom dies made and sent to the UK? My current preferred reloading method is to use the body die (to bump 2 thou in a bolt, 4-5 though in a blaser or AR) and seater from a Redding competition type S die set and Lee collet neck die (I recently found that the latter gives me better run-out than the rather expensive redding comp bushing neck sizers that come in the set and apparently works the brass less) This is great for 308, 223, 6.5CM and 300 Win Mag but I can't get either the Redding or lee dies in 7x64 Brenneke Currently I FL size the 7x64 with a standard redding die and run in a sinclair mandrel at .282 for 2 thou neck tension - which is ok but not quite the run out tolerances of the lee die and the effort of withdrawing the expander suggests I am working my Lapua brass hard So I wondered if this was an opportunity to try out the custom dies route - I have ordered a lee collet die in 280/7mm express to experiment with but that still leaves bumping back the shoulder without over working the neck which I think my FL dies is doing. I recognise that I may be overthinking this and the marginal gains are questionable but learning new approaches and experimenting is one of the reasons I enjoy reloading so any insight and anecdotes appreciated
  17. Hobbit

    Custom dies - body die

    Catch Thanks - I'll look up those custom guys
  18. Hobbit

    Custom dies - body die

    Gandy yes please - I have searched Lee and they do a pacesetter set but I am really looking for a neck collet die given the results (runout) I have been getting - not sure what set yours is? thanks
  19. Hobbit

    Custom dies - body die

    Catch Very helpful whats the process here - send a fireformed case? whats the import story? , How did you find the results from the dies? Cheers Hobbit
  20. Hobbit

    Custom dies - body die

    Gandy - are you suggesting contacting Lee?
  21. Hobbit

    300 Win Mag Reloading

    I have just started reloading 300 win mag - I have a custom Bartlein 30' heavy barrel fitted to my AI AXMC The distance to lands is quite long deliberately to accommodate the newer high BC bullets I load a hornady ELD-M 225 gr to an dal of 3.73 which is still 30 thou off the lands I am using N165 to protect the barrel but 72.3gr gives me a sedate 2720 fps (note the extra length to lands increases available space in case and reduces pressure - as ever - you work up your own loads) but the BC deals with the wind as a side note I am using Peterson brass which I sorted but in truth was at least as uniform as my Lapua in other calibers - really good stuff, out of production at the moment but I added 200 pieces to my 100 last week from Dauntsey I have Redding competition sets but actually now use a lee collet die on the neck with threading body die because I get less run out than with the much more expensive competition bushing neck die from Redding I also noticed 10 thou of growth in the case on first firing and will headspace from neck from now on - by setting the should back by 3 thou or so - I am not an expert but this is my experience
  22. Hobbit

    300 Win Mag loading

    Hi I am about to work up a load for a new 300WM 30" bartlein that Mik put on my AI AXMC planning to use 225gr ELD-Ms and N165 (gets to where I need it with the 30" tube and not too savage on the barrel) I have Peterson brass that sorted very uniform indeed I was wondering about primers - should I use a magnum primer or not - will be aiming for a stiff if not actually hot load I have a redding competition die set but suspect I will actually use the lee collet die over the neck bushing die or at least do a comparison I understand that magnum primers are more about pressure resistance that any ignition effects - is this correct?? any suggestions on the primer front or any other aspect of this small project thank you
  23. Hobbit

    300 Win Mag loading

    Laurie Very helpful as ever - I'll look up some of the match primers you suggest Thanks
  24. Hobbit

    300 Win Mag loading

    Andrew Whilst I applaud you economy of words I would like to clarify your position ? for the avoidance of doubt your are suggesting, like Incisor, that non magnum primers are the way to go?? Duey I completely get it - if it works crack on with the shooting - my barrel was not cheap and it s a lot more finite that a 308 so agree hence my aim to get a solid steer and go with that I have seen a lot of love for the federal 215 magnum primers from the US Cheers
  25. Hobbit

    300 Win Mag loading

    Duey Thank you - does that mean magnum primers have 'more oomph' and help with ignition rather than just being harder and able to cope with higher pressures without flattening etc??
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