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ontoproofer

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Posts posted by ontoproofer

  1. Hi varmlr

    when I first got the rifle about 5 years ago I took it up the road to the tunnel range to set it up and had a box of both 60gr and 62gr bullets and it was spitting them all over a4 piece of paper but as soon as I put 69gr in it tightened right up and with 75gr was cloverleaf which was happy days until I realised how expensive they are lol. The distance usually is 300 or 600 yards and only shot out to 1000 yards with it because my mate was trying the same with his 223 😁. I have thought about reloading for some time now and with not working at the minute have ordered a load of reloading gear 😀 and was amazed at all the different powders available !

  2. 28 minutes ago, miki said:

    Excellent. The twist rate nominally effects the stability relative to length. Obviously the heavier the bullet is for a given cross section/diameter the longer it is. 1:12 has problems with the longer but I don't think the faster twist should effect a shorter, in the same way (more reading req  🤔)

    There is a point where the higher weight and BC will give more distance but I don't think the bullet is still supersonic over more than 600 so surely must be tumbling at that range ?

    REF: accurateshooter linky

     

    At 600 yards its still over 1800 fps 😀

    At 900 yards its okay at about 1320 fps and the scope maxed out

    At 1000 yards its crawling along at 1163 fps

    Ive had lots of people say its too heavy for a 1 - 9 twist and it should be 1 - 8 twist but it seems to work okay with 75 gr and not quite so good with 69 gr sierra's

  3. 52 minutes ago, miki said:

    @ontoproofer excellent of the book. The advice @Deker gives is good tpp (and based on real experience, wheras I don't have a rifle chambered in .223) RL52 (Reload Swiss) is a good modern powder. the nearest equivalent in Vhit is N540 *

    A 75gr bullet is a heavy lump for a .223 size case isn't it ? Why that big ? A 55/60-gr would give you more speed and a flatter trajectory (and a bit less recoil too i'd imagine).  A 55 should get around  or above 3300fps where the 75 is crawling along (haha) @2800(ish) you should get a wider choice of powders for the lighter/smaller bullet too.

    Have you tried any other bullets ?

    *REF: Burn rate link

     

    Hi Miki

    yes big lump for a 223 but I get v bulls at 600 yards and have even hit a gong at 1000 yards lol.

    The rifle doesn't stabilise 60 gr bullets or less I think that's more for a rifle with a 1 -12 twist

    Ive been looking on the viht site today and it recommends the n540 for those bullet weights so hopefully happy days ! 

  4. 1 hour ago, Deker said:

    I can't help with a load for the 75gr Hornady but I use 77gr SMK in mine and found N140 wouldn't get decent speeds with the heavier bullets as the powder was compressed with 22.4gr in the case so I couldn't get up to the next node (just over 2400 fps but great groups), I've used both RS40 & RS52 with much better results (22.8gr giving 2830 fps and still not compressed), there's probably a Vhit equivalent but I'm not sure what it is and I can get my hands on RS powders easier.

    The numbers above aren't any use for the load that you're developing for BUT you can see the capacity\speed difference between powders, Reload Swiss has a good website with their load guide.

    https://www.reload-swiss.com/en/reload_swiss/service_2/index.php

     

     

    Hi Deker thanks for the input when you look at the reloading manual its maximum load of powder which I don't want to be near is only giving it between 2600 - 2700 fps but when you buy the bullets which Hornady make there flying along at 2930 fps. The rs website doesn't support that Hornady bullet !

    Cheers ontoproofer

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