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.308 110Gr Seirra Loads

Discussion in 'Reloading' started by tyger006, Mar 26, 2010.

  1. tyger006

    tyger006

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    Hey all,

    Just going to work up some light varmint loads for my .308 Savage 99 lever.

    Plan on using 110gr Sierra HP Varmint bullets.

    I would like to work up a load using TAC, but can't find data for it. Anyone played around with 110gr and TAC in .308? I am stocking lots of this as my go-to .223/556 powder now, and have had very good results with TAC in 150gr .308 loads. I would rather not have to use yet another powder, and would rather consolidate to just TAC for my .223/.308 needs.

    There is data on 125gr Nosler BT for TAC, so I suppose I could start there if I can't find much else. Looking for accuracy first and velocity second on this load, so I am not concerned with reaching the very max speed possible.

    If not TAC, I will probably use the leftover H335 or H380 (my .22-250 powder) that I have on hand, as 110gr data is available for them. Problem is, I would rather phase these out than develop another load requiring that I keep them on hand.

    Thoughts?

    Thanks!

    Tyger
     
  2. jaybirdjtt

    jaybirdjtt

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    No luck with TAC. You might consider 748 which I really like for the 223. Good accuracy and meters well. In the 308, 110 grn Sierra bullets, 50 grns to maybe 53.5 as a max for 748.

    H335 with 110 grn......48 grns to 53.7 max. All these loads were considered MAX loads and produced from 3200 to 3300 fps so you might want to start lower.

    H380......heavier weight bullets is all I come up with for that powder.

    I've used many Speer 100 grn Plinkers in 30 cal for maybe the type of shooting you are describing. 10 grns of Unique will produce 1600 fps in a 308. I used that bullet in a 30/06 for jackrabbits, cans, etc., out to about 150 yards to practice for larger game. Cheap bullet/load to shoot.
     

  3. ctaggart

    ctaggart

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    Is the standard rate of twist going to stabilize a 110gr bullet?
     
  4. Jumper

    Jumper

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    Call sierra's tech line for a TAC load for their 110's.
     
  5. tyger006

    tyger006

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    Thanks for the reply.

    My Lyman 47th manual shows H380 with a max load, compressed charge of 55.5gr moving at 3268ft/s from a 26" bbl, pressures at nearly 51k. Perhaps not the most ideal, but it is something I had on hand, so it gets considered.

    The same manual maxed out H335 at 49.0gr, so a little more conservative than the max charge you posted above.

    Main goal with this bullet choice is a lower recoil, accurate hunting load for coyotes.
     
  6. tyger006

    tyger006

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    Heh, not even sure what the twist rate is on the old Savage 99... but I hope so. If not I may have to move up to 125gr lineup.

    That's a great idea, thanks!
     
  7. tyger006

    tyger006

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    OK, got off the phone with Rich from the Seirra hotline. What a great guy to chat with! He suggested that I start in the 46-47gr range and work up to a max of 50.5gr of TAC and see how it performs. So I now have my homework for the weekend, and I will let you all know where it goes from there. Thanks Jumper for the suggestion, I had not thought to call them.

    Tyger
     
  8. tyger006

    tyger006

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    Well, I worked up my load last weekend, but haven't gotten around to posting anything for it until now.

    Initial results are OK, but not stunning. I was in a hurry to test these before the sun went down and I ran out of light, so my shooting was rather rushed. I am not a great group shooter in general, so I was happy with the results.

    For all these loads I was using IMI once-fired, trimmed and Full length sized brass at 2.260" OAL.

    Rich from Sierra told me to start at 48 grains of TAC and then told me I would be smarter to start at 46 and work up. Seeing as I had no data to compare with for this bullet, that's what I did. First group was not the greatest but at least the old Savage is stablizing the light bullet out to 100yds:

    http://picasaweb.google.com/tyleray/308110GrainSierraVarminterLoads#5455393301497739842

    47 grains was as bad or worse...

    http://picasaweb.google.com/tyleray/308110GrainSierraVarminterLoads#5455393305006486690


    At 48.0 the load started to respond. I also noticed a large jump in recoil, not that it's too bad with the lighter bullet, but in such a light rifle it is still noticeable. Got three of the 5 to nearly touch, so that was an improvement over the other loads.

    http://picasaweb.google.com/tyleray/308110GrainSierraVarminterLoads#5455393313206293186

    Last load of the day, 48.5 grains. Had three pile up on each other in this group, and considering I was thankful to not be shooting in the dark, I was happy enough with the results:

    http://picasaweb.google.com/tyleray/308110GrainSierraVarminterLoads#5455394874132609778

    Happy with the first round of loads. No pressure signs as of yet. I will continue on up for now in .2 grain increments looking for anything that groups extra nicely. I need more trigger time with the old gun as sometimes it felt like I knew when she would fire and others it felt like the pull was forever long and a tad spongy... Like I said before, I am not the best group shooter! But it looks like I am getting decent enough accuracy that I can use this gun to hunt Coyotes with even if I don't get much better groups. Really though for a lightweight lever gun that I shot fairly fast, the groups stayed together pretty well.

    Comments?

    Tyger
     
    Last edited: Apr 2, 2010