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Quarter Bore Resurgence

I still have 3 boxes of the 120gr Sierra HPBT GameKings. They are longer than the 115gr VLD, with a longer bearing surface.
Except for the low BC, they are plenty accurate out of my 257 Roberts out to 300 yards.
Haven't had the opportunity to shoot them further yet.
Sounds like you should be trying them at the 400 yd deer match, don't you think.
 
You have 20 min for each 10 shot string. Shoot 5, wait 15 min and shoot 5 more. Not so bad.
Need to form more cases. 7X57 to 257 Roberts, then fireform to AI.
I do have enough of the 115gr Berger VLD Hunting.
I haven't developed ANY loads for the AI yet.
I'm thinking a busy weekend for me.
 
Berger 135s are starting to show up @ some retailers who ordered them.


update: 7/9 -> all sold

these showed up the other day from McGee Stocks:

1626032978748.png
 
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Really wouldnt mind getting a custom throated 257 rob to try them 135 bullets but i feel like they would be better suited to something with extra hp to get velocity up where it would shine better

shot the 110 gr sierra gamechangers some more. 565 yards last weekend on 8” plates and it did very well for what it is. Then i maxed out the optic (54 moa max and Only 14 power) and with all the holdover was able to get it on 10” plate at 1375 yards. My guess was the reticle gives 14 moa. Calc says 64.3 moa to target so i needed 4 more. Well below subsonic at that point.


45.2 gr reloder 23 2950’s fps from a 20”. Never intended this gun to be a long range rig but to 550 Or so its pretty decent. Might take it on the powerline hunt this year

565
 
Berger 135s are starting to show up @ some retailers who ordered them.


update: 7/9 -> all sold

these showed up the other day from McGee Stocks:

View attachment 1266387
Haven't found one place in stock yet including McGee stocks. Matter of fact, there not even on McGee's website.
 
I did that months ago. Haven't heard anything as of yet. Also have my name on other waiting lists. No contact yet. Thanks. John
 
Really wouldnt mind getting a custom throated 257 rob to try them 135 bullets but i feel like they would be better suited to something with extra hp to get velocity up where it would shine better

shot the 110 gr sierra gamechangers some more. 565 yards last weekend on 8” plates and it did very well for what it is. Then i maxed out the optic (54 moa max and Only 14 power) and with all the holdover was able to get it on 10” plate at 1375 yards. My guess was the reticle gives 14 moa. Calc says 64.3 moa to target so i needed 4 more. Well below subsonic at that point.


45.2 gr reloder 23 2950’s fps from a 20”. Never intended this gun to be a long range rig but to 550 Or so its pretty decent. Might take it on the powerline hunt this year

565
I need to find some of the 110 Sierra's!!
 
I got mine thru midway. Bought one box to try and liked them so i got on the email list to notify when they got more in stock and bought another box right away. Havent looked in a while now
 

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