Successful loads for the 98B

Medium Caliber, Bolt Action Precision Rifle

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adamk
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Successful loads for the 98B

Postby adamk » Tue 19 Feb, 2013 9:33 pm

I have a 98B with a 27" barrel, Nightforce glass. I loaded up several different loads, and had success with all of them. This rifle does not seem to be too picky, which seems to run in contradiction to what I have read, at 100 yard zero anyway. Lapua brass, federal 215Magnum
90g of Retumbo, 300 grain SMK and Lapua Scenar: .5"
90g of H1000, 300 grain SMK and Lapua:.5"
but the real winner was 92.5g H1000 w/hornady 285g: .4" (this load was a load that was researched, it is over max so beware)
The 90g loads run around 2720fps on the 34 degree day. The 92.5g load was running around 2775fps. I had slight primer flattening on all loads, but I feel it might not be the best pressure indicator with this round or chamber, I've seen alot worse with my AR10.
I also seated the bullet close to max mag lenth, It seems the lands on this rifle are very close to mag length. I set them at 15thousandths off.
I loaded up more the above and plan to move out further. Very nice and comfortable rifle to shoot. I will also try 92g of Retumbo w/285g Hornady, researched.
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Re: Successful loads for the 98B

Postby shotgun » Wed 20 Feb, 2013 3:04 pm

Awesome work! I wish I could get my savage110ba to shoot that well. I am using nearly the same combos as you are. Have you tried any Berger 300gr hybrids? if so how did they perform for you? Thanks and congrats on you rifle and your load work up :cheer:
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adamk
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Re: Successful loads for the 98B

Postby adamk » Wed 20 Feb, 2013 6:43 pm

Sorry, I have not tried any Bergers. I have had relatively good luck finding the three I have tried, so no plans as of yet to expand barring terrible down range performance of the three. Good luck!
CliveG
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Re: Successful loads for the 98B

Postby CliveG » Fri 09 May, 2014 6:02 pm

I use Berger 250 grain Tactical with 88 grains of N560
adamk
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Re: Successful loads for the 98B

Postby adamk » Fri 31 Oct, 2014 1:41 pm

Hi, I have tried the 300g Berger hybrids, they shot reasonably well with 90g of H1000, but I found that they are too long (for mag length) to seat them within 15 thou. off the lands for best results. Lapua 300g Scenar has been the best, with many .5" groups at 200 yards, and the 300smk a very close second.
3.755 OAL for the Lapua 300g.

285g Hornadys were 1.25" at 200 with 90g of h1000.

480 yards and 800 yard shooting is coming up, the crops are coming out of the fields around here, so that should be interesting as well.
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Re: Successful loads for the 98B/Max Pressure???

Postby darrell*** » Fri 21 Jul, 2017 11:25 am

adamk wrote:I have a 98B with a 27" barrel, Nightforce glass. I loaded up several different loads, and had success with all of them. This rifle does not seem to be too picky, which seems to run in contradiction to what I have read, at 100 yard zero anyway. Lapua brass, federal 215Magnum
90g of Retumbo, 300 grain SMK and Lapua Scenar: .5"
90g of H1000, 300 grain SMK and Lapua:.5"
but the real winner was 92.5g H1000 w/hornady 285g: .4" (this load was a load that was researched, it is over max so beware)
The 90g loads run around 2720fps on the 34 degree day. The 92.5g load was running around 2775fps. I had slight primer flattening on all loads, but I feel it might not be the best pressure indicator with this round or chamber, I've seen alot worse with my AR10.
I also seated the bullet close to max mag lenth, It seems the lands on this rifle are very close to mag length. I set them at 15thousandths off.
I loaded up more the above and plan to move out further. Very nice and comfortable rifle to shoot. I will also try 92g of Retumbo w/285g Hornady, researched.


In regards to your comment "but the real winner was 92.5g H1000 w/hornady 285g: .4" (this load was a load that was researched, it is over max so beware)" ......is there a quick way to find out the maximum pressure for the 98B 338 Lapua with the 27" barrel WITHOUT spending hours on google chasing articles? I have been using 93 & 94 grains of retumbo to throw the 300 grain round down range 1000+ yards however now you have me worried that I am living on borrowed time. I tried 95 grain rounds and it got sticky extracting so I thought that 94 was my max. Speed is your friend for distance shooting!!! I recently heard that the H1000 is far superior than the retumbo so I am anxious to start my loads at 91 with the 300 grain berger.

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