205 Berger elite N565

Gord0

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I'm starting load workup for my win mag that I detailed in another thread on here. Currently waiting on backordered 215 Bergers, but going to use what I've got and have some fun doing it.
VihtaVuori load data calls for Lapua brass, 205eh, 3.34" oal, max of 74.7 n565.
I'm running Rhian's reamer print so I gain a decent amount of case capacity. According to Berger the 205eh is about .110" shorter than the 215, but the base to ogive is within .01". Running an oal of 3.655" puts me .005" off the lands.

My load for a pressure test. (This is way above max, please use safe loading procedures).
ADG brass (fire formed), 215 primer, Berger 205eh at 3.655"oal, n565 73.5 - 78gr in .5gr increments. Hopefully I will have some numbers this weekend. Any guesses as to velocity out of my 28"?

 

tumbleweed

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I'd say 3100-3150 is pretty realistic. You may do better than that


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Ecroofsalot

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I’m shooting 215’s in my 300wm with 74.2 gr of N565 3.69 OAL 2850 FPS. I’m right around max load as well. Maybe you can seat them longer and not hit pressure as fast?
 

Gord0

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I’m shooting 215’s in my 300wm with 74.2 gr of N565 3.69 OAL 2850 FPS. I’m right around max load as well. Maybe you can seat them longer and not hit pressure as fast?
Loading them longer does reduce pressure. Until you end up in the lands.
 

rfurman24

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My 300 PRC would only make it to the upper 2900s before pressure and accuracy was around 2920 with a 26". The 205 actually has a rather long bearing surface for a 200 ish grain bullet. I would seriously doubt you could make 3050 without smoking primer pockets in a couple reloads with N565 or H1000. If you made me guess I would say you will be around 2975 in the accuracy node with a 28".
 

Gord0

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Thanks for the info! I saw it's got an additional .03" of bearing surface as compared to the 215, and about .03" less boat tail. I'm not chasing bleeding edge velocity. Accuracy and brass life are priority. I haven't seen this combination of components yet so I figured I would get it out there so others have hopefully a little less work to do. Hoping to make it to the range on Saturday
 

tumbleweed

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My 300 PRC would only make it to the upper 2900s before pressure and accuracy was around 2920 with a 26". The 205 actually has a rather long bearing surface for a 200 ish grain bullet. I would seriously doubt you could make 3050 without smoking primer pockets in a couple reloads with N565 or H1000. If you made me guess I would say you will be around 2975 in the accuracy node with a 28".

FWIW, we're getting 3045fps using the 205 out of my son's 26" hells canyon. That's with Ramshot Magnum and Gunwerks brass. No pressure signs and easy extraction. That's why I guessed that with 2" more barrel, a longer throat and probably a higher energy powder he very well could do better


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PAXMAN

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Ram Shot Magnum is right in there with RL26. It’s a different animal (double based powder). I haven’t seen a double based speed demon powder that’s temp stable. Seems like you need to pick one or the other.
 

Gord0

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Ram Shot Magnum is right in there with RL26. It’s a different animal (double based powder). I haven’t seen a double based speed demon powder that’s temp stable. Seems like you need to pick one or the other.
For me, temp stability is king over a little extra speed. 40deg temp swings are not unheard of where I live.
 

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While RL-16 and RL-23 are not speed kings, they are double base and reputed to be among the most stable with respect to temperature change.
 

tumbleweed

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Ram Shot Magnum is right in there with RL26. It’s a different animal (double based powder). I haven’t seen a double based speed demon powder that’s temp stable. Seems like you need to pick one or the other.

As of yet, we haven't seen any temp stability issues. We don't have wide temp swings here on the coast though. Load was worked up in mid '60's and was used in 85 degree weather for a 1020 yard buck kill that was done in 2 shots. Can't complain for our uses


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Goosedog02

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We've had excellent results with Ramshot Magnum, but shooting 200 AB's. Fantastic accuracy out to 900 yards and haven't ran into any pressure issues. We shoot in the summer when it's almost 100 degrees and then take the same load hunting in the mountains in below freezing temps. Trickles fantastic out of my Charge Master. We're pushing that 200 AB at 3151 out of a 26". That 215 is very interesting with the short bearing surface, but this load is shooting great and won't change until we re-barrel.
 

PAXMAN

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While RL-16 and RL-23 are not speed kings, they are double base and reputed to be among the most stable with respect to temperature change.
I was unaware that RL16 and 23 are double based. But I use them both in a few different rifles. You are correct in there temp stability. Amazingly stable.
 

Gord0

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I was unaware that RL16 and 23 are double based. But I use them both in a few different rifles. You are correct in there temp stability. Amazingly stable.
Reloder 16 is a great powder. My Creed loves it too. All of the VihtaVuori 500 series powders are double base. N565 and 570 are temp stable also. Not sure about the rest in the lineup. I really want to get my hands on a keg of n568
 

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N565 and N570 are great powders. There is some temp issues with other lines (560) that I have shot.
 

Gord0

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Finally got a chance to shoot these today. Never ran into pressure throughout the test, but I'm thinking I would probably hit it around 79gr. Saw 3082fps at 78gr. Looks like there might be a good stable node in there. 75-76.5gr was 2971-3003fps. Might have another one up around 3100 if this barrel speeds up. I've only got 37 rounds down it.
 

tumbleweed

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Finally got a chance to shoot these today. Never ran into pressure throughout the test, but I'm thinking I would probably hit it around 79gr. Saw 3082fps at 78gr. Looks like there might be a good stable node in there. 75-76.5gr was 2971-3003fps. Might have another one up around 3100 if this barrel speeds up. I've only got 37 rounds down it.

That's awesome. It's not a matter of if the barrel speeds up, but how much. My sons sped up 100fps which really surprised me. Typically I'd expect at least 50fps


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rfurman24

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Barrels speed up due to throats getting rough. The physical speed up happens because of increased pressure. If you are hitting pressure at x velocity now when the speed up happens you will still be at near the same pressure at x velocity. Any thing over that will be even more pressure. Barrels speeding up do not give you more usable velocity. It gives you more pressure. The more important part of this is a node is where the node is. Barrels speeding up make you drop charges to get to the same node.


Those are pretty good speeds and far different than what I have seen from that bullet. I look forward to seeing where you end up.
 

Gord0

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Barrels speed up due to throats getting rough. The physical speed up happens because of increased pressure. If you are hitting pressure at x velocity now when the speed up happens you will still be at near the same pressure at x velocity. Any thing over that will be even more pressure. Barrels speeding up do not give you more usable velocity. It gives you more pressure. The more important part of this is a node is where the node is. Barrels speeding up make you drop charges to get to the same node.


Those are pretty good speeds and far different than what I have seen from that bullet. I look forward to seeing where you end up.
Your original estimation was probably pretty close. I'm guessing I'll be somewhere around 2975-3000 after it's all said and done. I was shooting off a crap bipod and 75-77 all ended up in 1/2". I need a better bipod, and a stock for this thing.

 

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