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Long overdue but did a little more testing with the 16" ARP. I've never shot ladders at 100 with my bolt guns but gave it a shot after several here swear by them. 110 bthp AA2200new SSA brass(old stock)cci 412.260pretty obvious 5-7. Velocity topped out at 2600. Note that poi dropped going up in charge weight for a few shots. No I didn't shoot that bad. I've seen this before where the bullet exits at a lowe point in the barrel harmonics. This ladder not so much. It's obvious Benchmark is plenty accurate you just cant get enough in the case to get top velocity. Velocity topped out at 2584. It was also a very compressed load. A drop tube would help but not sure there's much there to get as velocity was topped out on the last 3 charge weights. 100 Accubond BenchmarkSsa brass2.290cci 41Having already done some testing with 2200 and the Accubond. 28,28.5,29 grnote that the outlying shots from each load are the 3 rd shots. This combo really wants to throw that 3rd shot. The first 2 from each are touching. Still not bad at 1/2 inch. Going to test this round in cooler weather given xmans testing with 2200 however even at 1 full grain less it's still in the node. Velocity. 2600,2650,2700. 29 gr aa2200120 gr sstaa22002.260Ssacci 41 it's obvious there is a node at the max end. 26.6,26.9,27.227.5 gr 2460 fps. No serious pressure signs but I believe it's about maxed out. Given the potential temp sensativity of 2200 this one may not stay in the node in really cold weather. However, most of my early morning hunting will be in the woods inside 100 yds as our deer don't come into the fields early am. Late evening the temp difference is probably only 20-30 degrees lower that testing temp. I also shot a ladder with 110 bthp and Benchmark. Results were not good. I was rushing to get done as I had a 2 hour drive and somewhere to be. Velocity topped out at 2450.
 

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Interesting on the 120 SSTs. I've loaded 26.9, 27.2, 27.5, 27.8 this morning. Will shoot out of 18" ARP.

Per folks on this forum, 27.2 and 27.5 yield the best results.
 

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Discussion Starter #3
From 27.2 to 27.5 the velocity pretty much topped out with the 120 sst. 2460 is what Hornady lists with a 16" barrel for the factory load. Accurate lists 2543 with a 20".
 

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Ladders work better at a longer distance, I use 200 or 300 yards depending on the caliber.
 

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Discussion Starter #5
Ladders work better at a longer distance, I use 200 or 300 yards depending on the caliber.
That's been my experience as well. However several members reported sucess doing 100 yd ladders so I thought I'd give it a try. I think given the platform it's not a bad idea if you are going to be using a bullet, powder combo for the first time and need to test pressure limits anyway.
 

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I think a lot of us 100 yds is we do not shoot any farther than that except special occasions. Where I mostly deer hunt max is 180 yds. A ex sniper I know when I first started reloading told me faster a lot of times is not as accurate. Find the perfect mix that works with your rifle. He also said that mix takes time to,find.
 
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