Thread: Hot Data?

Hodgdon data gives max loads - 60.4 gn max H1000 (2217) for 130 ABs, for 3000 fps. And 64.1 gn Retumbo for 3100 fps same pill

So had a jam today with the 130 Sierra Game Changers and 68 gr 2217 / H1000 shot a 25mm group (5 shots) no velocity data as there were two other users and the LabRadar was getting a bit confused.

That said, the POI was about 10mm higher than my 140 SST load at a chronographed 3050 fps, So I estimate they were cruising at 3100 ish.

Load was warm, so wouldn't go any higher than another grain.

Will load at 68 and chrony tomorrow before some long range goats and autopsies to see how these new bullets go.

Also picked up some RL33 (cheers for the jungle tip @Kiwi Greg) to try with the 140's.

Originally Posted by 300_BLK

So had a jam today with the 130 Sierra Game Changers and 68 gr 2217 / H1000 shot a 25mm group (5 shots) no velocity data as there were two other users and the LabRadar was getting a bit confused.

That said, the POI was about 10mm higher than my 140 SST load at a chronographed 3050 fps, So I estimate they were cruising at 3100 ish.

Load was warm, so wouldn't go any higher than another grain.

Will load at 68 and chrony tomorrow before some long range goats and autopsies to see how these new bullets go.

Also picked up some RL33 (cheers for the jungle tip @Kiwi Greg) to try with the 140's.

Change the frequency on your Labradar

3153 fps average, 130 grain Game Changers"

Originally Posted by Kiwi Greg

Change the frequency on your Labradar

To what setting? It's annoying when other shots set it off

Deadly

I my own guns I start medium powder charge and work up to near max or till I see pressure then back off a grain or two for long strings of fire on goats etc the barrels gets bloody way to hot to touch. On mates guns and I start lowest charge work up till I get best accuracy with a safe mid weight charge then they can shoot it however they like hard and fast dump a couple of magazines or just one shot for the trip. I say to them if want to go faster get a bigger gun. From using subs for hunting velocity isn’t everything, just dail the drop most guys do now days anyway and the animals won’t know the difference.

Had two mates reck the guns from pushing their charge weights to high, they were ok in the cold at sea level but a hot days high altitudes summer chamois hunts blew the bolts. I learned off that way over max charge weight and not my reloads ether.

Higher altitude wont increase pressure... hot days *might* increase pressure however it's been proven that extreme cold can also cause pressure spikes.