Loading 10 Gauge Using 12 Gauge Data

[Mike of the Mountain]

While working with Tom Armbrust on developing loads for the 8g, he wants us to chronograph the test shells and they should be in the 1200 FPS range, give or take a reasonable bump or drop in velocity. Reasonable drop being 1160-1180 FPS, reasonable bump can be 1220-1240.

We made some loads with Longshot that sounded and felt good but the pressures were too low. Don't just rely on feel and sound.

[J.B. Books]

Originally Posted by Mike Koneski

While working with Tom Armbrust on developing loads for the 8g, he wants us to chronograph the test shells and they should be in the 1200 FPS range, give or take a reasonable bump or drop in velocity. Reasonable drop being 1160-1180 FPS, reasonable bump can be 1220-1240.

We made some loads with Longshot that sounded and felt good but the pressures were too low. Don't just rely on feel and sound.

Longshot can fool you because it's a very slow powder, its burning much of the way down the barrel, in low light you will often see more muzzle flash and it produces a louder boom. It's a great powder for pushing heavier hunting loads and keeping chamber pressure down,

[Ed Blake]

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This is a chart I snagged from an online edition of Shooting Times, written by Ross Seyfried. Don’t know the date

[6pt-Sika]

Originally Posted by Ed Blake

Attachment 125738


This is a chart I snagged from an online edition of Shooting Times, written by Ross Seyfried. Don’t know the date

Seyfried put the SR7625 1 1/4 ounce load I’ve used for years in Handloader magazine over thirty years ago .