I bought this GP100 back in June, and it's been so blazing hot, I've only managed to make it to the range maybe 3 times this summer. The first time I took it, I only had a chance to fire one cylinder, (7 shots.) Mostly to see if it works. The second time, I was getting very elongated vertical groups. Even at 10 yards, the groups were about 18 inches from top to bottom. Isn't that called "stringing" I think I've heard that term before.
Anyway, today at the range, I had 3 or 4 different loads of 357. I usually try to make different loads to see what works best. It's very interesting to me, and also interesting to see how different guns like a specific load, etc. Today I had some loads with 2400 using small pistol primers. All according to the Alliant Loading Data, but this gun doesn't like light loads. For example when I tried 10.5 grains I had some "ok" groups, but shot about 3 inches high at 10 yards. Moving up to 11.5 grains tightened up the group considerably and moved it down to about an inch high at 10 yards. Same sight picture and standing shooting using two hands, single action. (All the loading data can be found on Alliant's website, so it isn't a hidden secret.)
I'm wondering what is the best distance for a 3 inch revolver? At 25 yards, I was on the paper, but that's not saying much, it was a big sheet. I guess I'm going to have to find the perfect load for this gun, then see how it performs at various distances.
Here's the gun in question.
Oh, and after this, I tried some 38 wadcutters, WOW! The weight of the gun makes them feel like 22's from a single six. And, the gun seemed to really like the 38's. What a pleasure to shoot.
Anyway, today at the range, I had 3 or 4 different loads of 357. I usually try to make different loads to see what works best. It's very interesting to me, and also interesting to see how different guns like a specific load, etc. Today I had some loads with 2400 using small pistol primers. All according to the Alliant Loading Data, but this gun doesn't like light loads. For example when I tried 10.5 grains I had some "ok" groups, but shot about 3 inches high at 10 yards. Moving up to 11.5 grains tightened up the group considerably and moved it down to about an inch high at 10 yards. Same sight picture and standing shooting using two hands, single action. (All the loading data can be found on Alliant's website, so it isn't a hidden secret.)
I'm wondering what is the best distance for a 3 inch revolver? At 25 yards, I was on the paper, but that's not saying much, it was a big sheet. I guess I'm going to have to find the perfect load for this gun, then see how it performs at various distances.
Here's the gun in question.
Oh, and after this, I tried some 38 wadcutters, WOW! The weight of the gun makes them feel like 22's from a single six. And, the gun seemed to really like the 38's. What a pleasure to shoot.