I posted here back in the early spring when I bought a 1871 Buffalo Classic in 45-70 - I have changed out the front Lyman Globe sight a couple of times trying different heights finally settle on the AHB model with medium aperture, I have the standard adjustable Williams Peep Sight at the back. With the Williams set as low as it will go I am getting 5 inch groups at 100 yards about 6 inches high. I am finding it difficult consistently adjust point of aim using the Lyman aperture to deal with the 6 inch high point of impact. I'm thinking I am going to switch out for one of the post options on my next visit to the range with the hope to tighten the grouping. Any thoughts or suggestions from the group?

Thanks, Retreever

oneatatime wrote on Jun 21^st, 2020 at 7:36pm:


Rounds I shot today were 405g RNFP coated bullets seated on a card wad over 43.5g of Triple 7 with Winchester LRM primer. Looking to shoot longer distance (200 to 600 yards) just using the 100 yards to get a feel for the rifle

You'll run out of rear sight adjustment long before you get to 600 yds. I had one of those also, and about 300-350 yds. is all the Williams is good for.

A aperture front will almost always give tighter groups, depending on how the aperture fits the target. But a post works if it's not too wide. I prefer no more than .050" wide post, and .040" is my favorite as distances get further out.

DocRock wrote on Jun 22^nd, 2020 at 1:02am:


Thanks Doc, I will try these suggestions and report back my results.

With 6" groups at 100yd you might want to slug your barrel and see if you are shooting the correct diameter bullet. The 405 is generally a good bullet out to around 3-400yd when tossed out with a MV of around 1250fps.

Also, if you can get one mounted, you will be far better off with some sort of tang sight on your tangless Buffalo Classic to 600yd. There are such things as 'spin in' pieces that screw into the wood and have a #8-24 or so thread in the center that allow for secure mounting of a tang-sight.

If the rear sight you are using at the moment is the one that came stock, then you might find a Hadley eye-cup a nice addition when you good with the limited elevation changes it offers.

I bought a Buffalo Classic in .45-70 when they first came out. Sights were not very good, and I had to change the front globe to a taller globe as it shot 6" high at 100 yds., even with rear sight adjusted all the way down!
I eventually wanted to shoot it farther, and I wanted a tang sight to do that. I set the buttstock up in my mill and cut a .5" wide "slot" in top dead center of the wrist, just behind the receiver. Then I built a brass insert to fit the slot and epoxied it into the slot. Drilled and tapped it to fit a Marlin 1.125" spaced vernier tang sight, and bolted it on. 
Changing to the vernier tang sight made a huge difference in accuracy, and ability to shoot it long range. I also wanted more weight as I felt the gun was too light. So I removed the buttplate, and poured the hole in the stock full of #9 bird shot. Full enough the buttplate just fit over it, and held the shot in place. That made a big difference in felt recoil, and balance. Much nicer to shoot with the extra weight.
Eventually a buddy wanted to get into an inexpensive single shot and I sold the BC to him. He still shoots it today, and loves it.

SSShooter wrote on Jun 28^th, 2020 at 1:57pm:


Yes, 0.458"