Hello all, this is my first post. This will be my third full year of shooting FTR. Started with a Defiance Anti, Bartlein 27” 5r 1-11 twist light varmint, Obermeyer chambered by Larry Racine, with an AG composite stock. Shooting 155.5 Bergers and Juggernauts, with Lapua and Alpha LRP/SRP brass. Anywhere from 42.5-44.5 grains of Varget. Sat between .003”-.02” from the lands. Various kinds of primers. Always landed between 11-12SD. I had the original firing spring on there then swapped to 32lb because the original spring was giving me misfires. When I built this rifle I did not FTR in mind. I just wanted to build a cool gun that was accurate and felt unique.
This year I ran across a left handed Kelbly Panda in a KTS stock, getting chambered with a mansons FTR 2013 reamer, Brux 6 groove 32” heavy Palma barrel. Looking to shoot 185s and 200.20x, with N150 and would like to try set at the lands with 44.7 grains but will work up to it using SRP brass and BR4 primers. Side note, this rifle was owned by Mr. Dave Petzal from field and stream.
I’m also waiting on a BRM from Mr. Jim Borden and a stock from Mr. Dennis Ray.
I’ve been playing with GRT but the powder data is old and I’m not sure it’s taking into account the brass structure.
When I do mental math I’m seeing my SDs need to be tighter to reduce my vertical dispersion on heavier bullets due to the reduced velocity. I’m still learning about barrel harmonics and its vertical stringing response in relation to SD.
I also didn’t chase my lands, but when I read Tony Boyer book recently. It seems to want you to chase the lands… so I’m not sure what to do there. Best groups I ever got was .003 from the lands with 155.5 grain bullets and LT32 powder. Just couldn’t hold up over long strings over 20 firings with a slight dot here and there in occasional verticals when being fired to fast.
What powder, bullet, barrel, chamber, brass, primer, action, spring weight, combination are you using? What’s your CBTO or COAL?
It would be interesting to build a library for various data points of one type of competition.
This year I ran across a left handed Kelbly Panda in a KTS stock, getting chambered with a mansons FTR 2013 reamer, Brux 6 groove 32” heavy Palma barrel. Looking to shoot 185s and 200.20x, with N150 and would like to try set at the lands with 44.7 grains but will work up to it using SRP brass and BR4 primers. Side note, this rifle was owned by Mr. Dave Petzal from field and stream.
I’m also waiting on a BRM from Mr. Jim Borden and a stock from Mr. Dennis Ray.
I’ve been playing with GRT but the powder data is old and I’m not sure it’s taking into account the brass structure.
When I do mental math I’m seeing my SDs need to be tighter to reduce my vertical dispersion on heavier bullets due to the reduced velocity. I’m still learning about barrel harmonics and its vertical stringing response in relation to SD.
I also didn’t chase my lands, but when I read Tony Boyer book recently. It seems to want you to chase the lands… so I’m not sure what to do there. Best groups I ever got was .003 from the lands with 155.5 grain bullets and LT32 powder. Just couldn’t hold up over long strings over 20 firings with a slight dot here and there in occasional verticals when being fired to fast.
What powder, bullet, barrel, chamber, brass, primer, action, spring weight, combination are you using? What’s your CBTO or COAL?
It would be interesting to build a library for various data points of one type of competition.
