That would be sad because the more traditional 1/36" twist rate can't compete against ANY black If by NORMAL they mean traditional 19th century variation in twist rates, then I can't use Kirk's 1/22" 50 calĭefault twist rate for competition. I asked about twist because the NRA BPCR rules mention "normal variations in brass, primers, bore sizes, rifling styles, TWIST andĬhamber dimensions". I'm no 6'5" marine and my 12 lb Saddle rifle was quite challenging to hang onto with 700 grn bullets and 100 + grains of powder until I added a pistol grip. get the rifle as heavy as you are comfortable having it and make sure it has a pistol grip. As you already shoot a 50 x 3 1/4" you probably don't need to know any of this but. If its the bigger bullets at longer ranges you're after. The 1/36" will do it also but you may have to put more work into reading the conditions. Over the longer distances, for target work, especially in strong winds then I'd probably give the nod to the larger bullets as they have more mass and aren't quite as easy for the wind to move. If you want to shoot the longer and heavier 650-700+ bullets then you'd best run with the 1/22". You'll be putting up with less recoil, a lot less torque and still be having a lot of fun. You'll be able to shoot out to 1000 yds and more with a 1/36" twist, using traditional weight bullets in the 470 - 500 grn. Don't quote me on this though as its just my understanding. I'm not aware of all the rulings for Long Range but from what I've read and been advised along the way, restrictions usually apply to the cartridge/ chambering itself and not to the rifling of a particular barrel. The 50 x 2 1/2 would keep the velocity below the horrible wind drift that occurs above 1200 (worst is 1400) and the 3 1/4Ĭan't get a heavy bullet up to 1800 to start reducing wind drift. The faster twist is necessary to get the heavier, lower velocity loads to compete with the 45's heavier (higher BC) and slower = much less wind drift and drift variation in variable crosswinds. Is the default (non-traditional) 1/22" allowed in bplr matches? I have a Shiloh 50 x 3 1/4 with 1/36" twist - great for light weight higher velocity hunting loads but I would like to buy a Shiloh 50 x 2 1/2 for long range targets. If not, I think you'll be more than happy with a 1/36" and you won't be dealing with the level of torque that those bigger bullets can generate in a fast twist. If you're determined to shoot the longer, heavier 50 cal bullets that are in the 650-700 + grn category then there are benefits in the 1/22". They botwah work extremely well but if I was ordering a 50 x 2 1/2" again I'd probably go with the 1/36" and back off my bullet weight to a more traditional 470 - 500 grns.
I ordered my 50 x 2 1/2 with the 1/22" twist and I ordered a 50/70 Govt with the 1/36" twist. wrote:I'm sure Kirk will help with any enquiries but I believe the current, default Shiloh twist is 1/22".
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