25 cal Barrel

remington jim said:
So I just received a Lone Peak RAZOR action and am having a 25 CM built . Heavy Sporter #6 Contour 22 “
Now what # groove would you prefer 4 or 5R or 6 🤷‍♂️ tell me which and why . Twist will be 1-7.5 inch

Try not to derail this topic and or turn it into a **** show please . Thxs RJ
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I too am having a custom 25 Creedmoor being built. I'm using a Browning X-bolt action from a Hunter Model in 308 Winchester.

The barrel will be a #2 KS Arms Stainless Fluted Barrel, cut to 20" in length.

I like the 5R rifling just because I've had great success with 5R rifling on TC firearms in the past. And I just like the term 5R...........:LOL:;)

Would the #4 or #6 groove really make a huge difference Jim in the 25's performance overall?..........:unsure:
 
I don't think the number of grooves matters at all in accuracy. A smith may have a preference as to dialing in the bore for chambering depending on his method.
 
I have a 25x47 on a 1x7 5-groove barrel. Lights out!!!

I was told that even-numbered grooves put more pressure on bullets than odd-numbered ones. This is because the odd-numbered grooves are not directly across from each other, unlike even-numbered grooves. I shot 4 and 5 on a 6mm barrel and couldn't tell the difference. But with all the 7.5 twist barrels I've shot, I will say the .5 makes up for my bad trigger pulls.
 
LJP said:
I was told that even-numbered grooves put more pressure on bullets than odd-numbered ones. This is because the odd-numbered grooves are not directly across from each other, unlike even-numbered grooves.
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I don't understand that theory... the pressure on a bullet is all from behind and once the bullet has travelled it's own length in the rifling it is fully engraved by the rifling.
 
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