Been carrying FN HPs for policing/military, and now civilian since the early 1970's; don't know much about springs other than military pam info on springs. With your focus on recoil springs (which the military calls the main spring) and other springs, the military specifies a length for the gun plumbers to check during annual first line maintenance servicing: "Check the main spring (2) to ensure it is free of kinks; has a minimum free length of 101.85 millimetres (4.10 inches), and that the first coil grips the main spring guide assembly." And: "Inspect the firing pin spring to ensure that it is not broken, kinked or rusted. It shall have a minimum free length of 41.91 millimetres (1.650 inches). Replace defective firing pin springs;" A recoil spring shorter than that specified length or failing visual inspection is replaced. I am not aware of any military procedure/gauge used to check recoil spring performance other than the length measurement. Anyone purchasing any of your recoil springs can measure and note the length on arrival before installation, but do you have measurements for your springs which would tell the owner the recoil spring is due for replacement? Measurement of these springs with vernier calipers only takes a moment during routine cleaning.
Thanks for the video. I have a FN HP and would like to know which one the 17 or 18 pound progressive spring would be better for recoil control? I would be shooting standard ammo, not +P. The easier to rack is a plus. If a mainstream spring solution is better for recoil, I would prefer that instead of a progressive spring. Would you be kind letting me know your opinion. Thanks a lot.
Thanks for the question. First - the Recoil Spring and the Main Spring on the Hammer Strut are the spring resistances that control slide velocity in the Hi-Power. So, the information I'm providing to you about Recoil Spring choice assumes the current Main Spring has not been installed in the HP longer than 10 years. If it has been installed more than 10 years, my answers for you will be shots in the dark because there's not way for us to know how well and how much the old Main Spring is or isn't doing it's full part to help control recoil - so, this answer assumes that the Main Spring in the equation is BH's 26 lb, 30 lb, or 32 lb Main Spring. How far away from the shooting position the empty shell casings are landing is a good marker of slide velocity. Empty shell casings landing in the 4' - 9' range from the pistol, is important. Less than 4' is too close to "short cycling" if you encounter a weak round in the box - and ejection distances that get into double digits 10' and + is getting into the range where slide velocity will start degrading accuracy because the barrel unlocks before bullet has exited and it's creating an unnecessary fracture risk for both your Barrel Cam Lug and your Frame's Barrel Locking Lug Cam. Now, back to your question - assuming servicable Main Spring is installed: Any of our 17 lb Progressive, 17 lb Standard, and 18 lb Progressive Recoil Springs should result in ejection distances that are in that 4' - 9' range - and more than likely, all will result in ejection distance being in the 5' - 8' range which is even better. And, this also depends some on the flavor/brand of Standard Pressure Ammo you're using. Easist thing to do: Start with the 17 lb Progressive Spring - if you're happy with the ejection distance, stay with it, it will yield the easiest slide rack of the springs I mentioned. Moving up to the 17 lb Standard may reduce extraction distance by 1' - 1 1/2' and will add a little resistance to the slide rack. The 18 lb Progressive will likely pull that ejection distance down another 1'-ish but will remain approximately the same to rack as the 17 lb Standard. Our 15 lb Recoil Spring, in the FN HP Model, should only be used if you encounter some really "light-loaded" reloaded ammo. Our 18.5 lb Recoil Spring should ONLY ever be used with +P ammunition because it can induce short-cycling with standard pressure ammo. Don't hesistate to give us a call at 1-877-423-BHSS. Take care, Mark
@@bhspringsolutionsllc555 I really appreciate the detailed response, it helped me a lot! I will go ahead and order the 17lb progressive spring and see what the ejection distance it would be. I mostly use 115gr and 124gr Fiocchi, CCI blazers and similar. The mainspring is still stock and probably hasn't been changed in the gun. It is a 1935-1950 model. I've been wondering if I should replace the main hammer spring with a stock browning spring, they sell them completely installed (probably a 32 lb spring I'm assuming), or if I should get a lighter spring instead like either a 26 or a 30lb. I'd like to elevate its performance without compromising reliability which is more important to me. I'm also considering getting the 2-coil trigger return spring from BHSS as well because I removed the mag disconnect on it.
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Been carrying FN HPs for policing/military, and now civilian since the early 1970's; don't know much about springs other than military pam info on springs.
With your focus on recoil springs (which the military calls the main spring) and other springs, the military specifies a length for the gun plumbers to check during annual first line maintenance servicing:
"Check the main spring (2) to ensure it is free of kinks; has a minimum free length of 101.85 millimetres (4.10 inches), and that the first coil grips the main spring guide assembly."
And:
"Inspect the firing pin spring to ensure that it is not broken, kinked or rusted. It shall have a minimum free length of 41.91 millimetres (1.650 inches). Replace defective firing pin springs;"
A recoil spring shorter than that specified length or failing visual inspection is replaced. I am not aware of any military procedure/gauge used to check recoil spring performance other than the length measurement.
Anyone purchasing any of your recoil springs can measure and note the length on arrival before installation, but do you have measurements for your springs which would tell the owner the recoil spring is due for replacement? Measurement of these springs with vernier calipers only takes a moment during routine cleaning.
Mine just came in the mail, 17lbs and 18 lbs.
I hope that you make a Hi Power .40 S&W Progressive Recoil Spring VERY soon!
Thanks for the video. I have a FN HP and would like to know which one the 17 or 18 pound progressive spring would be better for recoil control? I would be shooting standard ammo, not +P. The easier to rack is a plus. If a mainstream spring solution is better for recoil, I would prefer that instead of a progressive spring. Would you be kind letting me know your opinion. Thanks a lot.
Thanks for the question. First - the Recoil Spring and the Main Spring on the Hammer Strut are the spring resistances that control slide velocity in the Hi-Power. So, the information I'm providing to you about Recoil Spring choice assumes the current Main Spring has not been installed in the HP longer than 10 years. If it has been installed more than 10 years, my answers for you will be shots in the dark because there's not way for us to know how well and how much the old Main Spring is or isn't doing it's full part to help control recoil - so, this answer assumes that the Main Spring in the equation is BH's 26 lb, 30 lb, or 32 lb Main Spring. How far away from the shooting position the empty shell casings are landing is a good marker of slide velocity. Empty shell casings landing in the 4' - 9' range from the pistol, is important. Less than 4' is too close to "short cycling" if you encounter a weak round in the box - and ejection distances that get into double digits 10' and + is getting into the range where slide velocity will start degrading accuracy because the barrel unlocks before bullet has exited and it's creating an unnecessary fracture risk for both your Barrel Cam Lug and your Frame's Barrel Locking Lug Cam. Now, back to your question - assuming servicable Main Spring is installed: Any of our 17 lb Progressive, 17 lb Standard, and 18 lb Progressive Recoil Springs should result in ejection distances that are in that 4' - 9' range - and more than likely, all will result in ejection distance being in the 5' - 8' range which is even better. And, this also depends some on the flavor/brand of Standard Pressure Ammo you're using. Easist thing to do: Start with the 17 lb Progressive Spring - if you're happy with the ejection distance, stay with it, it will yield the easiest slide rack of the springs I mentioned. Moving up to the 17 lb Standard may reduce extraction distance by 1' - 1 1/2' and will add a little resistance to the slide rack. The 18 lb Progressive will likely pull that ejection distance down another 1'-ish but will remain approximately the same to rack as the 17 lb Standard. Our 15 lb Recoil Spring, in the FN HP Model, should only be used if you encounter some really "light-loaded" reloaded ammo. Our 18.5 lb Recoil Spring should ONLY ever be used with +P ammunition because it can induce short-cycling with standard pressure ammo. Don't hesistate to give us a call at 1-877-423-BHSS. Take care, Mark
@@bhspringsolutionsllc555 I really appreciate the detailed response, it helped me a lot!
I will go ahead and order the 17lb progressive spring and see what the ejection distance it would be. I mostly use 115gr and 124gr Fiocchi, CCI blazers and similar.
The mainspring is still stock and probably hasn't been changed in the gun. It is a 1935-1950 model. I've been wondering if I should replace the main hammer spring with a stock browning spring, they sell them completely installed (probably a 32 lb spring I'm assuming), or if I should get a lighter spring instead like either a 26 or a 30lb. I'd like to elevate its performance without compromising reliability which is more important to me. I'm also considering getting the 2-coil trigger return spring from BHSS as well because I removed the mag disconnect on it.
not really BHP related, but I own a few CZ75s and I was wondering if you make steel baseplates for CZ mags?
日本語でお願い致します。